#![deny(warnings)] extern crate swc_node_base; use ansi_term::Color; use anyhow::Error; use serde::Deserialize; use swc_common::{ comments::SingleThreadedComments, errors::{Handler, HANDLER}, sync::Lrc, FileName, Mark, SourceMap, }; use swc_ecma_ast::Module; use swc_ecma_codegen::{ text_writer::{omit_trailing_semi, JsWriter, WriteJs}, Emitter, }; use swc_ecma_minifier::{ optimize, option::{ terser::TerserCompressorOptions, CompressOptions, ExtraOptions, MangleOptions, MinifyOptions, }, }; use swc_ecma_parser::{parse_file_as_module, EsConfig, Syntax}; use swc_ecma_testing::{exec_node_js, JsExecOptions}; use swc_ecma_transforms_base::{fixer::fixer, hygiene::hygiene, resolver}; use swc_ecma_visit::{FoldWith, VisitMutWith}; use testing::DebugUsingDisplay; use tracing::{info, span, Level}; #[derive(Debug, Clone, Deserialize)] struct TestOptions { #[serde(default)] defaults: bool, } fn parse_compressor_config(cm: Lrc, s: &str) -> (bool, CompressOptions) { let opts: TestOptions = serde_json::from_str(s).expect("failed to deserialize value into a compressor config"); let mut c: TerserCompressorOptions = serde_json::from_str(s).expect("failed to deserialize value into a compressor config"); c.defaults = opts.defaults; (c.module, c.into_config(cm)) } fn stdout_of(code: &str) -> Result { let stdout = exec_node_js( code, JsExecOptions { cache: true, module: false, ..Default::default() }, )?; info!("Stdout: {}", stdout); Ok(stdout) } fn print( cm: Lrc, nodes: &[N], minify: bool, skip_semi: bool, ) -> String { let mut buf = vec![]; { let mut wr: Box = Box::new(JsWriter::new(cm.clone(), "\n", &mut buf, None)); if minify || skip_semi { wr = Box::new(omit_trailing_semi(wr)); } let mut emitter = Emitter { cfg: swc_ecma_codegen::Config { minify, ..Default::default() }, cm, comments: None, wr, }; for n in nodes { n.emit_with(&mut emitter).unwrap(); } } String::from_utf8(buf).unwrap() } fn run( cm: Lrc, handler: &Handler, input: &str, config: Option<&str>, mangle: Option, ) -> Option { let _ = rayon::ThreadPoolBuilder::new() .thread_name(|i| format!("rayon-{}", i + 1)) .build_global(); let compress_config = config.map(|config| parse_compressor_config(cm.clone(), config).1); let fm = cm.new_source_file(FileName::Anon, input.into()); let comments = SingleThreadedComments::default(); eprintln!("---- {} -----\n{}", Color::Green.paint("Input"), fm.src); let unresolved_mark = Mark::new(); let top_level_mark = Mark::new(); let program = parse_file_as_module( &fm, Syntax::Es(EsConfig { jsx: true, ..Default::default() }), Default::default(), Some(&comments), &mut vec![], ) .map_err(|err| { err.into_diagnostic(handler).emit(); }) .map(|module| module.fold_with(&mut resolver(unresolved_mark, top_level_mark, false))); // Ignore parser errors. // // This is typically related to strict mode caused by module context. let program = match program { Ok(v) => v, _ => return None, }; let run_hygiene = mangle.is_none(); let mut output = optimize( program.into(), cm, Some(&comments), None, &MinifyOptions { compress: compress_config, mangle, ..Default::default() }, &ExtraOptions { unresolved_mark, top_level_mark, }, ) .expect_module(); if run_hygiene { output.visit_mut_with(&mut hygiene()); } let output = output.fold_with(&mut fixer(None)); Some(output) } fn run_exec_test(input_src: &str, config: &str, skip_mangle: bool) { eprintln!("---- {} -----\n{}", Color::Green.paint("Config"), config); let expected_output = stdout_of(input_src).unwrap(); eprintln!( "---- {} -----\n{}", Color::Green.paint("Expected"), expected_output ); testing::run_test2(false, |cm, handler| { HANDLER.set(&handler, || { let _tracing = span!(Level::ERROR, "compress-only").entered(); let output = run(cm.clone(), &handler, input_src, Some(config), None); let output = output.expect("Parsing in base test should not fail"); let output = print(cm, &[output], false, false); eprintln!( "---- {} -----\n{}", Color::Green.paint("Optimized code"), output ); let actual_output = stdout_of(&output).expect("failed to execute the optimized code"); assert_ne!(actual_output, ""); assert_eq!( DebugUsingDisplay(&actual_output), DebugUsingDisplay(&expected_output) ); Ok(()) }) }) .unwrap(); if !skip_mangle { testing::run_test2(false, |cm, handler| { let _tracing = span!(Level::ERROR, "with-mangle").entered(); let output = run( cm.clone(), &handler, input_src, None, Some(MangleOptions { keep_fn_names: true, top_level: Some(true), ..Default::default() }), ); let output = output.expect("Parsing in base test should not fail"); let output = print(cm, &[&output], true, false); eprintln!( "---- {} -----\n{}", Color::Green.paint("Optimized code"), output ); let actual_output = stdout_of(&output).expect("failed to execute the optimized code"); assert_ne!(actual_output, ""); assert_eq!( DebugUsingDisplay(&actual_output), DebugUsingDisplay(&expected_output) ); Ok(()) }) .unwrap(); } } fn run_default_exec_test(input_src: &str) { let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(input_src, config, false); } #[test] fn next_feedback_1_capture_1() { let src = r###" const arr = []; const fns = []; var _loop = function (i) { fns.push(() => { arr.push(i); }) } for (var i = 0; i < 10; i++) _loop(i); fns.forEach(fn => fn()); console.log(arr);"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn conditionals_reduce_6() { let src = r###"function x() { } function y() { return "foo"; } console.log((y() || false) && x());"###; let config = r###"{ "booleans": true, "conditionals": true, "evaluate": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn conditionals_reduce_1() { let src = r###"function x() { } function y() { return "foo"; } console.log(x() && true && y());"###; let config = r###"{ "booleans": true, "conditionals": true, "evaluate": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn conditionals_reduce_4() { let src = r###"function x() { } function y() { return "foo"; } console.log(y() || false || x());"###; let config = r###"{ "booleans": true, "conditionals": true, "evaluate": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn conditionals_reduce_3() { let src = r###"function x() { } function y() { return "foo"; } console.log(x() || false || y());"###; let config = r###"{ "booleans": true, "conditionals": true, "evaluate": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn conditionals_reduce_2() { let src = r###"function x() { } function y() { return "foo"; } console.log(y() && true && x());"###; let config = r###"{ "booleans": true, "conditionals": true, "evaluate": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn conditionals_reduce_5() { let src = r###"function x() { } function y() { return "foo"; } console.log((x() || false) && y());"###; let config = r###"{ "booleans": true, "conditionals": true, "evaluate": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn vercel_001() { let src = r###"function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; } function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } function ItemsList() { var _ref; var _temp, _this, _ret; _classCallCheck(this, ItemsList); for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) { args[_key] = arguments[_key]; } return _ret = (_temp = (_this = _possibleConstructorReturn(this, (_ref = ItemsList.__proto__ || Object.getPrototypeOf(ItemsList)).call.apply(_ref, [this].concat(args))), _this), _this.storeHighlightedItemReference = function (highlightedItem) { _this.props.onHighlightedItemChange(highlightedItem === null ? null : highlightedItem.item); }, _temp), _possibleConstructorReturn(_this, _ret); } new ItemsList(); console.log('PASS')"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn vercel_002() { let src = r###"function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && ("object" == typeof call || "function" == typeof call) ? call : self; } function _inherits(subClass, superClass) { if ("function" != typeof superClass && null !== superClass) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } function ItemsList() { _classCallCheck(this, ItemsList); for (var _ref, _temp, _this, _ret, _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) { args[_key] = arguments[_key]; } return _ret = (_temp = (_this = _possibleConstructorReturn(this, (_ref = ItemsList.__proto__ || Object.getPrototypeOf(ItemsList)).call.apply(_ref, [ this ].concat(args))), _this), _this.storeHighlightedItemReference = function (highlightedItem) { _this.props.onHighlightedItemChange(null === highlightedItem ? null : highlightedItem.item); }, _temp), _possibleConstructorReturn(_this, _ret); } new ItemsList(); console.log("PASS");"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn regexp_1() { let src = r###" function compile(attributePattern, flags) { return new RegExp(`(?:^|;)\\s*${attributePattern}\\s*=\\s*` + `(` + `[^";\\s][^;\\s]*` + `|` + `"(?:[^"\\\\]|\\\\"?)+"?` + `)`, flags); } console.log(compile("foo", "g")); console.log(compile("bar", "g")); console.log(compile("baz", "g"));"###; let config = r###"{ "defaults": true }"###; run_exec_test(src, config, false); } #[test] fn update_object_1() { let src = r###"console.log(function () { console.log({ q: { p: 8 } }.q.p++); return 8; }());"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn update_object_3() { let src = r###"console.log(function () { var o = { p: 7 }; console.log([ o ][0].p++); return o.p; }());"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn update_object_2() { let src = r###"function inc() { this.p++; } console.log(function () { inc.call({ p: 6 }); console.log(6); return 6; }());"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn iife_reassign_1() { let src = r###"console.log(function c() { c = 6; return c; }())"###; let config = r###"{ "evaluate": true, "inline": true, "passes": 3, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn emotion_react_1() { let src = r###" /* harmony default export */ var emotion_memoize_browser_esm = (memoize); var hyphenateRegex = /[A-Z]|^ms/g; var animationRegex = /_EMO_([^_]+?)_([^]*?)_EMO_/g; var unitlessKeys = { animationIterationCount: 1, borderImageOutset: 1, borderImageSlice: 1, borderImageWidth: 1, boxFlex: 1, boxFlexGroup: 1, boxOrdinalGroup: 1, columnCount: 1, columns: 1, flex: 1, flexGrow: 1, flexPositive: 1, flexShrink: 1, flexNegative: 1, flexOrder: 1, gridRow: 1, gridRowEnd: 1, gridRowSpan: 1, gridRowStart: 1, gridColumn: 1, gridColumnEnd: 1, gridColumnSpan: 1, gridColumnStart: 1, msGridRow: 1, msGridRowSpan: 1, msGridColumn: 1, msGridColumnSpan: 1, fontWeight: 1, lineHeight: 1, opacity: 1, order: 1, orphans: 1, tabSize: 1, widows: 1, zIndex: 1, zoom: 1, WebkitLineClamp: 1, // SVG-related properties fillOpacity: 1, floodOpacity: 1, stopOpacity: 1, strokeDasharray: 1, strokeDashoffset: 1, strokeMiterlimit: 1, strokeOpacity: 1, strokeWidth: 1 }; var unitless_browser_esm = (unitlessKeys); var isCustomProperty = function isCustomProperty(property) { return property.charCodeAt(1) === 45; }; var labelPattern = /label:\s*([^\s;\n{]+)\s*(;|$)/g; var cursor; var hash_browser_esm = (murmur2); function handleInterpolation(mergedProps, registered, interpolation) { if (interpolation == null) { return ''; } if (interpolation.__emotion_styles !== undefined) { if (false) { } return interpolation; } switch (typeof interpolation) { case 'boolean': { return ''; } case 'object': { if (interpolation.anim === 1) { cursor = { name: interpolation.name, styles: interpolation.styles, next: cursor }; return interpolation.name; } if (interpolation.styles !== undefined) { var next = interpolation.next; if (next !== undefined) { // not the most efficient thing ever but this is a pretty rare case // and there will be very few iterations of this generally while (next !== undefined) { cursor = { name: next.name, styles: next.styles, next: cursor }; next = next.next; } } var styles = interpolation.styles + ";"; if (false) { } return styles; } return createStringFromObject(mergedProps, registered, interpolation); } case 'function': { if (mergedProps !== undefined) { var previousCursor = cursor; var result = interpolation(mergedProps); cursor = previousCursor; return handleInterpolation(mergedProps, registered, result); } else if (false) { } break; } case 'string': if (false) { var replaced, matched; } break; } // finalize string values (regular strings and functions interpolated into css calls) if (registered == null) { return interpolation; } var cached = registered[interpolation]; return cached !== undefined ? cached : interpolation; } function serializeStyles(args, registered, mergedProps) { if (args.length === 1 && typeof args[0] === 'object' && args[0] !== null && args[0].styles !== undefined) { return args[0]; } var stringMode = true; var styles = ''; cursor = undefined; var strings = args[0]; if (strings == null || strings.raw === undefined) { stringMode = false; console.log('stringMode = false') styles += handleInterpolation(mergedProps, registered, strings); } else { if (false) { } styles += strings[0]; } // we start at 1 since we've already handled the first arg console.log(`Styles: ${styles}`) for (var i = 1; i < args.length; i++) { styles += handleInterpolation(mergedProps, registered, args[i]); if (stringMode) { if (false) { } styles += strings[i]; } } console.log(`Styles: ${styles}`) var sourceMap; if (false) { } // using a global regex with .exec is stateful so lastIndex has to be reset each time labelPattern.lastIndex = 0; var identifierName = ''; var match; // https://esbench.com/bench/5b809c2cf2949800a0f61fb5 while ((match = labelPattern.exec(styles)) !== null) { identifierName += '-' + // $FlowFixMe we know it's not null match[1]; } console.log(`styles = ${styles}`) console.log(`identifierName = ${identifierName}`) var name = hash_browser_esm(styles) + identifierName; if (false) { } return { name: name, styles: styles, next: cursor }; } function createStringFromObject(mergedProps, registered, obj) { var string = ''; if (Array.isArray(obj)) { for (var i = 0; i < obj.length; i++) { string += handleInterpolation(mergedProps, registered, obj[i]) + ";"; } } else { for (var _key in obj) { var value = obj[_key]; if (typeof value !== 'object') { if (registered != null && registered[value] !== undefined) { string += _key + "{" + registered[value] + "}"; } else if (isProcessableValue(value)) { string += processStyleName(_key) + ":" + processStyleValue(_key, value) + ";"; } } else { if (_key === 'NO_COMPONENT_SELECTOR' && "production" !== 'production') { } if (Array.isArray(value) && typeof value[0] === 'string' && (registered == null || registered[value[0]] === undefined)) { for (var _i = 0; _i < value.length; _i++) { if (isProcessableValue(value[_i])) { string += processStyleName(_key) + ":" + processStyleValue(_key, value[_i]) + ";"; } } } else { var interpolated = handleInterpolation(mergedProps, registered, value); switch (_key) { case 'animation': case 'animationName': { string += processStyleName(_key) + ":" + interpolated + ";"; break; } default: { if (false) { } string += _key + "{" + interpolated + "}"; } } } } } } return string; } function murmur2(str) { // 'm' and 'r' are mixing constants generated offline. // They're not really 'magic', they just happen to work well. // const m = 0x5bd1e995; // const r = 24; // Initialize the hash var h = 0; // Mix 4 bytes at a time into the hash var k, i = 0, len = str.length; for (; len >= 4; ++i, len -= 4) { k = str.charCodeAt(i) & 0xff | (str.charCodeAt(++i) & 0xff) << 8 | (str.charCodeAt(++i) & 0xff) << 16 | (str.charCodeAt(++i) & 0xff) << 24; console.log(`K1: ${k}`); k = /* Math.imul(k, m): */ (k & 0xffff) * 0x5bd1e995 + ((k >>> 16) * 0xe995 << 16); console.log(`K2: ${k}`); k ^= /* k >>> r: */ k >>> 24; console.log(`K3: ${k}`); h = /* Math.imul(k, m): */ (k & 0xffff) * 0x5bd1e995 + ((k >>> 16) * 0xe995 << 16) ^ /* Math.imul(h, m): */ (h & 0xffff) * 0x5bd1e995 + ((h >>> 16) * 0xe995 << 16); console.log(`H: ${h}`); } // Handle the last few bytes of the input array switch (len) { case 3: h ^= (str.charCodeAt(i + 2) & 0xff) << 16; case 2: h ^= (str.charCodeAt(i + 1) & 0xff) << 8; case 1: h ^= str.charCodeAt(i) & 0xff; h = /* Math.imul(h, m): */ (h & 0xffff) * 0x5bd1e995 + ((h >>> 16) * 0xe995 << 16); } // Do a few final mixes of the hash to ensure the last few // bytes are well-incorporated. h ^= h >>> 13; h = /* Math.imul(h, m): */ (h & 0xffff) * 0x5bd1e995 + ((h >>> 16) * 0xe995 << 16); return ((h ^ h >>> 15) >>> 0).toString(36); } function isProcessableValue(value) { return value != null && typeof value !== 'boolean'; } var processStyleName = /* #__PURE__ */ emotion_memoize_browser_esm(function (styleName) { return isCustomProperty(styleName) ? styleName : styleName.replace(hyphenateRegex, '-$&').toLowerCase(); }); var processStyleValue = function processStyleValue(key, value) { switch (key) { case 'animation': case 'animationName': { if (typeof value === 'string') { return value.replace(animationRegex, function (match, p1, p2) { cursor = { name: p1, styles: p2, next: cursor }; return p1; }); } } } if (unitless_browser_esm[key] !== 1 && !isCustomProperty(key) && typeof value === 'number' && value !== 0) { return value + 'px'; } return value; }; function memoize(fn) { var cache = Object.create(null); return function (arg) { if (cache[arg] === undefined) cache[arg] = fn(arg); return cache[arg]; }; } console.log(serializeStyles(`:root { --background-color: rebeccapurple; }`)); console.log(serializeStyles(`:root { --background-color: rebeccapurple; }`)); console.log(serializeStyles(`:root { --background-color: rebeccapurple; }`)); console.log(serializeStyles(`:root { --background-color: rebeccapurple; }`)); console.log(serializeStyles(`:root { --background-color: rebeccapurple; }`)); console.log(serializeStyles(`:root { --background-color: rebeccapurple; }`));"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn simple_1() { let src = r###"console.log('PASS')"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1588_unsafe_undefined() { let src = r###"var a, c; console.log( (function (undefined) { return function () { if (a) return b; if (c) return d; }; })()() );"###; let config = r###"{ "conditionals": true, "if_return": true, "unsafe_undefined": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1588_safe_undefined() { let src = r###"var a, c; console.log( (function (undefined) { return function () { if (a) return b; if (c) return d; }; })(1)() );"###; let config = r###"{ "conditionals": true, "if_return": true, "unsafe": false }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_toplevel_retain() { let src = r###"var a, b = 1, c = g; function f(d) { return function () { c = 2; }; } a = 2; function g() {} function h() {} console.log((b = 3));"###; let config = r###"{ "top_retain": "f,a,o", "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_t161_top_retain_15() { let src = r###"class Alpha { num() { return x; } } class Beta { num() { return y; } } class Carrot { num() { return z; } } function f() { return x; } const g = () => y; const h = () => z; let x = 2, y = 3, z = 4; console.log( x, y, z, x * y, x * z, y * z, f(), g(), h(), new Alpha().num(), new Beta().num(), new Carrot().num() );"###; let config = r###"{ "defaults": true, "inline": 3, "passes": 2, "top_retain": "Alpha,z" }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_t161_top_retain_4() { let src = r###"function f() { return 2; } function g() { return 3; } console.log(f(), f(), g(), g());"###; let config = r###"{ "defaults": true, "inline": 3, "passes": 3, "top_retain": "f" }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_t161_top_retain_3() { let src = r###"function f() { return 2; } function g() { return 3; } console.log(f(), g());"###; let config = r###"{ "defaults": true, "inline": 3, "passes": 3, "top_retain": "f" }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_double_assign_1() { let src = r###"function f1() { var a = {}; var a = []; return a; } function f2() { var a = {}; a = []; return a; } function f3() { a = {}; var a = []; return a; } function f4(a) { a = {}; a = []; return a; } function f5(a) { var a = {}; a = []; return a; } function f6(a) { a = {}; var a = []; return a; } console.log(f1(), f2(), f3(), f4(), f5(), f6());"###; let config = r###"{ "passes": 2, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2846() { let src = r###"function f(a, b) { var a = 0; b && b(a); return a++; } var c = f(); console.log(c);"###; let config = r###"{ "collapse_vars": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2660_2() { let src = r###"var a = 1; function f(b) { b && f(); --a, a.toString(); } f(); console.log(a);"###; let config = r###"{ "collapse_vars": true, "reduce_vars": true, "sequences": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_toplevel_retain_array() { let src = r###"var a, b = 1, c = g; function f(d) { return function () { c = 2; }; } a = 2; function g() {} function h() {} console.log((b = 3));"###; let config = r###"{ "top_retain": ["f", "a", "o"], "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_chained_3() { let src = r###"console.log( (function (a, b) { var c = a, c = b; b++; return c; })(1, 2) );"###; let config = r###"{ "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2665() { let src = r###"var a = 1; function g() { a-- && g(); } typeof h == "function" && h(); function h() { typeof g == "function" && g(); } console.log(a);"###; let config = r###"{ "evaluate": true, "inline": true, "keep_fargs": false, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "typeofs": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2516_2() { let src = r###"function foo() { function qux(x) { bar.call(null, x); } function bar(x) { var FOUR = 4; var trouble = x || never_called(); var value = (FOUR - 1) * trouble; console.log(value == 6 ? "PASS" : value); } Baz = qux; } var Baz; foo(); Baz(2);"###; let config = r###"{ "collapse_vars": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_toplevel_funcs_retain() { let src = r###"var a, b = 1, c = g; function f(d) { return function () { c = 2; }; } a = 2; function g() {} function h() {} console.log((b = 3));"###; let config = r###"{ "top_retain": "f,a,o", "toplevel": "funcs", "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_1709() { let src = r###"console.log( (function x() { var x = 1; return x; })(), (function y() { const y = 2; return y; })(), (function z() { function z() {} return z; })() );"###; let config = r###"{ "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_var() { let src = r###"var a; console.log(a, b); var a = 1, b = 2; console.log(a, b); var a = 3; console.log(a, b);"###; let config = r###"{ "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_toplevel_funcs() { let src = r###"var a, b = 1, c = g; function f(d) { return function () { c = 2; }; } a = 2; function g() {} function h() {} console.log((b = 3));"###; let config = r###"{ "toplevel": "funcs", "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_delete_assign_1() { let src = r###"var a; console.log(delete (a = undefined)); console.log(delete (a = void 0)); console.log(delete (a = Infinity)); console.log(delete (a = 1 / 0)); console.log(delete (a = NaN)); console.log(delete (a = 0 / 0));"###; let config = r###"{ "booleans": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2226_3() { let src = r###"console.log( (function (a, b) { a += b; return a; })(1, 2) );"###; let config = r###"{ "collapse_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_drop_unused_issue_3146_3() { let src = r###"var g = "PASS"; (function (f) { var g = "FAIL"; f("console.log(g)", g[g]); })(function (a) { eval(a); });"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_drop_unused_issue_3146_4() { let src = r###"var g = "PASS"; (function (f) { var g = "FAIL"; f("console.log(g)", g[g]); })(function (a) { eval(a); });"###; let config = r###"{ "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_toplevel_vars_retain() { let src = r###"var a, b = 1, c = g; function f(d) { return function () { c = 2; }; } a = 2; function g() {} function h() {} console.log((b = 3));"###; let config = r###"{ "top_retain": "f,a,o", "toplevel": "vars", "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2226_2() { let src = r###"console.log( (function (a, b) { a += b; return a; })(1, 2) );"###; let config = r###"{ "collapse_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_fargs() { let src = r###"function f(a) { var b = a; } console.log(f())"###; let config = r###"{ "keep_fargs": false, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2136_3() { let src = r###"function f(x) { console.log(x); } !(function (a, ...b) { f(b[0]); })(1, 2, 3);"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": true, "passes": 3, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2660_1() { let src = r###"var a = 2; function f(b) { return (b && f()) || a--; } f(1); console.log(a);"###; let config = r###"{ "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_double_assign_2() { let src = r###"for (var i = 0; i < 2; i++) (a = void 0), (a = {}), console.log(a); var a;"###; let config = r###"{ "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2136_2() { let src = r###"function f(x) { console.log(x); } !(function (a, ...b) { f(b[0]); })(1, 2, 3);"###; let config = r###"{ "collapse_vars": true, "inline": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_t183() { let src = r###"function foo(val) { function bar(x) { if (x) return x; bar(x - 1); } return bar(val); } console.log(foo("PASS"));"###; let config = r###"{ "defaults": true, "top_retain": [] }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_toplevel_vars() { let src = r###"var a, b = 1, c = g; function f(d) { return function () { c = 2; }; } a = 2; function g() {} function h() {} console.log((b = 3));"###; let config = r###"{ "toplevel": "vars", "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_2516_1() { let src = r###"function foo() { function qux(x) { bar.call(null, x); } function bar(x) { var FOUR = 4; var trouble = x || never_called(); var value = (FOUR - 1) * trouble; console.log(value == 6 ? "PASS" : value); } Baz = qux; } var Baz; foo(); Baz(2);"###; let config = r###"{ "collapse_vars": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_defun_lambda_same_name() { let src = r###"function f(n) { return n ? n * f(n - 1) : 1; } console.log( (function f(n) { return n ? n * f(n - 1) : 1; })(5) );"###; let config = r###"{ "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_toplevel_vars_fargs() { let src = r###"var a, b = 1, c = g; function f(d) { return function () { c = 2; }; } a = 2; function g() {} function h() {} console.log((b = 3));"###; let config = r###"{ "keep_fargs": false, "toplevel": "vars", "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_1968() { let src = r###"function f(c) { var a; if (c) { let b; return (a = 2) + (b = 3); } } console.log(f(1));"###; let config = r###"{ "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_1715_4() { let src = r###"var a = 1; !(function a() { a++; try { x(); } catch (a) { var a; } })(); console.log(a);"###; let config = r###"{ "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_assign() { let src = r###"function f1() { var a; a = 1; } function f2() { var a = 1; a = 2; } function f3(a) { a = 1; } function f4() { var a; return (a = 1); } function f5() { var a; return function () { a = 1; }; } console.log(f1()) console.log(f2()) console.log(f3()) console.log(f4()) console.log(f5())"###; let config = r###"{ "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_issue_3146_1() { let src = r###"(function (f) { f("g()"); })(function (a) { eval(a); function g(b) { if (!b) b = "PASS"; console.log(b); } });"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_delete_assign_2() { let src = r###"var a; console.log(delete (a = undefined)); console.log(delete (a = void 0)); console.log(delete (a = Infinity)); console.log(delete (a = 1 / 0)); console.log(delete (a = NaN)); console.log(delete (a = 0 / 0));"###; let config = r###"{ "booleans": true, "keep_infinity": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_drop_unused_drop_toplevel_all_retain() { let src = r###"var a, b = 1, c = g; function f(d) { return function () { c = 2; }; } a = 2; function g() {} function h() {} console.log((b = 3));"###; let config = r###"{ "top_retain": "f,a,o", "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_comparing_issue_2857_6() { let src = r###"function f(a) { if ({}.b === undefined || {}.b === null) return a.b !== undefined && a.b !== null; } console.log( f({ a: [null], get b() { return this.a.shift(); }, }) );"###; let config = r###"{ "comparisons": true, "pure_getters": "strict", "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_pure_getters_impure_getter_2() { let src = r###"({ get a() { console.log(1); }, b: 1, }.a); ({ get a() { console.log(1); }, b: 1, }.b);"###; let config = r###"{ "pure_getters": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_pure_getters_issue_2838() { let src = r###"function f(a, b) { (a || b).c = "PASS"; (function () { return f(a, b); }.prototype.foo = "bar"); } var o = {}; f(null, o); console.log(o.c);"###; let config = r###"{ "pure_getters": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_pure_getters_issue_2938_4() { let src = r###"var Parser = function Parser() {}; var p = Parser.prototype; var unused = p.x; p.initialContext = function initialContext() { p.y; console.log("PASS"); }; p.braceIsBlock = function () {}; new Parser().initialContext();"###; let config = r###"{ "pure_getters": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_pure_getters_set_mutable_1() { let src = r###"!(function a() { a.foo += ""; if (a.foo) console.log("PASS"); else console.log("FAIL"); })();"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "pure_getters": "strict", "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_pure_getters_issue_2938_3() { let src = r###"function f(a) { var unused = a.a; a.b = "PASS"; a.c; } var o = {}; o.d; f(o); console.log(o.b);"###; let config = r###"{ "pure_getters": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_pure_getters_set_immutable_6() { let src = r###"var a = 1; a.foo += ""; if (a.foo) console.log("FAIL"); else console.log("PASS");"###; let config = r###"{ "collapse_vars": true, "conditionals": true, "evaluate": true, "pure_getters": "strict", "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_pure_getters_set_immutable_1() { let src = r###"var a = 1; a.foo += ""; if (a.foo) console.log("FAIL"); else console.log("PASS");"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "pure_getters": "strict", "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_pure_getters_set_mutable_2() { let src = r###"!(function a() { a.foo += ""; if (a.foo) console.log("PASS"); else console.log("FAIL"); })();"###; let config = r###"{ "collapse_vars": true, "conditionals": true, "pure_getters": "strict", "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_dead_code_issue_2860_1() { let src = r###"console.log( (function (a) { return (a ^= 1); })() );"###; let config = r###"{ "dead_code": true, "evaluate": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_dead_code_global_fns() { let src = r###"Boolean(1, 2); decodeURI(1, 2); decodeURIComponent(1, 2); Date(1, 2); encodeURI(1, 2); encodeURIComponent(1, 2); Error(1, 2); escape(1, 2); EvalError(1, 2); isFinite(1, 2); isNaN(1, 2); Number(1, 2); Object(1, 2); parseFloat(1, 2); parseInt(1, 2); RangeError(1, 2); ReferenceError(1, 2); String(1, 2); SyntaxError(1, 2); TypeError(1, 2); unescape(1, 2); URIError(1, 2); try { Function(1, 2); } catch (e) { console.log(e.name); } try { RegExp(1, 2); } catch (e) { console.log(e.name); } try { Array(NaN); } catch (e) { console.log(e.name); }"###; let config = r###"{ "side_effects": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_block_scope_issue_334() { let src = r###"(function (A) { (function () { doPrint(); })(); function doPrint() { print(A); } })("Hello World!"); function print(A) { if (!A.x) { console.log(A); } }"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_issue_3021() { let src = r###"var a = 1, b = 2; (function () { b = a; if (a++ + b--) return 1; return; var b = {}; })(); console.log(a, b);"###; let config = r###"{ "hoist_props": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_contains_this_2() { let src = r###"var o = { u: function () { return this === this; }, p: 1, }; console.log(o.p, o.p, o.u);"###; let config = r###"{ "evaluate": true, "hoist_props": true, "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_hoist_props_issue_851_hoist_to_conflicting_name() { let src = r###"const BBB = { CCC: "PASS" }; if (id(true)) { const BBB_CCC = BBB.CCC; console.log(BBB_CCC); }"###; let config = r###"{ "hoist_props": true, "reduce_vars": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_name_collision_1() { let src = r###"var obj_foo = 1; var obj_bar = 2; function f() { var obj = { foo: 3, bar: 4, "b-r": 5, "b+r": 6, "b!r": 7 }; console.log(obj_foo, obj.foo, obj.bar, obj["b-r"], obj["b+r"], obj["b!r"]); } f();"###; let config = r###"{ "hoist_props": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_new_this() { let src = r###"var o = { a: 1, b: 2, f: function (a) { this.b = a; }, }; console.log(new o.f(o.a).b, o.b);"###; let config = r###"{ "evaluate": true, "hoist_props": true, "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_toplevel_let() { let src = r###"let a = { b: 1, c: 2 }; console.log(a.b + a.c);"###; let config = r###"{ "hoist_props": true, "reduce_vars": true, "toplevel": false }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_undefined_key() { let src = r###"var a, o = {}; o[a] = 1; o.b = 2; console.log(o[a] + o.b);"###; let config = r###"{ "evaluate": true, "hoist_props": true, "join_vars": true, "passes": 4, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_direct_access_1() { let src = r###"var a = 0; var obj = { a: 1, b: 2 }; for (var k in obj) a++; console.log(a, obj.a);"###; let config = r###"{ "hoist_props": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_issue_2473_3() { let src = r###"var o = { a: 1, b: 2 }; console.log(o.a, o.b);"###; let config = r###"{ "hoist_props": true, "reduce_vars": true, "top_retain": "o", "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_issue_2473_4() { let src = r###"(function () { var o = { a: 1, b: 2 }; console.log(o.a, o.b); })();"###; let config = r###"{ "hoist_props": true, "reduce_vars": true, "top_retain": "o", "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_toplevel_const() { let src = r###"const a = { b: 1, c: 2 }; console.log(a.b + a.c);"###; let config = r###"{ "hoist_props": true, "reduce_vars": true, "toplevel": false }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_issue_2377_3() { let src = r###"var obj = { foo: 1, bar: 2, square: function (x) { return x * x; }, cube: function (x) { return x * x * x; }, }; console.log(obj.foo, obj.cube(3));"###; let config = r###"{ "evaluate": true, "hoist_props": true, "inline": true, "passes": 4, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_issue_2508_2() { let src = r###"var o = { a: { b: 2 }, f: function (x) { console.log(x); }, }; o.f(o.a);"###; let config = r###"{ "collapse_vars": true, "hoist_props": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore = "Function anonymous"] fn terser_hoist_props_issue_2508_5() { let src = r###"var o = { f: function (x) { console.log(x); }, }; o.f(o.f);"###; let config = r###"{ "collapse_vars": true, "hoist_props": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_issue_2377_2() { let src = r###"var obj = { foo: 1, bar: 2, square: function (x) { return x * x; }, cube: function (x) { return x * x * x; }, }; console.log(obj.foo, obj.cube(3));"###; let config = r###"{ "evaluate": true, "hoist_props": true, "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_toplevel_var() { let src = r###"var a = { b: 1, c: 2 }; console.log(a.b + a.c);"###; let config = r###"{ "hoist_props": true, "reduce_vars": true, "toplevel": false }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_issue_3046() { let src = r###"console.log( (function (a) { do { var b = { c: a++ }; } while (b.c && a); return a; })(0) );"###; let config = r###"{ "hoist_props": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_name_collision_3() { let src = r###"var o = { p: 1, "+": function (x) { return x; }, "-": function (x) { return x + 1; }, }, o__$0 = 2, o__$1 = 3; console.log(o.p === o.p, o["+"](4), o["-"](5));"###; let config = r###"{ "hoist_props": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_hoist_class_with_new() { let src = r###"var o = { p: class Foo { constructor(value) { this.value = value * 10; } }, x: 1, y: 2, }; console.log(o.p.name, o.p === o.p, new o.p(o.x).value, new o.p(o.y).value);"###; let config = r###"{ "comparisons": true, "evaluate": true, "hoist_props": true, "inline": true, "keep_classnames": true, "keep_fnames": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, true); } #[test] fn terser_hoist_props_hoist_function_with_call() { let src = r###"var o = { p: function Foo(value) { return 10 * value; }, x: 1, y: 2, }; console.log(o.p.name, o.p === o.p, o.p(o.x), o.p(o.y));"###; let config = r###"{ "comparisons": true, "evaluate": true, "hoist_props": true, "inline": true, "keep_fnames": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_name_collision_2() { let src = r###"var o = { p: 1, "+": function (x) { return x; }, "-": function (x) { return x + 1; }, }, o__$0 = 2, o__$1 = 3; console.log(o.p === o.p, o["+"](4), o["-"](5), o__$0, o__$1);"###; let config = r###"{ "hoist_props": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_direct_access_2() { let src = r###"var o = { a: 1 }; var f = function (k) { if (o[k]) return "PASS"; }; console.log(f("a"));"###; let config = r###"{ "hoist_props": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_hoist_class() { let src = r###"function run(c, v) { return new c(v).value; } var o = { p: class Foo { constructor(value) { this.value = value * 10; } }, x: 1, y: 2, }; console.log(o.p.name, o.p === o.p, run(o.p, o.x), run(o.p, o.y));"###; let config = r###"{ "comparisons": true, "evaluate": true, "hoist_props": true, "inline": true, "keep_classnames": true, "keep_fnames": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, true); } #[test] fn terser_hoist_props_issue_2519() { let src = r###"function testFunc() { var dimensions = { minX: 5, maxX: 6 }; var scale = 1; var d = { x: (dimensions.maxX + dimensions.minX) / 2 }; return d.x * scale; } console.log(testFunc());"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "hoist_props": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_issue_2377_1() { let src = r###"var obj = { foo: 1, bar: 2, square: function (x) { return x * x; }, cube: function (x) { return x * x * x; }, }; console.log(obj.foo, obj.cube(3));"###; let config = r###"{ "evaluate": true, "hoist_props": true, "inline": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore = "Function anoymous"] fn terser_hoist_props_issue_2508_6() { let src = r###"var o = { f: (x) => { console.log(x); }, }; o.f(o.f);"###; let config = r###"{ "collapse_vars": true, "hoist_props": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_hoist_props_issue_2508_1() { let src = r###"var o = { a: [1], f: function (x) { console.log(x); }, }; o.f(o.a);"###; let config = r###"{ "collapse_vars": true, "hoist_props": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_identity_inline_identity_extra_params() { let src = r###"const id = (x) => x; console.log(id(1, console.log(2)), id(3, 4));"###; let config = r###"{ "inline": true, "reduce_vars": true, "unused": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_identity_inline_identity_function() { let src = r###"function id(x) { return x; } console.log(id(1), id(2));"###; let config = r###"{ "inline": true, "reduce_vars": true, "unused": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_identity_inline_identity_duplicate_arg_var() { let src = r###"const id = (x) => { return x; var x; }; console.log(id(1), id(2));"###; let config = r###"{ "inline": true, "reduce_vars": true, "unused": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_template_string_regex_2() { let src = r###"console.log(`${/a/} ${6 / 2} ${/b/.test("b")} ${1 ? /c/ : /d/}`);"###; let config = r###"{ "evaluate": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_template_string_evaluate_nested_templates() { let src = r###"/*#__NOINLINE__*/ const any = 'any string, but should not be inlined'; var foo = `${`${`${`foo`}`}`}`; var bar = `before ${`innerBefore ${any} innerAfter`} after`; var baz = `1 ${2 + `3 ${any} 4` + 5} 6`; console.log(foo); console.log(bar); console.log(baz);"###; let config = r###"{ "evaluate": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_destructuring_assign_of_computed_key() { let src = r###"let x; let four = 4; ({ [5 + 2 - four]: x } = { [1 + 2]: 42 }); console.log(x);"###; let config = r###"{ "evaluate": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_unused_destructuring_getter_side_effect_2() { let src = r###"function extract(obj) { const { a: a, b: b } = obj; console.log(b); } extract({ a: 1, b: 2 }); extract({ get a() { var s = "side effect"; console.log(s); return s; }, b: 4, });"###; let config = r###"{ "pure_getters": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_mangle_destructuring_decl_array() { let src = r###"var [, t, e, n, s, o = 2, r = [1 + 2]] = [9, 8, 7, 6]; console.log(t, e, n, s, o, r);"###; let config = r###"{ "evaluate": true, "unused": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_issue_3205_4() { let src = r###"(function () { function f(o) { var { a: x } = o; console.log(x); } f({ a: "PASS" }); })();"###; let config = r###"{ "inline": 3, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_issue_3205_3() { let src = r###"(function () { function f(o, { a: x } = o) { console.log(x); } f({ a: "PASS" }); })();"###; let config = r###"{ "inline": 3, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_unused_destructuring_multipass() { let src = r###"let { w: w, x: y, z: z } = { x: 1, y: 2, z: 3 }; console.log(y); if (0) { console.log(z); }"###; let config = r###"{ "conditionals": true, "evaluate": true, "toplevel": true, "passes": 2, "pure_getters": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_arrow_func_with_destructuring_args() { let src = r###"(({ foo: foo = 1 + 0, bar: bar = 2 }, [car = 3, far = 4]) => { console.log(foo, bar, car, far); })({ bar: 5 - 0 }, [, 6]);"###; let config = r###"{ "evaluate": true, "unused": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_issue_3205_2() { let src = r###"(function () { function f() { var o = { a: "PASS" }, { a: x } = o; console.log(x); } f(); })();"###; let config = r###"{ "inline": 3, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_empty_object_destructuring_3() { let src = r###"var {} = Object; let { L: L } = Object, L2 = "foo"; const bar = "bar", { prop: C1, C2: C2 = console.log("side effect"), C3: C3 } = Object;"###; let config = r###"{ "pure_getters": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_empty_object_destructuring_4() { let src = r###"var {} = Object; let { L: L } = Object, L2 = "foo"; const bar = "bar", { prop: C1, C2: C2 = console.log("side effect"), C3: C3 } = Object;"###; let config = r###"{ "pure_getters": true, "toplevel": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_issue_3205_5() { let src = r###"(function () { function f(g) { var o = g, { a: x } = o; console.log(x); } f({ a: "PASS" }); })();"###; let config = r###"{ "inline": 3, "passes": 4, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_unused_destructuring_decl_1() { let src = r###"let { x: L, y: y } = { x: 2 }; var { U: u, V: V } = { V: 3 }; const { C: C, D: D } = { C: 1, D: 4 }; console.log(L, V);"###; let config = r###"{ "pure_getters": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_mangle_destructuring_decl() { let src = r###"function test(opts) { let a = opts.a || { e: 7, n: 8 }; let { t: t, e: e, n: n, s: s = 5 + 4, o: o, r: r } = a; console.log(t, e, n, s, o, r); } test({ a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 } }); test({});"###; let config = r###"{ "evaluate": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_unused_destructuring_arrow_param() { let src = r###"let bar = ({ w: w = console.log("side effect"), x: x, y: z }) => { console.log(x); }; bar({ x: 4, y: 5, z: 6 });"###; let config = r###"{ "pure_getters": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_anon_func_with_destructuring_args() { let src = r###"(function ({ foo: foo = 1 + 0, bar: bar = 2 }, [car = 3, far = 4]) { console.log(foo, bar, car, far); })({ bar: 5 - 0 }, [, 6]);"###; let config = r###"{ "evaluate": true, "unused": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_mangle_destructuring_assign_toplevel_true() { let src = r###"function test(opts) { let s, o, r; let a = opts.a || { e: 7, n: 8 }; ({ t, e, n, s = 5 + 4, o, r } = a); console.log(t, e, n, s, o, r); } let t, e, n; test({ a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 } }); test({});"###; let config = r###"{ "toplevel": true, "evaluate": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_mangle_destructuring_decl_collapse_vars() { let src = r###"function test(opts) { let a = opts.a || { e: 7, n: 8 }; let { t: t, e: e, n: n, s: s = 5 + 4, o: o, r: r } = a; console.log(t, e, n, s, o, r); } test({ a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 } }); test({});"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_unused_destructuring_decl_5() { let src = r###"const { a: a, b: c, d: d = new Object(1) } = { b: 7 }; let { e: e, f: g, h: h = new Object(2) } = { e: 8 }; var { w: w, x: y, z: z = new Object(3) } = { w: 4, x: 5, y: 6 }; console.log(c, e, z + 0);"###; let config = r###"{ "pure_getters": true, "toplevel": true, "top_retain": ["a", "e", "w"], "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_destructuring_mangle_destructuring_assign_toplevel_false() { let src = r###"function test(opts) { let s, o, r; let a = opts.a || { e: 7, n: 8 }; ({ t, e, n, s = 9, o, r } = a); console.log(t, e, n, s, o, r); } let t, e, n; test({ a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 } }); test({});"###; let config = r###"{ "toplevel": false, "evaluate": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arrow_issue_2105_2() { let src = r###"((factory) => { factory(); })(() => ((fn) => { fn()().prop(); })(() => { let bar = () => { var quux = () => { console.log("PASS"); }, foo = () => { console.log; quux(); }; return { prop: foo }; }; return bar; }) );"###; let config = r###"{ "collapse_vars": true, "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arrow_issue_2105_1() { let src = r###"!(function (factory) { factory(); })(function () { return (function (fn) { fn()().prop(); })(function () { function bar() { var quux = function () { console.log("PASS"); }, foo = function () { console.log; quux(); }; return { prop: foo }; } return bar; }); });"###; let config = r###"{ "unsafe_arrows": true, "collapse_vars": true, "ecma": 2015, "inline": true, "passes": 3, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "unsafe_methods": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arrow_issue_2084() { let src = r###"var c = 0; !(function () { !(function (c) { c = 1 + c; var c = 0; function f14(a_1) { if (((c = 1 + c), 0 !== (23).toString())) (c = 1 + c), a_1 && (a_1[0] = 0); } f14(); })(-1); })(); console.log(c);"###; let config = r###"{ "unsafe_arrows": true, "collapse_vars": true, "conditionals": true, "ecma": 2015, "evaluate": true, "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_t120_issue_t120_4() { let src = r###"for ( var x = 1, t = (o) => { var i = +o; return console.log(i + i) && 0; }; x--; t(2) );"###; let config = r###"{ "defaults": true, "inline": 3, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_t120_issue_t120_5() { let src = r###"for ( var x = 1, t = (o) => { var i = +o; return console.log(i + i) && 0; }; x--; ) t(3);"###; let config = r###"{ "defaults": true, "inline": 3, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_class_properties_mangle_keep_quoted() { let src = r###"class Foo { bar = "bar"; static zzz = "zzz"; toString() { return this.bar + Foo.zzz; } } console.log(new Foo().toString())"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_class_properties_static_means_execution() { let src = r###"let x = 0; class NoProps {} class WithProps { prop = (x = x === 1 ? "PASS" : "FAIL"); } class WithStaticProps { static prop = (x = x === 0 ? 1 : "FAIL"); } new NoProps(); new WithProps(); new WithStaticProps(); console.log(x);"###; let config = r###"{ "toplevel": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1447_conditional_false_stray_else_in_loop() { let src = r###"for (var i = 1; i <= 4; ++i) { if (i <= 2) continue; console.log(i); }"###; let config = r###"{ "booleans": true, "comparisons": true, "conditionals": false, "dead_code": true, "evaluate": true, "hoist_vars": true, "if_return": true, "join_vars": true, "loops": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_object_spread_unsafe() { let src = r###"var o1 = { x: 1, y: 2 }; var o2 = { x: 3, z: 4 }; var cloned = { ...o1 }; var merged = { ...o1, ...o2 }; console.log(cloned, merged);"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "join_vars": true, "passes": 3, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2794_4() { let src = r###"for (var x of ([1, 2], [3, 4])) { console.log(x); }"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2794_3() { let src = r###"function foo() { for (const a of func(value)) { console.log(a); } function func(va) { return doSomething(va); } } function doSomething(x) { return [x, 2 * x, 3 * x]; } const value = 10; foo();"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": 3, "passes": 3, "properties": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_array_spread_of_sequence() { let src = r###"var a = [1]; console.log([...(a, a)]); console.log([...a, a]); console.log([...(a || a)]); console.log([...(a || a)]);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2794_2() { let src = r###"function foo() { for (const a of func(value)) { console.log(a); } function func(va) { return doSomething(va); } } function doSomething(x) { return [x, 2 * x, 3 * x]; } const value = 10; foo();"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": true, "passes": 1, "properties": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": false, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2874_1() { let src = r###"(function () { function foo() { let letters = ["A", "B", "C"]; let result = [2, 1, 0].map((key) => bar(letters[key] + key)); return result; } function bar(value) { return () => console.log(value); } foo().map((fn) => fn()); })();"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": 3, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2762() { let src = r###"var bar = 1, T = true; (function () { if (T) { const a = function () { var foo = bar; console.log(foo, a.prop, b.prop); }; a.prop = 2; const b = { prop: 3 }; a(); } })();"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_1898() { let src = r###"class Foo { bar() { for (const x of [6, 5]) { for (let y of [4, 3]) { for (var z of [2, 1]) { console.log(x, y, z); } } } } } new Foo().bar();"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2794_6() { let src = r###"for (let e of ([1, 2], [3, 4, 5])) { console.log(e); }"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2794_1() { let src = r###"function foo() { for (const a of func(value)) { console.log(a); } function func(va) { return doSomething(va); } } function doSomething(x) { return [x, 2 * x, 3 * x]; } const value = 10; foo();"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": true, "passes": 1, "properties": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": false, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2874_2() { let src = r###"(function () { let keys = []; function foo() { var result = [2, 1, 0].map((value) => { keys.push(value); return bar(); }); return result; } function bar() { var letters = ["A", "B", "C"], key = keys.shift(); return () => console.log(letters[key] + key); } foo().map((fn) => fn()); })();"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": 3, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_t80() { let src = r###"function foo(data = []) { var u, v = "unused"; if (arguments.length == 1) { data = [data]; } return data; } console.log(JSON.stringify([foo(), foo(null), foo(5, 6)]));"###; let config = r###"{ "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2349() { let src = r###"function foo(boo, key) { const value = boo.get(); return value.map(({ [key]: bar }) => bar); } console.log(foo({ get: () => [{ blah: 42 }] }, "blah"));"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2874_3() { let src = r###"function f() { return x + y; } let x, y; let a = (z) => { x = "A"; y = z; console.log(f()); }; a(1); a(2);"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": 3, "reduce_funcs": false, "reduce_vars": true, "sequences": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_harmony_issue_2349b() { let src = r###"function foo(boo, key) { const value = boo.get(); return value.map(function ({ [key]: bar }) { return bar; }); } console.log( foo( { get: function () { return [{ blah: 42 }]; }, }, "blah" ) );"###; let config = r###"{ "arrows": true, "collapse_vars": true, "ecma": 2015, "evaluate": true, "inline": true, "passes": 3, "properties": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "side_effects": true, "unsafe_arrows": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1275_string_plus_optimization() { let src = r###"function foo(anything) { function throwing_function() { throw "nope"; } try { console.log("0" + throwing_function() ? "yes" : "no"); } catch (ex) { console.log(ex); } console.log("0" + anything ? "yes" : "no"); console.log(anything + "0" ? "Yes" : "No"); console.log("" + anything); console.log(anything + ""); } foo();"###; let config = r###"{ "booleans": true, "comparisons": true, "conditionals": true, "dead_code": true, "evaluate": true, "hoist_funs": true, "if_return": true, "join_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_async_async_inline() { let src = r###"(async function () { return await 3; })(); (async function (x) { await console.log(x); })(4); function invoke(x, y) { return x(y); } invoke(async function () { return await 1; }); invoke(async function (x) { await console.log(x); }, 2); function top() { console.log("top"); } top(); async function async_top() { console.log("async_top"); } async_top();"###; let config = r###"{ "collapse_vars": true, "conditionals": true, "evaluate": true, "inline": true, "negate_iife": true, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_logical_assignments_assign_in_conditional_part() { let src = r###"var status = "PASS"; var nil = null; var nil_prop = { prop: null }; nil &&= console.log((status = "FAIL")); nil_prop.prop &&= console.log((status = "FAIL")); console.log(status);"###; let config = r###"{ "toplevel": true, "evaluate": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_logical_assignments_assignment_in_left_part() { let src = r###"var status = "FAIL"; var x = {}; x[(status = "PASS")] ||= 1; console.log(status);"###; let config = r###"{ "toplevel": true, "evaluate": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_labels_labels_4() { let src = r###"out: for (var i = 0; i < 5; ++i) { if (i < 3) continue out; console.log(i); }"###; let config = r###"{ "conditionals": true, "dead_code": true, "if_return": true }"###; run_exec_test(src, config, false); } #[test] fn terser_labels_labels_3() { let src = r###"for (var i = 0; i < 5; ++i) { if (i < 3) continue; console.log(i); }"###; let config = r###"{ "conditionals": true, "dead_code": true, "if_return": true }"###; run_exec_test(src, config, false); } #[test] fn terser_labels_labels_6() { let src = r###"out: break out; console.log('PASS')"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_issue_t292_no_flatten_with_var_colliding_with_arg_value_inner_scope() { let src = r###"var g = ["a"]; function problem(arg) { return g.indexOf(arg); } function unused(arg) { return problem(arg); } function a(arg) { return problem(arg); } function b(test) { var problem = test * 2; console.log(problem); return g[problem]; } function c(arg) { return b(a(arg)); } console.log(c("a"));"###; let config = r###"{ "collapse_vars": true, "inline": true, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_t292_no_flatten_with_arg_colliding_with_arg_value_inner_scope() { let src = r###"var g = ["a"]; function problem(arg) { return g.indexOf(arg); } function unused(arg) { return problem(arg); } function a(arg) { return problem(arg); } function b(problem) { return g[problem]; } function c(arg) { return b(a(arg)); } console.log(c("a"));"###; let config = r###"{ "collapse_vars": true, "inline": true, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1770_numeric_literal() { let src = r###"var obj = { 0: 0, "-0": 1, 42: 2, 42: 3, 37: 4, o: 5, 1e42: 6, j: 7, 1e42: 8, }; console.log(obj[-0], obj[-""], obj["-0"]); console.log(obj[42], obj["42"]); console.log(obj[37], obj["o"], obj[37], obj["37"]); console.log(obj[1e42], obj["j"], obj["1e+42"]);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1770_mangle_props() { let src = r###"var obj = { undefined: 1, NaN: 2, Infinity: 3, "-Infinity": 4, null: 5 }; console.log( obj[void 0], obj[undefined], obj["undefined"], obj[0 / 0], obj[NaN], obj["NaN"], obj[1 / 0], obj[Infinity], obj["Infinity"], obj[-1 / 0], obj[-Infinity], obj["-Infinity"], obj[null], obj["null"] );"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1105_infinity_not_in_with_scope() { let src = r###"var o = { Infinity: "oInfinity" }; var vInfinity = "Infinity"; vInfinity = Infinity; console.log(o) console.log(vInfinity)"###; let config = r###"{ "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_3113_1() { let src = r###"var c = 0; (function () { function f() { while (g()); } var a = f(); function g() { a && a[c++]; } g((a = 1)); })(); console.log(c);"###; let config = r###"{ "evaluate": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2799_2() { let src = r###"(function () { function foo() { Function.prototype.call.apply(console.log, [null, "PASS"]); } foo(); })();"###; let config = r###"{ "reduce_vars": true, "unsafe_proto": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_recursive_inlining_1() { let src = r###"!(function () { function foo() { bar(); } function bar() { foo(); } console.log("PASS"); })();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_var_assign_2() { let src = r###"!(function () { var a; if ((a = 2)) console.log(a); })();"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2757_1() { let src = r###"let u; (function () { let v; console.log(u, v); })();"###; let config = r###"{ "evaluate": true, "inline": true, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_inverted_var() { let src = r###"console.log( (function () { var a = 1; return a; })(), (function () { var b; b = 2; return b; })(), (function () { c = 3; return c; var c; })(), (function (c) { c = 4; return c; })(), (function (c) { c = 5; return c; var c; })(), (function c() { c = 6; return typeof c; })(), (function c() { c = 7; return c; var c; })(), (function () { c = 8; return c; var c = "foo"; })() );"###; let config = r###"{ "evaluate": true, "inline": true, "passes": 3, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_pure_getters_3() { let src = r###"var a; var a = a && a.b; console.log(a && a.b)"###; let config = r###"{ "pure_getters": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_unsafe_evaluate_side_effect_free_1() { let src = r###"console.log( (function () { var o = { p: 1 }; console.log(o.p); return o.p; })() ); console.log( (function () { var o = { p: 2 }; console.log(o.p); return o; })() ); console.log( (function () { var o = { p: 3 }; console.log([o][0].p); return o.p; })() );"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2420_2() { let src = r###"function f() { var that = this; if (that.bar) that.foo(); else !(function (that, self) { console.log(this === that, self === this, that === self); })(that, this); } f.call({ bar: 1, foo: function () { console.log("foo", this.bar); }, }); f.call({});"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_escape_expansion() { let src = r###"function main() { var thing = baz(); if (thing !== (thing = baz())) console.log("FAIL"); else console.log("PASS"); } function foo() {} function bar(...x) { return x[0]; } function baz() { return bar(...[foo]); } main();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_obj_arg_1() { let src = r###"var C = 1; function f(obj) { return obj.bar(); } console.log( f({ bar: function () { return C + C; }, }) );"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2420_3() { let src = r###"function f() { var that = this; if (that.bar) that.foo(); else ((that, self) => { console.log(this === that, self === this, that === self); })(that, this); } f.call({ bar: 1, foo: function () { console.log("foo", this.bar); }, }); f.call({});"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_reduce_vars_iife_eval_2() { let src = r###"(function () { var x = function f() { return f; }; console.log(x() === eval("x")); })();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_pure_getters_2() { let src = r###"var a; var a = a && a.b; console.log(a && a.b)"###; let config = r###"{ "pure_getters": "strict", "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_func_modified() { let src = r###"function f(a) { function a() { return 1; } function b() { return 2; } function c() { return 3; } b.inject = []; c = function () { return 4; }; return a() + b() + c(); } console.log(f(1423796))"###; let config = r###"{ "inline": true, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2860_1() { let src = r###"console.log( (function (a) { return (a ^= 1); a ^= 2; })() );"###; let config = r###"{ "dead_code": true, "evaluate": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2836() { let src = r###"function f() { return "FAIL"; } console.log(f()); function f() { return "PASS"; }"###; let config = r###"{ "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_chained_assignments() { let src = r###"function f() { var a = [94, 173, 190, 239]; var b = 0; b |= a[0]; b <<= 8; b |= a[1]; b <<= 8; b |= a[2]; b <<= 8; b |= a[3]; return b; } console.log(f().toString(16));"###; let config = r###"{ "evaluate": true, "inline": true, "reduce_vars": true, "sequences": true, "side_effects": true, "toplevel": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_obj_for_1() { let src = r###"var o = { a: 1 }; for (var i = o.a--; i; i--) console.log(i);"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_iife() { let src = r###"!(function (a, b, c) { b++; console.log(a - 1, b * 1, c + 2); })(1, 2, 3);"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_inner_var_label() { let src = r###"function f(a) { l: { if (a) break l; var t = 1; } console.log(t); } f(123123) f(0)"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_side_effects_assign() { let src = r###"var a = typeof void (a && a.in == 1, 0); console.log(a);"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_defun_catch_6() { let src = r###"try { throw 42; } catch (a) { console.log(a); } function a() {}"###; let config = r###"{ "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_passes() { let src = r###"function f() { var a = 1, b = 2, c = 3; if (a) { b = c; } else { c = b; } console.log(a + b); console.log(b + c); console.log(a + c); console.log(a + b + c); } f()"###; let config = r###"{ "conditionals": true, "evaluate": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_defun_catch_1() { let src = r###"function a() {} try { throw 42; } catch (a) { console.log(a); }"###; let config = r###"{ "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_unsafe_evaluate_array_2() { let src = r###"var arr = [ 1, 2, function (x) { return x * x; }, function (x) { return x * x * x; }, ]; console.log(arr[0], arr[1], arr[2](2), arr[3]);"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_1670_6() { let src = r###"(function (a) { switch (1) { case (a = 1): console.log(a); break; default: console.log(2); break; } })(1);"###; let config = r###"{ "dead_code": true, "evaluate": true, "keep_fargs": false, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "switches": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_redefine_farg_1() { let src = r###"function f(a) { var a; return typeof a; } function g(a) { var a = 42; return typeof a; } function h(a, b) { var a = b; return typeof a; } console.log(f([]), g([]), h([]));"###; let config = r###"{ "evaluate": true, "keep_fargs": false, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_1670_1() { let src = r###"(function f() { switch (1) { case 0: var a = true; break; default: if (typeof a === "undefined") console.log("PASS"); else console.log("FAIL"); } })();"###; let config = r###"{ "comparisons": true, "conditionals": true, "dead_code": true, "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "switches": true, "typeofs": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_perf_3() { let src = r###"var foo = function (x, y, z) { return x < y ? x * y + z : x * z - y; }; var indirect_foo = function (x, y, z) { return foo(x, y, z); }; var sum = 0; for (var i = 0; i < 100; ++i) sum += indirect_foo(i, i + 1, 3 * i); console.log(sum);"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_defun_var_3() { let src = r###"function a() {} function b() {} console.log(typeof a, typeof b); var a = 42, b;"###; let config = r###"{ "evaluate": true, "reduce_vars": true, "toplevel": true, "typeofs": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_accessor_2() { let src = r###"var A = 1; var B = { get c() { console.log(A); }, }; B.c;"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_unused_modified() { let src = r###"console.log( (function () { var b = 1, c = "FAIL"; if (0 || b--) c = "PASS"; b = 1; return c; })() );"###; let config = r###"{ "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_unsafe_evaluate_object_1() { let src = r###"function f0() { var a = 1; var b = {}; b[a] = 2; console.log(a + 3); } function f1() { var a = { b: 1 }; a.b = 2; console.log(a.b + 3); } f0() f1()"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_duplicate_lambda_defun_name_1() { let src = r###"console.log( (function f(a) { function f() {} return f.length; })() );"###; let config = r###"{ "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2423_5() { let src = r###"function x() { y(); } function y() { console.log(1); } function z() { function y() { console.log(2); } x(); } z(); z();"###; let config = r###"{ "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_unsafe_evaluate_array_4() { let src = r###"var arr = [ 1, 2, function () { return ++this[0]; }, ]; console.log(arr[0], arr[1], arr[2], arr[0]);"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2774() { let src = r###"console.log( { get a() { var b; (b = true) && b.c; b = void 0; }, }.a );"###; let config = r###"{ "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_lvalues_def_2() { let src = r###"var b = 1; var a = (b += 1), b = NaN; console.log(a, b);"###; let config = r###"{ "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_func_arg_2() { let src = r###"var a = 42; !(function (a) { console.log(a()); })(function (a) { return a; });"###; let config = r###"{ "evaluate": true, "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_unsafe_evaluate() { let src = r###"function f0() { var a = { b: 1 }; console.log(a.b + 3); } function f1() { var a = { b: { c: 1 }, d: 2 }; console.log(a.b + 3, a.d + 4, a.b.c + 5, a.d.c + 6); } console.log(f0()) console.log(f1())"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2423_3() { let src = r###"function c() { return 1; } function p() { console.log(c()); } p();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_defun_inline_3() { let src = r###"function f() { return g(2); function g(b) { return b; } } console.log(f())"###; let config = r###"{ "evaluate": true, "inline": true, "passes": 3, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_3113_2() { let src = r###"var c = 0; (function () { function f() { while (g()); } var a = f(); function g() { a && a[c++]; } a = 1; g(); })(); console.log(c);"###; let config = r###"{ "evaluate": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2799_1() { let src = r###"console.log( (function () { return f; function f(n) { function g(i) { return i && i + g(i - 1); } function h(j) { return g(j); } return h(n); } })()(5) );"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_iife_new() { let src = r###"var A = new (function (a, b, c) { b++; console.log(a - 1, b * 1, c + 2); })(1, 2, 3);"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_recursive_inlining_3() { let src = r###"!(function () { function foo(x) { console.log("foo", x); if (x) bar(x - 1); } function bar(x) { console.log("bar", x); if (x) qux(x - 1); } function qux(x) { console.log("qux", x); if (x) foo(x - 1); } qux(4); })();"###; let config = r###"{ "passes": 2, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_recursive_inlining_4() { let src = r###"!(function () { function foo(x) { console.log("foo", x); if (x) bar(x - 1); } function bar(x) { console.log("bar", x); if (x) qux(x - 1); } function qux(x) { console.log("qux", x); if (x) foo(x - 1); } qux(4); bar(5); })();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2757_2() { let src = r###"(function () { let bar; const unused = function () { bar = true; }; if (!bar) { console.log(1); } console.log(2); })();"###; let config = r###"{ "conditionals": true, "evaluate": true, "inline": true, "passes": 2, "reduce_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_recursive_inlining_2() { let src = r###"!(function () { function foo() { qux(); } function bar() { foo(); } function qux() { bar(); } console.log("PASS"); })();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_var_assign_1() { let src = r###"!(function () { var a; a = 2; console.log(a); })();"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_1865() { let src = r###"function f(some) { some.thing = false; } console.log( (function () { var some = { thing: true }; f(some); return some.thing; })() );"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2449() { let src = r###"var a = "PASS"; function f() { return a; } function g() { return f(); } (function () { var a = "FAIL"; if (a == a) console.log(g()); })();"###; let config = r###"{ "passes": 10, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2420_1() { let src = r###"function run() { var self = this; if (self.count++) self.foo(); else self.bar(); } var o = { count: 0, foo: function () { console.log("foo"); }, bar: function () { console.log("bar"); }, }; run.call(o); run.call(o);"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2485() { let src = r###"var foo = function (bar) { var n = function (a, b) { return a + b; }; var sumAll = function (arg) { return arg.reduce(n, 0); }; var runSumAll = function (arg) { return sumAll(arg); }; bar.baz = function (arg) { var n = runSumAll(arg); return (n.get = 1), n; }; return bar; }; var bar = foo({}); console.log(bar.baz([1, 2, 3]));"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_inner_var_for_2() { let src = r###"!(function () { var a = 1; for (var b = 1; --b; ) var a = 2; console.log(a); })();"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_obj_arg_2() { let src = r###"var C = 1; function f(obj) { return obj.bar(); } console.log( f({ bar: function () { return C + C; }, }) );"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": true, "passes": 3, "properties": true, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_reduce_vars_reduce_vars() { let src = r###"var A = 1; (function f0() { var a = 2; console.log(a - 5); console.log(A - 5); })(); (function f1() { var a = 2; console.log(a - 5); eval("console.log(a);"); })(); (function f2(eval) { var a = 2; console.log(a - 5); eval("console.log(a);"); })(eval); (function f3() { var b = typeof C !== "undefined"; var c = 4; if (b) { return "yes"; } else { return "no"; } })(); console.log(A + 1);"###; let config = r###"{ "conditionals": true, "evaluate": true, "global_defs": { "C": 0 }, "inline": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_modified() { let src = r###"function f0() { var a = 1, b = 2; b++; console.log(a + 1); console.log(b + 1); } function f1() { var a = 1, b = 2; --b; console.log(a + 1); console.log(b + 1); } function f2() { var a = 1, b = 2, c = 3; b = c; console.log(a + b); console.log(b + c); console.log(a + c); console.log(a + b + c); } function f3() { var a = 1, b = 2, c = 3; b *= c; console.log(a + b); console.log(b + c); console.log(a + c); console.log(a + b + c); } function f4() { var a = 1, b = 2, c = 3; if (a) { b = c; } else { c = b; } console.log(a + b); console.log(b + c); console.log(a + c); console.log(a + b + c); } function f5(a) { B = a; console.log(typeof A ? "yes" : "no"); console.log(typeof B ? "yes" : "no"); } f0(), f1(), f2(), f3(), f4(), f5();"###; let config = r###"{ "conditionals": true, "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_unsafe_evaluate_escaped() { let src = r###"console.log( (function () { var o = { p: 1 }; console.log(o, o.p); return o.p; })() ); console.log( (function () { var o = { p: 2 }; console.log(o.p, o); return o.p; })() ); console.log( (function () { var o = { p: 3 }, a = [o]; console.log(a[0].p++); return o.p; })() );"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2669() { let src = r###"let foo; console.log(([foo] = ["PASS"]) && foo);"###; let config = r###"{ "evaluate": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_defun_catch_3() { let src = r###"try { throw 42; function a() {} } catch (a) { console.log(a); }"###; let config = r###"{ "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2860_2() { let src = r###"console.log( (function (a) { return (a ^= 1); a ^= 2; })() );"###; let config = r###"{ "dead_code": true, "evaluate": true, "inline": true, "passes": 2, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_delay_def() { let src = r###"function f() { return a; var a; } function g() { return a; var a = 1; } console.log(f(), g());"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2496() { let src = r###"function execute(callback) { callback(); } class Foo { constructor(message) { this.message = message; } go() { this.message = "PASS"; console.log(this.message); } run() { execute(() => { this.go(); }); } } new Foo("FAIL").run();"###; let config = r###"{ "passes": 2, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_defun_catch_2() { let src = r###"try { function a() {} throw 42; } catch (a) { console.log(a); }"###; let config = r###"{ "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2450_5() { let src = r###"var a; function f(b) { console.log(a === b); a = b; } function g() {} [1, 2, 3].forEach(function () { f(g); });"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_1850_2() { let src = r###"function f() { console.log(a, a, a); } var a = 1; f();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": "funcs", "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_3110_3() { let src = r###"(function () { function foo() { return isDev ? "foo" : "bar"; } console.log(foo()); var isDev = true; var obj = { foo: foo }; console.log(obj.foo()); })();"###; let config = r###"{ "conditionals": true, "evaluate": true, "inline": true, "properties": true, "reduce_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_defun_redefine() { let src = r###"function f() { function g() { return 1; } function h() { return 2; } g = function () { return 3; }; return g() + h(); } console.log(f())"###; let config = r###"{ "inline": true, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2423_6() { let src = r###"function x() { y(); } function y() { console.log(1); } function z() { function y() { console.log(2); } x(); y(); } z(); z();"###; let config = r###"{ "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_unsafe_evaluate_object_2() { let src = r###"var obj = { foo: 1, bar: 2, square: function (x) { return x * x; }, cube: function (x) { return x * x * x; }, }; console.log(obj.foo, obj.bar, obj.square(2), obj.cube);"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_2423_1() { let src = r###"function c() { return 1; } function p() { console.log(c()); } p(); p();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_redefine_farg_2() { let src = r###"function f(a) { var a; return typeof a; } function g(a) { var a = 42; return typeof a; } function h(a, b) { var a = b; return typeof a; } console.log(f([]), g([]), h([]));"###; let config = r###"{ "evaluate": true, "inline": true, "keep_fargs": false, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_1670_2() { let src = r###"(function f() { switch (1) { case 0: var a = true; break; default: if (typeof a === "undefined") console.log("PASS"); else console.log("FAIL"); } })();"###; let config = r###"{ "conditionals": true, "dead_code": true, "evaluate": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "switches": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_unsafe_evaluate_array_1() { let src = r###"function f0() { var a = 1; var b = []; b[a] = 2; console.log(a + 3); } function f1() { var a = [1]; a[2] = 3; console.log(a.length); } function f2() { var a = [1]; a.push(2); console.log(a.length); } console.log(f0()) console.log(f1()) console.log(f2())"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_perf_7() { let src = r###"var indirect_foo = function (x, y, z) { var foo = function (x, y, z) { return x < y ? x * y + z : x * z - y; }; return foo(x, y, z); }; var sum = 0; for (var i = 0; i < 100; ++i) sum += indirect_foo(i, i + 1, 3 * i); console.log(sum);"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_1670_5() { let src = r###"(function (a) { switch (1) { case a: console.log(a); break; default: console.log(2); break; } })(1);"###; let config = r###"{ "dead_code": true, "evaluate": true, "keep_fargs": false, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "switches": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_escaped_prop_3() { let src = r###"var a; function f(b) { if (a) console.log(a === b.c); a = b.c; } function g() {} function h() { f({ c: g }); } h(); h();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_defun_call() { let src = r###"function f() { return g() + h(1) - h(g(), 2, 3); function g() { return 4; } function h(a) { return a; } } console.log(f())"###; let config = r###"{ "evaluate": true, "inline": true, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_defun_label() { let src = r###"!(function () { function f(a) { L: { if (a) break L; return 1; } } console.log(f(2)); })();"###; let config = r###"{ "passes": 2, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_reduce_vars_unsafe_evaluate_modified() { let src = r###"console.log( (function () { var o = { p: 1 }; o.p++; console.log(o.p); return o.p; })() ); console.log( (function () { var o = { p: 2 }; --o.p; console.log(o.p); return o.p; })() ); console.log( (function () { var o = { p: 3 }; o.p += ""; console.log(o.p); return o.p; })() ); console.log( (function () { var o = { p: 4 }; o = {}; console.log(o.p); return o.p; })() ); console.log( (function () { var o = { p: 5 }; o.p = -9; console.log(o.p); return o.p; })() ); function inc() { this.p++; } console.log( (function () { var o = { p: 6 }; inc.call(o); console.log(o.p); return o.p; })() ); console.log( (function () { var o = { p: 7 }; console.log([o][0].p++); return o.p; })() ); console.log( (function () { var o = { p: 8 }; console.log({ q: o }.q.p++); return o.p; })() );"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_lvalues_def_1() { let src = r###"var b = 1; var a = b++, b = NaN; console.log(a, b);"###; let config = r###"{ "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_func_arg_1() { let src = r###"var a = 42; !(function (a) { console.log(a()); })(function () { return a; });"###; let config = r###"{ "evaluate": true, "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_escape_local_sequence() { let src = r###"function main() { var thing = baz(); if (thing !== (thing = baz())) console.log("PASS"); else console.log("FAIL"); } function baz() { function foo() {} function bar() {} return foo, bar; } main();"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_regex_loop() { let src = r###"function f(x) { for (var r, s = "acdabcdeabbb"; (r = x().exec(s)); ) console.log(r[0]); } var a = /ab*/g; f(function () { return a; });"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_3140_4() { let src = r###"(function () { var a; function f() {} f.g = function g() { var o = { p: this }; function h() { console.log(a ? "PASS" : "FAIL"); } a = true; o.p(); a = false; h.g = g; return h; }; return f; })() .g() .g();"###; let config = r###"{ "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_1670_4() { let src = r###"(function f() { switch (1) { case 0: var a = true; break; case 1: if (typeof a === "undefined") console.log("PASS"); else console.log("FAIL"); } })();"###; let config = r###"{ "conditionals": true, "dead_code": true, "evaluate": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "switches": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_redefine_farg_3() { let src = r###"function f(a) { var a; return typeof a; } function g(a) { var a = 42; return typeof a; } function h(a, b) { var a = b; return typeof a; } console.log(f([]), g([]), h([]));"###; let config = r###"{ "collapse_vars": true, "evaluate": true, "inline": true, "keep_fargs": false, "passes": 3, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_3140_3() { let src = r###"(function () { var a; function f() {} f.g = function g() { var self = this; function h() { console.log(a ? "PASS" : "FAIL"); } a = true; (function () { return self; })()(); a = false; h.g = g; return h; }; return f; })() .g() .g();"###; let config = r###"{ "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_issue_1670_3() { let src = r###"(function f() { switch (1) { case 0: var a = true; break; case 1: if (typeof a === "undefined") console.log("PASS"); else console.log("FAIL"); } })();"###; let config = r###"{ "comparisons": true, "conditionals": true, "dead_code": true, "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "switches": true, "typeofs": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_reduce_vars_perf_1() { let src = r###"function foo(x, y, z) { return x < y ? x * y + z : x * z - y; } function indirect_foo(x, y, z) { return foo(x, y, z); } var sum = 0; for (var i = 0; i < 100; ++i) { sum += indirect_foo(i, i + 1, 3 * i); } console.log(sum);"###; let config = r###"{ "reduce_funcs": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2187_2() { let src = r###"var b = 1; console.log( (function (a) { return a && ++b; })(b--) );"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2436_14() { let src = r###"var a = "PASS"; var b = {}; (function () { var c = a; c && (function (c, d) { console.log(c, d); })(b, c); })();"###; let config = r###"{ "collapse_vars": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2506() { let src = r###"var c = 0; function f0(bar) { function f1(Infinity_2) { function f13(NaN) { if ((false <= NaN) & (this >> 1 >= 0)) { c++; } } var b_2 = f13(NaN, c++); } var bar = f1(-3, -1); } f0(false); console.log(c);"###; let config = r###"{ "collapse_vars": true, "passes": 2, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2436_13() { let src = r###"var a = "PASS"; (function () { function f(b) { (function g(b) { var b = b && (b.null = "FAIL"); })(a); } f(); })(); console.log(a);"###; let config = r###"{ "collapse_vars": true, "passes": 2, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2187_3() { let src = r###"var b = 1; console.log( (function (a) { return a && ++b; })(b--) );"###; let config = r###"{ "collapse_vars": true, "inline": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2203_1() { let src = r###"a = "FAIL"; console.log( { a: "PASS", b: function () { return (function (c) { return c.a; })((String, Object, this)); }, }.b() );"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2914_2() { let src = r###"function read(input) { var i = 0; var e = 0; var t = 0; while (e < 32) { var n = input[i++]; t = (127 & n) << e; if (0 === (128 & n)) return t; e += 7; } } console.log(read([129]));"###; let config = r###"{ "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2319_1() { let src = r###"console.log( (function (a) { return a; })( !(function () { return this; })() ) );"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_cascade_forin() { let src = r###"var a; function f(b) { return [b, b, b]; } for (var c in ((a = console), f(a))) console.log(c);"###; let config = r###"{ "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_inner_lvalues() { let src = r###"var a, b = 10; var a = (--b || a || 3).toString(), c = --b + -a; console.log(null, a, b);"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2298() { let src = r###"!(function () { function f() { var a = undefined; var undefined = a++; try { !(function g(b) { b[1] = "foo"; })(); console.log("FAIL"); } catch (e) { console.log("PASS"); } } f(); })();"###; let config = r###"{ "collapse_vars": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_chained_3() { let src = r###"console.log( (function (a, b) { var c = a, c = b; b++; return c; })(1, 2) );"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_collapse_vars_self_reference() { let src = r###"function f1() { var self = { inner: function () { return self; }, }; console.log(self) } function f2() { var self = { inner: self }; console.log(self) } f1() f2()"###; let config = r###"{ "booleans": true, "collapse_vars": true, "comparisons": true, "conditionals": true, "dead_code": true, "evaluate": true, "hoist_funs": true, "if_return": true, "join_vars": true, "keep_fargs": true, "loops": true, "properties": true, "sequences": true, "side_effects": true, "unused": false }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_chained_2() { let src = r###"var a; var a = 2; a = 3 / a; console.log(a);"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_cond_branch_1() { let src = r###"function f1(b, c) { var log = console.log; var a = ++c; if (b) b++; log(a, b); } function f2(b, c) { var log = console.log; var a = ++c; b && b++; log(a, b); } function f3(b, c) { var log = console.log; var a = ++c; b ? b++ : b--; log(a, b); } f1(1, 2); f2(3, 4); f3(5, 6);"###; let config = r###"{ "collapse_vars": true, "sequences": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_var_side_effects_2() { let src = r###"var print = console.log.bind(console); function foo(x) { var twice = x.y * 2; print("Foo:", twice); } foo({ y: 10 });"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_3032() { let src = r###"console.log( { f: function () { this.a = 42; return [this.a, !1]; }, }.f()[0] );"###; let config = r###"{ "collapse_vars": true, "pure_getters": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_var_side_effects_3() { let src = r###"var print = console.log.bind(console); function foo(x) { var twice = x.y * 2; print("Foo:", twice); } foo({ y: 10 });"###; let config = r###"{ "collapse_vars": true, "pure_getters": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_collapse_vars_throw() { let src = r###"var f1 = function (x, y) { var a, b, r = x + y, q = r * r, z = q - r; (a = z), (b = 7); throw a + b; }; try { f1(1, 2); } catch (e) { console.log(e); }"###; let config = r###"{ "booleans": true, "collapse_vars": true, "comparisons": true, "conditionals": true, "dead_code": true, "evaluate": true, "hoist_funs": true, "if_return": true, "join_vars": true, "keep_fargs": true, "loops": true, "properties": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2203_4() { let src = r###"a = "FAIL"; console.log( { a: "PASS", b: function () { return ((c) => c.a)((String, Object, (() => this)())); }, }.b() );"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2203_3() { let src = r###"a = "FAIL"; console.log( { a: "PASS", b: function () { return (function (c) { return c.a; })((String, Object, (() => this)())); }, }.b() );"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2187_1() { let src = r###"var a = 1; !(function (foo) { foo(); var a = 2; console.log(a); })(function () { console.log(a); });"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_var_defs() { let src = r###"var f1 = function (x, y) { var a, b, r = x + y, q = r * r, z = q - r, a = z, b = 7; console.log(a + b); }; f1("1", 0);"###; let config = r###"{ "booleans": true, "collapse_vars": true, "comparisons": true, "conditionals": true, "dead_code": true, "evaluate": true, "hoist_funs": true, "if_return": true, "join_vars": true, "keep_fargs": true, "loops": true, "properties": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2203_2() { let src = r###"a = "PASS"; console.log( { a: "FAIL", b: function () { return (function (c) { return c.a; })( (String, Object, (function () { return this; })()) ); }, }.b() );"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_collapse_vars_seq() { let src = r###"var f1 = function (x, y) { var a, b, r = x + y, q = r * r, z = q - r; (a = z), (b = 7); return a + b; }; console.log(f1(1, 2));"###; let config = r###"{ "booleans": true, "collapse_vars": true, "comparisons": true, "conditionals": true, "dead_code": true, "evaluate": true, "hoist_funs": true, "if_return": true, "join_vars": true, "keep_fargs": true, "loops": true, "properties": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2319_3() { let src = r###""use strict"; console.log( (function (a) { return a; })( !(function () { return this; })() ) );"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_may_throw_2() { let src = r###"function f(b) { try { var a = x(); ++b; return b(a); } catch (e) {} console.log(b); } f(0);"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_issue_2453() { let src = r###"function log(n) { console.log(n); } const a = 42; log(a);"###; let config = r###"{ "collapse_vars": true, "conditionals": true, "inline": true, "join_vars": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_cond_branch_2() { let src = r###"function f1(b, c) { var log = console.log; var a = ++c; if (b) b += a; log(a, b); } function f2(b, c) { var log = console.log; var a = ++c; b && (b += a); log(a, b); } function f3(b, c) { var log = console.log; var a = ++c; b ? (b += a) : b--; log(a, b); } f1(1, 2); f2(3, 4); f3(5, 6);"###; let config = r###"{ "collapse_vars": true, "sequences": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_chained_1() { let src = r###"var a = 2; var a = 3 / a; console.log(a);"###; let config = r###"{ "collapse_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_collapse_vars_reduce_vars_assign() { let src = r###"!(function () { var a = 1; (a = [].length), console.log(a); })();"###; let config = r###"{ "collapse_vars": true, "reduce_funcs": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_inline_inline_within_extends_2() { let src = r###"class Baz extends foo(bar(Array)) { constructor() { super(...arguments); } } function foo(foo_base) { return class extends foo_base { constructor() { super(...arguments); } second() { return this[1]; } }; } function bar(bar_base) { return class extends bar_base { constructor(...args) { super(...args); } }; } console.log(new Baz(1, "PASS", 3).second());"###; let config = r###"{ "defaults": true, "evaluate": true, "inline": 3, "passes": 3, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "collapse_vars": false, "unused": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_evaluate_unsafe_float_key() { let src = r###"console.log( { 2.72: 1 } + 1, { 2.72: 1 }[2.72] + 1, { 2.72: 1 }["2.72"] + 1, { 2.72: 1 }[3.14] + 1, { 2.72: 1 }[2.72][3.14] + 1, { 2.72: 1 }[2.72]["3.14"] + 1 );"###; let config = r###"{ "evaluate": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_evaluate_unsafe_float_key_complex() { let src = r###"console.log( { 2.72: { 3.14: 1 }, 3.14: 1 } + 1, { 2.72: { 3.14: 1 }, 3.14: 1 }[2.72] + 1, { 2.72: { 3.14: 1 }, 3.14: 1 }["2.72"] + 1, { 2.72: { 3.14: 1 }, 3.14: 1 }[3.14] + 1, { 2.72: { 3.14: 1 }, 3.14: 1 }[2.72][3.14] + 1, { 2.72: { 3.14: 1 }, 3.14: 1 }[2.72]["3.14"] + 1 );"###; let config = r###"{ "evaluate": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_892_dont_mangle_arguments() { let src = r###"(function () { var arguments = arguments, not_arguments = 9; console.log(not_arguments, arguments); })(5, 6, 7);"###; let config = r###"{ "booleans": true, "comparisons": true, "conditionals": true, "dead_code": true, "drop_debugger": true, "evaluate": true, "hoist_funs": true, "hoist_vars": true, "if_return": true, "join_vars": true, "keep_fargs": true, "keep_fnames": false, "loops": true, "negate_iife": false, "properties": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_issue_t64() { let src = r###"var obj = {}; obj.Base = class { constructor() { this.id = "PASS"; } }; obj.Derived = class extends obj.Base { constructor() { super(); console.log(this.id); } }; new obj.Derived();"###; let config = r###"{ "collapse_vars": true, "join_vars": true, "properties": true, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_computed_property() { let src = r###"console.log({ a: "bar", [console.log("foo")]: 42 }.a);"###; let config = r###"{ "properties": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_sub_properties() { let src = r###"const a = {}; a[0] = 0; a["0"] = 1; a[3.14] = 2; a["3" + ".14"] = 3; a["i" + "f"] = 4; a["foo" + " bar"] = 5; a[0 / 0] = 6; a[null] = 7; a[undefined] = 8; console.log(a)"###; let config = r###"{ "evaluate": true, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_dont_mangle_computed_property_2() { let src = r###"const prop = Symbol("foo"); const obj = { [prop]: "bar", baz: 1, qux: 2, [3 + 4]: "seven", 0: "zero", 1: "one", null: "Null", undefined: "Undefined", Infinity: "infinity", NaN: "nan", void: "Void", }; console.log( obj[prop], obj["baz"], obj.qux, obj[7], obj[0], obj[1 + 0], obj[null], obj[undefined], obj[1 / 0], obj[NaN], obj.void ); console.log(obj.null, obj.undefined, obj.Infinity, obj.NaN);"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_prop_side_effects_2() { let src = r###"var C = 1; console.log(C); var obj = { "": function () { return C + C; }, }; console.log(obj[""]());"###; let config = r###"{ "evaluate": true, "inline": true, "passes": 2, "properties": true, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_negative() { let src = r###"var o = {}; o[0] = 0; o[-0] = 1; o[-1] = 2; console.log(o[0], o[-0], o[-1]);"###; let config = r###"{ "evaluate": true, "join_vars": true, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_issue_2208_4() { let src = r###"function foo() {} console.log( { a: foo(), p: function () { return 42; }, }.p() );"###; let config = r###"{ "inline": true, "properties": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_issue_869_1() { let src = r###"var o = { p: "FAIL" }; Object.defineProperty(o, "p", { get: function () { return "PASS"; }, }); console.log(o.p);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_undefined_2() { let src = r###"var o = {}; o[undefined] = 1; console.log(o[undefined]);"###; let config = r###"{ "evaluate": true, "join_vars": true, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_issue_2208_5() { let src = r###"console.log( { p: "FAIL", p: function () { return 42; }, }.p() );"###; let config = r###"{ "inline": true, "properties": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_issue_2513() { let src = r###"!(function (Infinity, NaN, undefined) { console.log("a"[1 / 0], "b"["Infinity"]); console.log("c"[0 / 0], "d"["NaN"]); console.log("e"[void 0], "f"["undefined"]); })(0, 0, 0);"###; let config = r###"{ "evaluate": true, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_return_1() { let src = r###"console.log( (function () { var o = { p: 3 }; return (o.q = "foo"); })() );"###; let config = r###"{ "join_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_issue_2816_ecma6() { let src = r###""use strict"; var o = { a: 1 }; o.b = 2; o.a = 3; o.c = 4; console.log(o.a, o.b, o.c);"###; let config = r###"{ "ecma": "6", "join_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_1() { let src = r###"console.log( (function () { var x = { a: 1, c: (console.log("c"), "C") }; x.b = 2; (x[3] = function () { console.log(x); }), (x["a"] = /foo/), (x.bar = x); return x; })() );"###; let config = r###"{ "evaluate": true, "join_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_dont_mangle_computed_property_1() { let src = r###""AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"; "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"; "CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC"; const prop = Symbol("foo"); const obj = { [prop]: "bar", baz: 1, qux: 2, [3 + 4]: "seven", 0: "zero", 1: "one", null: "Null", undefined: "Undefined", Infinity: "infinity", NaN: "nan", void: "Void", }; console.log( obj[prop], obj["baz"], obj.qux, obj[7], obj[0], obj[1 + 0], obj[null], obj[undefined], obj[1 / 0], obj[NaN], obj.void ); console.log(obj.null, obj.undefined, obj.Infinity, obj.NaN);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_if() { let src = r###"console.log( (function () { var o = {}; if ((o.a = "PASS")) return o.a; })() );"###; let config = r###"{ "join_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_nan_2() { let src = r###"var o = {}; o[NaN] = 1; o[0 / 0] = 2; console.log(o[NaN], o[NaN]);"###; let config = r###"{ "evaluate": true, "join_vars": true, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_prop_side_effects_1() { let src = r###"var C = 1; console.log(C); var obj = { bar: function () { return C + C; }, }; console.log(obj.bar());"###; let config = r###"{ "evaluate": true, "inline": true, "properties": true, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_null_1() { let src = r###"var o = {}; o[null] = 1; console.log(o[null]);"###; let config = r###"{ "evaluate": true, "join_vars": true, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_issue_2208_7() { let src = r###"console.log( { p() { return 42; }, }.p() );"###; let config = r###"{ "ecma": 2015, "inline": true, "properties": true, "side_effects": true, "unsafe_arrows": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_issue_869_2() { let src = r###"var o = { p: "FAIL" }; Object.defineProperties(o, { p: { get: function () { return "PASS"; }, }, }); console.log(o.p);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_properties_issue_2208_9() { let src = r###"a = 42; console.log( { p: () => (function () { return this.a; })(), }.p() );"###; let config = r###"{ "inline": true, "properties": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_undefined_1() { let src = r###"var o = {}; o[undefined] = 1; console.log(o[undefined]);"###; let config = r###"{ "join_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_forin() { let src = r###"console.log( (function () { var o = {}; for (var a in ((o.a = "PASS"), o)) return o[a]; })() );"###; let config = r###"{ "join_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_void_0() { let src = r###"var o = {}; o[void 0] = 1; console.log(o[void 0]);"###; let config = r###"{ "evaluate": true, "join_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_return_2() { let src = r###"console.log( (function () { var o = { p: 3 }; return (o.q = /foo/), (o.r = "bar"); })() );"###; let config = r###"{ "join_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_regex() { let src = r###"var o = {}; o[/rx/] = 1; console.log(o[/rx/]);"###; let config = r###"{ "evaluate": true, "join_vars": true, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_2() { let src = r###"var o = { foo: 1 }; o.bar = 2; o.baz = 3; console.log(o.foo, o.bar + o.bar, o.foo * o.bar * o.baz);"###; let config = r###"{ "evaluate": true, "hoist_props": true, "join_vars": true, "passes": 3, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_properties_join_object_assignments_return_3() { let src = r###"console.log( (function () { var o = { p: 3 }; return (o.q = "foo"), (o.p += ""), console.log(o.q), o.p; })() );"###; let config = r###"{ "join_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1321_issue_1321_no_debug() { let src = r###"var x = {}; x.foo = 1; x["a"] = 2 * x.foo; console.log(x.foo, x["a"]);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1321_issue_1321_with_quoted() { let src = r###"var x = {}; x.foo = 1; x["a"] = 2 * x.foo; console.log(x.foo, x["a"]);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1321_issue_1321_debug() { let src = r###"var x = {}; x.foo = 1; x["_$foo$_"] = 2 * x.foo; console.log(x.foo, x["_$foo$_"]);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_issue_976_eval_collapse_vars() { let src = r###"function f1() { var e = 7; var s = "abcdef"; var i = 2; var eval = console.log.bind(console); var x = s.charAt(i++); var y = s.charAt(i++); var z = s.charAt(i++); eval(x, y, z, e); } function p1() { var a = foo(), b = bar(), eval = baz(); return a + b + eval; } function p2() { var a = foo(), b = bar(), eval = baz; return a + b + eval(); } (function f2(eval) { var a = 2; console.log(a - 5); eval("console.log(a);"); })(eval);"###; let config = r###"{ "booleans": true, "collapse_vars": true, "comparisons": true, "conditionals": true, "dead_code": true, "evaluate": true, "hoist_funs": true, "if_return": true, "join_vars": true, "keep_fargs": true, "loops": true, "properties": true, "sequences": false, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_array_constructor_unsafe() { let src = r###"const foo = 'string' console.log(new Array()); console.log(new Array(0)); console.log(new Array(1)); console.log(new Array(11)); console.log(Array(11)); console.log(new Array(12)); console.log(Array(12)); console.log(new Array(foo)); console.log(Array(foo)); console.log(new Array("foo")); console.log(Array("foo"));"###; let config = r###"{ "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_sequences_forin() { let src = r###"var o = []; o.push("PASS"); for (var a in o) console.log(o[a]);"###; let config = r###"{ "sequences": true }"###; run_exec_test(src, config, false); } #[test] fn terser_sequences_for_init_var() { let src = r###"var a = "PASS"; (function () { var b = 42; for (var c = 5; c > 0; ) c--; a = "FAIL"; var a; })(); console.log(a);"###; let config = r###"{ "join_vars": true, "unused": false }"###; run_exec_test(src, config, false); } #[test] fn terser_sequences_func_def_1() { let src = r###"function f() { return (f = 0), !!f; } console.log(f());"###; let config = r###"{ "collapse_vars": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1639_issue_1639_1() { let src = r###"var a = 100, b = 10; var L1 = 5; while (--L1 > 0) { if ((--b, false)) { if (b) { var ignore = 0; } } } console.log(a, b);"###; let config = r###"{ "booleans": true, "collapse_vars": true, "conditionals": true, "evaluate": true, "join_vars": true, "loops": true, "sequences": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1639_issue_1639_2() { let src = r###"var a = 100, b = 10; function f19() { if ((++a, false)) if (a) if (++a); } f19(); console.log(a, b);"###; let config = r###"{ "booleans": true, "collapse_vars": true, "conditionals": true, "evaluate": true, "join_vars": true, "sequences": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arrays_for_loop() { let src = r###"function f0() { var a = [1, 2, 3]; var b = 0; for (var i = 0; i < a.length; i++) b += a[i]; return b; } function f1() { var a = [1, 2, 3]; var b = 0; for (var i = 0, len = a.length; i < len; i++) b += a[i]; return b; } function f2() { var a = [1, 2, 3]; for (var i = 0; i < a.length; i++) a[i]++; return a[2]; } console.log(f0(), f1(), f2());"###; let config = r###"{ "evaluate": true, "reduce_funcs": true, "reduce_vars": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_keep_quoted_strict_keep_quoted_strict() { let src = r###"var propa = 1; var a = { propa, get propb() { return 2; }, propc: 3, get propd() { return 4; }, }; var b = { propa: 5, get propb() { return 6; }, propc: 7, get propd() { return 8; }, }; var c = {}; Object.defineProperty(c, "propa", { value: 9 }); Object.defineProperty(c, "propc", { value: 10 }); console.log(a.propa, a.propb, a.propc, a["propc"], a.propd, a["propd"]); console.log(b["propa"], b["propb"], b.propc, b["propc"], b.propd, b["propd"]); console.log(c.propa, c["propc"]);"###; let config = r###"{ "evaluate": true, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_switch_issue_1663() { let src = r###"var a = 100, b = 10; function f() { switch (1) { case 1: b = a++; return ++b; default: var b; } } f(); console.log(a, b);"###; let config = r###"{ "dead_code": true, "evaluate": true, "side_effects": true, "switches": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2107() { let src = r###"var c = 0; !(function () { c++; })( c++ + new (function () { this.a = 0; var a = (c = c + 1) + (c = 1 + c); return c++ + a; })() ); console.log(c);"###; let config = r###"{ "collapse_vars": true, "inline": true, "passes": 3, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2630_5() { let src = r###"var c = 1; !(function () { do { c *= 10; } while (f()); function f() { return (function () { return (c = 2 + c) < 100; })((c = c + 3)); } })(); console.log(c);"###; let config = r###"{ "collapse_vars": true, "inline": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2630_2() { let src = r###"var c = 0; !(function () { while (f()) {} function f() { var not_used = (function () { c = 1 + c; })((c = c + 1)); } })(); console.log(c);"###; let config = r###"{ "collapse_vars": true, "inline": true, "passes": 2, "reduce_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2101() { let src = r###"a = {}; console.log( (function () { return (function () { return this.a; })(); })() === (function () { return a; })() );"###; let config = r###"{ "inline": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2630_3() { let src = r###"var x = 2, a = 1; (function () { function f1(a) { f2(); --x >= 0 && f1({}); } f1(a++); function f2() { a++; } })(); console.log(a);"###; let config = r###"{ "inline": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2630_4() { let src = r###"var x = 3, a = 1, b = 2; (function () { (function f1() { while (--x >= 0 && f2()); })(); function f2() { a++ + (b += a); } })(); console.log(a);"###; let config = r###"{ "collapse_vars": true, "inline": true, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_1841_2() { let src = r###"var b = 10; !(function (arg) { for (var key in "hi") var n = arg.baz, n = [(b = 42)]; })(--b); console.log(b);"###; let config = r###"{ "keep_fargs": false, "pure_getters": false, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_t131a() { let src = r###"(function () { function thing() { return { a: 1 }; } function one() { return thing(); } function two() { var x = thing(); x.a = 2; x.b = 3; return x; } console.log(JSON.stringify(one()), JSON.stringify(two())); })();"###; let config = r###"{ "inline": 1, "join_vars": true, "reduce_vars": true, "side_effects": true, "passes": 2, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_unsafe_apply_1() { let src = r###"(function (a, b) { console.log(a, b); }.apply("foo", ["bar"])); (function (a, b) { console.log(this, a, b); }.apply("foo", ["bar"])); (function (a, b) { console.log(a, b); }.apply("foo", ["bar"], "baz"));"###; let config = r###"{ "inline": true, "passes": 2, "reduce_vars": true, "side_effects": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2898() { let src = r###"var c = 0; (function () { while (f()); function f() { var b = ((c = 1 + c), void (c = 1 + c)); b && b[0]; } })(); console.log(c);"###; let config = r###"{ "collapse_vars": true, "inline": true, "reduce_vars": true, "sequences": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_inline_1() { let src = r###"(function () { console.log(1); })(); (function (a) { console.log(a); })(2); (function (b) { var c = b; console.log(c); })(3);"###; let config = r###"{ "inline": 1, "side_effects": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_3125() { let src = r###"console.log( function () { return "PASS"; }.call() );"###; let config = r###"{ "inline": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_3016_2() { let src = r###"var b = 1; do { (function (a) { return a[b]; try { a = 2; } catch (a) { var a; } })(3); } while (0); console.log(b);"###; let config = r###"{ "dead_code": true, "inline": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2531_1() { let src = r###"function outer() { function inner(value) { function closure() { return value; } return function () { return closure(); }; } return inner("Hello"); } console.log("Greeting:", outer()());"###; let config = r###"{ "evaluate": true, "inline": true, "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_use_before_init_in_loop() { let src = r###"var a = "PASS"; for (var b = 2; --b >= 0; ) (function () { var c = (function () { return 1; })(c && (a = "FAIL")); })(); console.log(a);"###; let config = r###"{ "inline": true, "side_effects": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_unsafe_apply_expansion_2() { let src = r###"var values = [2, 3]; console.log.apply(console, [1, ...values, 4]);"###; let config = r###"{ "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2663_2() { let src = r###"(function () { var i; function fn(j) { return (function () { console.log(j); })(); } for (i in { a: 1, b: 2, c: 3 }) fn(i); })();"###; let config = r###"{ "inline": true, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_unsafe_call_3() { let src = r###"console.log( function () { return arguments[0] + eval("arguments")[1]; }.call(0, 1, 2) );"###; let config = r###"{ "side_effects": true, "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_unsafe_call_expansion_1() { let src = r###"(function (...a) { console.log(...a); }.call(console, 1, ...[2, 3], 4));"###; let config = r###"{ "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2630_1() { let src = r###"var c = 0; (function () { while (f()); function f() { var a = (function () { var b = c++, d = (c = 1 + c); })(); } })(); console.log(c);"###; let config = r###"{ "collapse_vars": true, "inline": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "sequences": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_203() { let src = r###"var m = {}; var fn = Function("require", "module", "exports", "module.exports = 42;"); fn(null, m, m.exports); console.log(m.exports);"###; let config = r###"{ "keep_fargs": false, "side_effects": true, "unsafe_Function": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2842() { let src = r###"(function () { function inlinedFunction(data) { return data[data[0]]; } function testMinify() { if (true) { const data = inlinedFunction([1, 2, 3]); console.log(data); } } return testMinify(); })();"###; let config = r###"{ "side_effects": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_1841_1() { let src = r###"var b = 10; !(function (arg) { for (var key in "hi") var n = arg.baz, n = [(b = 42)]; })(--b); console.log(b);"###; let config = r###"{ "keep_fargs": false, "pure_getters": "strict", "reduce_funcs": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2476() { let src = r###"function foo(x, y, z) { return x < y ? x * y + z : x * z - y; } for (var sum = 0, i = 0; i < 10; i++) sum += foo(i, i + 1, 3 * i); console.log(sum);"###; let config = r###"{ "inline": true, "reduce_vars": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_t131b() { let src = r###"(function () { function thing() { return { a: 1 }; } function one() { return thing(); } function two() { var x = thing(); x.a = 2; x.b = 3; return x; } console.log(JSON.stringify(one()), JSON.stringify(two())); })();"###; let config = r###"{ "defaults": true, "passes": 2 }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_inline_2() { let src = r###"(function () { console.log(1); })(); (function (a) { console.log(a); })(2); (function (b) { var c = b; console.log(c); })(3);"###; let config = r###"{ "inline": 2, "side_effects": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2531_3() { let src = r###"function outer() { function inner(value) { function closure() { return value; } return function () { return closure(); }; } return inner("Hello"); } console.log("Greeting:", outer()());"###; let config = r###"{ "evaluate": true, "inline": true, "passes": 3, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_inline_3() { let src = r###"(function () { console.log(1); })(); (function (a) { console.log(a); })(2); (function (b) { var c = b; console.log(c); })(3);"###; let config = r###"{ "inline": 3, "side_effects": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2657() { let src = r###""use strict"; console.log( (function f() { return h; function g(b) { return b || b(); } function h(a) { g(a); return a; } })()(42) );"###; let config = r###"{ "inline": true, "reduce_vars": true, "sequences": true, "passes": 2, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_unsafe_apply_expansion_1() { let src = r###"console.log.apply(console, [1, ...[2, 3], 4]);"###; let config = r###"{ "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_3016_1() { let src = r###"var b = 1; do { (function (a) { return a[b]; var a; })(3); } while (0); console.log(b);"###; let config = r###"{ "inline": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2531_2() { let src = r###"function outer() { function inner(value) { function closure() { return value; } return function () { return closure(); }; } return inner("Hello"); } console.log("Greeting:", outer()());"###; let config = r###"{ "evaluate": true, "inline": true, "passes": 3, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_unsafe_call_expansion_2() { let src = r###"var values = [2, 3]; (function (...a) { console.log(...a); }.call(console, 1, ...values, 4));"###; let config = r###"{ "unsafe": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_issue_2783() { let src = r###"(function () { return g; function f(a) { var b = a.b; if (b) return b; return a; } function g(o, i) { while (i--) { console.log(f(o)); } } })()({ b: "PASS" }, 1);"###; let config = r###"{ "collapse_vars": true, "conditionals": true, "if_return": true, "inline": true, "reduce_vars": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_functions_unsafe_call_1() { let src = r###"(function (a, b) { console.log(a, b); }.call("foo", "bar")); (function (a, b) { console.log(this, a, b); }.call("foo", "bar"));"###; let config = r###"{ "inline": true, "passes": 2, "reduce_vars": true, "side_effects": true, "unsafe": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1466_different_variable_in_multiple_for_of() { let src = r###"var test = ["a", "b", "c"]; for (let tmp of test) { console.log(tmp); let dd; dd = ["e", "f", "g"]; for (let t of dd) { console.log(t); } }"###; let config = r###"{ "hoist_funs": true, "dead_code": true, "conditionals": true, "comparisons": true, "evaluate": true, "booleans": true, "loops": true, "unused": true, "keep_fargs": true, "if_return": true, "join_vars": true, "side_effects": true, "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1466_same_variable_in_multiple_for_of() { let src = r###"var test = ["a", "b", "c"]; for (let tmp of test) { console.log(tmp); let dd; dd = ["e", "f", "g"]; for (let tmp of dd) { console.log(tmp); } }"###; let config = r###"{ "hoist_funs": true, "dead_code": true, "conditionals": true, "comparisons": true, "evaluate": true, "booleans": true, "loops": true, "unused": true, "keep_fargs": true, "if_return": true, "join_vars": true, "side_effects": true, "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1466_same_variable_in_multiple_for_of_sequences_let() { let src = r###"var test = ["a", "b", "c"]; for (let tmp of test) { console.log(tmp); let dd; dd = ["e", "f", "g"]; for (let tmp of dd) { console.log(tmp); } }"###; let config = r###"{ "hoist_funs": true, "dead_code": true, "conditionals": true, "comparisons": true, "evaluate": true, "booleans": true, "loops": true, "unused": true, "keep_fargs": true, "if_return": true, "join_vars": true, "sequences": true, "side_effects": true, "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1466_same_variable_in_multiple_for_in_sequences_const() { let src = r###"var test = ["a", "b", "c"]; for (const tmp in test) { console.log(tmp); let dd; dd = ["e", "f", "g"]; for (const tmp in test) { console.log(tmp); } }"###; let config = r###"{ "hoist_funs": true, "dead_code": true, "conditionals": true, "comparisons": true, "evaluate": true, "booleans": true, "loops": true, "unused": false, "keep_fargs": true, "if_return": true, "join_vars": true, "sequences": true, "side_effects": true, "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1466_more_variable_in_multiple_for() { let src = r###"for (let a = 9, i = 0; i < 20; i += a) { let b = a++ + i; console.log(a, b, i); for (let k = b, m = b * b, i = 0; i < 10; i++) { console.log(a, b, m, k, i); } }"###; let config = r###"{ "hoist_funs": true, "dead_code": true, "conditionals": true, "comparisons": true, "evaluate": true, "booleans": true, "loops": true, "unused": false, "keep_fargs": true, "if_return": true, "join_vars": true, "side_effects": true, "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1466_different_variable_in_multiple_for_in() { let src = r###"var test = ["a", "b", "c"]; for (let tmp in test) { console.log(tmp); let dd; dd = ["e", "f", "g"]; for (let t in test) { console.log(t); } }"###; let config = r###"{ "hoist_funs": true, "dead_code": true, "conditionals": true, "comparisons": true, "evaluate": true, "booleans": true, "loops": true, "unused": false, "keep_fargs": true, "if_return": true, "join_vars": true, "side_effects": true, "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1466_same_variable_in_multiple_for_in() { let src = r###"var test = ["a", "b", "c"]; for (let tmp in test) { console.log(tmp); let dd; dd = ["e", "f", "g"]; for (let tmp in test) { console.log(tmp); } }"###; let config = r###"{ "hoist_funs": true, "dead_code": true, "conditionals": true, "comparisons": true, "evaluate": true, "booleans": true, "loops": true, "unused": false, "keep_fargs": true, "if_return": true, "join_vars": true, "side_effects": true, "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1466_same_variable_in_multiple_for_in_sequences_let() { let src = r###"var test = ["a", "b", "c"]; for (let tmp in test) { console.log(tmp); let dd; dd = ["e", "f", "g"]; for (let tmp in test) { console.log(tmp); } }"###; let config = r###"{ "hoist_funs": true, "dead_code": true, "conditionals": true, "comparisons": true, "evaluate": true, "booleans": true, "loops": true, "unused": false, "keep_fargs": true, "if_return": true, "join_vars": true, "sequences": true, "side_effects": true, "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_1466_same_variable_in_multiple_for_of_sequences_const() { let src = r###"var test = ["a", "b", "c"]; for (const tmp of test) { console.log(tmp); let dd; dd = ["e", "f", "g"]; for (const tmp of dd) { console.log(tmp); } }"###; let config = r###"{ "hoist_funs": true, "dead_code": true, "conditionals": true, "comparisons": true, "evaluate": true, "booleans": true, "loops": true, "unused": true, "keep_fargs": true, "if_return": true, "join_vars": true, "sequences": true, "side_effects": true, "collapse_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_747_dont_reuse_prop() { let src = r###""aaaaaaaaaabbbbb"; var obj = {}; obj.a = 123; obj.asd = 256; console.log(obj.a);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_issue_747_unmangleable_props_should_always_be_reserved() { let src = r###""aaaaaaaaaabbbbb"; var obj = {}; obj.asd = 256; obj.a = 123; console.log(obj.a);"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_loops_issue_2740_7() { let src = r###"let a = 9, b = 0; for (const a = 1; a < 3; ++b) break; console.log(a, b);"###; let config = r###"{ "dead_code": true, "loops": true }"###; run_exec_test(src, config, false); } #[test] fn terser_loops_issue_2740_8() { let src = r###"var a = 9, b = 0; for (const a = 1; a < 3; ++b) break; console.log(a, b);"###; let config = r###"{ "dead_code": true, "loops": true }"###; run_exec_test(src, config, false); } #[test] fn terser_loops_issue_2740_6() { let src = r###"const a = 9, b = 0; for (const a = 1; a < 3; ++b) break; console.log(a, b);"###; let config = r###"{ "dead_code": true, "loops": true }"###; run_exec_test(src, config, false); } #[test] fn terser_loops_issue_2740_3() { let src = r###"L1: for (var x = 0; x < 3; x++) { L2: for (var y = 0; y < 2; y++) { break L1; } } console.log(x, y);"###; let config = r###"{ "dead_code": true, "loops": true }"###; run_exec_test(src, config, false); } #[test] fn terser_loops_issue_2740_4() { let src = r###"L1: for (var x = 0; x < 3; x++) { L2: for (var y = 0; y < 2; y++) { break L2; } } console.log(x, y);"###; let config = r###"{ "dead_code": true, "loops": true, "passes": 2 }"###; run_exec_test(src, config, false); } #[test] fn terser_loops_issue_2740_5() { let src = r###"L1: for (var x = 0; x < 3; x++) { break L1; L2: for (var y = 0; y < 2; y++) { break L2; } } console.log(x, y);"###; let config = r###"{ "dead_code": true, "loops": true, "passes": 2 }"###; run_exec_test(src, config, false); } #[test] fn terser_rename_function_iife_catch() { let src = r###"function f(n) { !(function () { try { throw 0; } catch (n) { var a = 1; console.log(n, a); } })(); } f();"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_rename_mangle_catch_var() { let src = r###"var a = "FAIL"; try { throw 1; } catch (args) { var a = "PASS"; } console.log(a);"###; let config = r###"{ "ie8": false, "toplevel": false }"###; run_exec_test(src, config, false); } #[test] fn terser_negate_iife_issue_1254_negate_iife_true() { let src = r###"(function () { return function () { console.log("test"); }; })()();"###; let config = r###"{ "negate_iife": true }"###; run_exec_test(src, config, false); } #[test] fn terser_try_catch_catch_destructuring_with_sequence() { let src = r###"try { throw {}; } catch ({ xCover = (0, function () { }) }) { console.log(typeof xCover) }"###; let config = r###"{}"###; run_exec_test(src, config, false); } #[test] fn terser_issue_281_pure_annotation_1() { let src = r###"(function () { console.log("hello"); })();"###; let config = r###"{ "inline": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_281_keep_fargs() { let src = r###"var a = 1; !(function (a_1) { a++; })(a++ + (a && a.var)); console.log(a);"###; let config = r###"{ "collapse_vars": true, "inline": true, "keep_fargs": true, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_281_drop_fargs() { let src = r###"var a = 1; !(function (a_1) { a++; })(a++ + (a && a.var)); console.log(a);"###; let config = r###"{ "collapse_vars": true, "inline": true, "keep_fargs": false, "side_effects": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn terser_issue_281_pure_annotation_2() { let src = r###"(function (n) { console.log("hello", n); })(42);"###; let config = r###"{ "collapse_vars": true, "inline": true, "side_effects": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arguments_duplicate_parameter_with_arguments() { let src = r###"(function (a, a) { console.log((a = "foo"), arguments[0]); })("baz", "Bar");"###; let config = r###"{ "arguments": true, "defaults": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arguments_destructuring_1() { let src = r###"(function (a, { d: d }) { console.log((a = "foo"), arguments[0]); })("baz", { d: "Bar" });"###; let config = r###"{ "arguments": true, "defaults": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arguments_destructuring_2() { let src = r###"(function ({ d: d }, a) { console.log((a = "foo"), arguments[0].d); })({ d: "Bar" }, "baz");"###; let config = r###"{ "arguments": true, "defaults": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arguments_modified_strict() { let src = r###""use strict"; (function (a, b) { var c = arguments[0]; var d = arguments[1]; var a = "foo"; b++; arguments[0] = "moo"; arguments[1] *= 2; console.log(a, b, c, d, arguments[0], arguments[1]); })("bar", 42);"###; let config = r###"{ "arguments": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arguments_replace_index() { let src = r###"var arguments = []; console.log(arguments[0]); (function () { console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42); (function (a, b) { console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42); (function (arguments) { console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42); (function () { var arguments; console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42);"###; let config = r###"{ "arguments": true, "evaluate": true, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arguments_modified() { let src = r###"(function (a, b) { var c = arguments[0]; var d = arguments[1]; var a = "foo"; b++; arguments[0] = "moo"; arguments[1] *= 2; console.log(a, b, c, d, arguments[0], arguments[1]); })("bar", 42);"###; let config = r###"{ "arguments": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arguments_replace_index_strict() { let src = r###""use strict"; (function () { console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42); (function (a, b) { console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42);"###; let config = r###"{ "arguments": true, "evaluate": true, "properties": true, "reduce_vars": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arguments_issue_687() { let src = r###"function shouldBePure() { return arguments.length; } console.log(shouldBePure())"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn terser_arguments_replace_index_keep_fargs() { let src = r###"var arguments = []; console.log(arguments[0]); (function () { console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42); (function (a, b) { console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42); (function (arguments) { console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42); (function () { var arguments; console.log(arguments[1], arguments["1"], arguments["foo"]); })("bar", 42);"###; let config = r###"{ "arguments": true, "evaluate": true, "keep_fargs": false, "properties": true }"###; run_exec_test(src, config, false); } #[test] fn terser_typeof_issue_2728_3() { let src = r###"(function () { function arguments() {} console.log(typeof arguments); })();"###; let config = r###"{ "evaluate": true, "reduce_vars": true, "typeofs": true }"###; run_exec_test(src, config, false); } #[test] fn terser_typeof_issue_2728_4() { let src = r###"function arguments() {} console.log(typeof arguments);"###; let config = r###"{ "evaluate": true, "reduce_vars": true, "toplevel": true, "typeofs": true }"###; run_exec_test(src, config, false); } #[test] fn terser_typeof_typeof_defun_1() { let src = r###"function f() { console.log("YES"); } function g() { h = 42; console.log("NOPE"); } function h() { console.log("YUP"); } g = 42; "function" == typeof f && f(); "function" == typeof g && g(); "function" == typeof h && h();"###; let config = r###"{ "evaluate": true, "inline": true, "passes": 2, "reduce_vars": true, "side_effects": true, "toplevel": true, "typeofs": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_pure_funcs_issue_3065_4() { let src = r###"var debug = function (msg) { console.log(msg); }; debug( (function () { console.log("PASS"); return "FAIL"; })() );"###; let config = r###"{ "pure_funcs": ["debug"], "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] #[ignore] fn terser_pure_funcs_issue_3065_3() { let src = r###"function debug(msg) { console.log(msg); } debug( (function () { console.log("PASS"); return "FAIL"; })() );"###; let config = r###"{ "pure_funcs": ["debug"], "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true }"###; run_exec_test(src, config, false); } #[test] fn issues_vercel_ms_1() { let src = r###"const s = 1000; const m = s * 60; const h = m * 60; const d = h * 24; const w = d * 7; const y = d * 365.25; function ms(value, options) { try { if (typeof value === "string" && value.length > 0) { return parse(value); } else if (typeof value === "number" && isFinite(value)) { return options?.long ? fmtLong(value) : fmtShort(value); } throw new Error("Value is not a string or number."); } catch (error) { const message = isError(error) ? `${error.message}. value=${JSON.stringify(value)}` : "An unknown error has occured."; throw new Error(message); } } function parse(str) { str = String(str); if (str.length > 100) { throw new Error("Value exceeds the maximum length of 100 characters."); } const match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(str); if (!match) { return NaN; } const n = parseFloat(match[1]); const type = (match[2] || "ms").toLowerCase(); switch (type) { case "years": case "year": case "yrs": case "yr": case "y": return n * y; case "weeks": case "week": case "w": return n * w; case "days": case "day": case "d": return n * d; case "hours": case "hour": case "hrs": case "hr": case "h": return n * h; case "minutes": case "minute": case "mins": case "min": case "m": return n * m; case "seconds": case "second": case "secs": case "sec": case "s": return n * s; case "milliseconds": case "millisecond": case "msecs": case "msec": case "ms": return n; default: throw new Error(`The unit ${type} was matched, but no matching case exists.`); } } function fmtShort(ms) { const msAbs = Math.abs(ms); if (msAbs >= d) { return `${Math.round(ms / d)}d`; } if (msAbs >= h) { return `${Math.round(ms / h)}h`; } if (msAbs >= m) { return `${Math.round(ms / m)}m`; } if (msAbs >= s) { return `${Math.round(ms / s)}s`; } return `${ms}ms`; } function fmtLong(ms) { const msAbs = Math.abs(ms); if (msAbs >= d) { return plural(ms, msAbs, d, "day"); } if (msAbs >= h) { return plural(ms, msAbs, h, "hour"); } if (msAbs >= m) { return plural(ms, msAbs, m, "minute"); } if (msAbs >= s) { return plural(ms, msAbs, s, "second"); } return `${ms} ms`; } function plural(ms, msAbs, n, name) { const isPlural = msAbs >= n * 1.5; return `${Math.round(ms / n)} ${name}${isPlural ? "s" : ""}`; } function isError(error) { return typeof error === "object" && error !== null && "message" in error; } console.log(ms(123)) console.log(ms('123day')) console.log(ms(12321341234217)) console.log(ms(12321341234217)) console.log(ms(12321341234217)) console.log(ms(12321341234217)) console.log(ms(12321341234217)) console.log(ms(12321341234217)) console.log(ms(12321341234217))"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn issues_2011_1() { let src = r###"class ClassA { constructor() { console.log('Class A'); } } const cls = class ClassB { static MyA = ClassA; constructor() { console.log('Claas B'); } it() { console.log('method it - start'); this.bb = new ClassB.MyA(); console.log('method it - end'); } } new cls().it();"###; let config = r###"{ "defaults": true }"###; run_exec_test(src, config, false); } #[test] fn issues_2011_2() { let src = r###"function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; } function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } var ClassA = function ClassA() { "use strict"; _classCallCheck(this, ClassA); console.log('Class A'); }; var cls = function () { var ClassB = /*#__PURE__*/ function () { "use strict"; function ClassB() { _classCallCheck(this, ClassB); console.log('Claas B'); } _createClass(ClassB, [ { key: "it", value: function it() { console.log('method it - start'); this.bb = new ClassB.MyA(); console.log('method it - end'); } } ]); return ClassB; }(); _defineProperty(ClassB, "MyA", ClassA); return ClassB; }(); new cls().it();"###; let config = r###"{ "defaults": true }"###; run_exec_test(src, config, false); } #[test] fn murmur2_1() { let src = r###"function murmur2(str) { // 'm' and 'r' are mixing constants generated offline. // They're not really 'magic', they just happen to work well. // const m = 0x5bd1e995; // const r = 24; // Initialize the hash var h = 0; // Mix 4 bytes at a time into the hash var k, i = 0, len = str.length; for (; len >= 4; ++i, len -= 4) { k = str.charCodeAt(i) & 0xff | (str.charCodeAt(++i) & 0xff) << 8 | (str.charCodeAt(++i) & 0xff) << 16 | (str.charCodeAt(++i) & 0xff) << 24; k = /* Math.imul(k, m): */ (k & 0xffff) * 0x5bd1e995 + ((k >>> 16) * 0xe995 << 16); k ^= /* k >>> r: */ k >>> 24; h = /* Math.imul(k, m): */ (k & 0xffff) * 0x5bd1e995 + ((k >>> 16) * 0xe995 << 16) ^ /* Math.imul(h, m): */ (h & 0xffff) * 0x5bd1e995 + ((h >>> 16) * 0xe995 << 16); } // Handle the last few bytes of the input array switch (len) { case 3: h ^= (str.charCodeAt(i + 2) & 0xff) << 16; case 2: h ^= (str.charCodeAt(i + 1) & 0xff) << 8; case 1: h ^= str.charCodeAt(i) & 0xff; h = /* Math.imul(h, m): */ (h & 0xffff) * 0x5bd1e995 + ((h >>> 16) * 0xe995 << 16); } // Do a few final mixes of the hash to ensure the last few // bytes are well-incorporated. h ^= h >>> 13; h = /* Math.imul(h, m): */ (h & 0xffff) * 0x5bd1e995 + ((h >>> 16) * 0xe995 << 16); return ((h ^ h >>> 15) >>> 0).toString(36); } console.log(murmur2("123421334")) console.log(murmur2("123asd ;nv")) console.log(murmur2("1va1ns`klj"))"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn murmur2_reduced() { let src = r###"function murmur2(str) { var h = 0; var k, i = 0, len = str.length; for (; len >= 4; ++i, len -= 4) { k = 255 & str.charCodeAt(i) | (255 & str.charCodeAt(++i)) << 8 | (255 & str.charCodeAt(++i)) << 16 | (255 & str.charCodeAt(++i)) << 24; k = (65535 & k) * 1540483477 + ((k >>> 16) * 59797 << 16); k ^= k >>> 24; h = (65535 & k) * 1540483477 + ((k >>> 16) * 59797 << 16) ^ (65535 & h) * 1540483477 + ((h >>> 16) * 59797 << 16); } switch (len) { case 3: h ^= (255 & str.charCodeAt(i + 2)) << 16; case 2: h ^= (255 & str.charCodeAt(i + 1)) << 8; case 1: h ^= 255 & str.charCodeAt(i); h = (65535 & h) * 1540483477 + ((h >>> 16) * 59797 << 16); } h ^= h >>> 13; h = (65535 & h) * 1540483477 + ((h >>> 16) * 59797 << 16); return ((h ^ h >>> 15) >>> 0).toString(36); } console.log(murmur2("123421334")); console.log(murmur2("123asd ;nv")); console.log(murmur2("1va1ns`klj"));"###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn plotly_1() { let src = r###" function log2(v) { var r, shift; r = (v > 0xFFFF) << 4; v >>>= r; shift = (v > 0xFF ) << 3; v >>>= shift; r |= shift; shift = (v > 0xF ) << 2; v >>>= shift; r |= shift; shift = (v > 0x3 ) << 1; v >>>= shift; r |= shift; return r | (v >> 1); } console.log(log2(65536)) console.log(log2(2)) console.log(log2(4)) console.log(log2(8)) "###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn internal_1() { let src = r###" function H (x) { return function (y, z) { return x._ + y + z } } function P () { var a = 0 a = { _: 1 } a.calc = H(a) return a } console.log(P().calc(1, 1)) "###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn direct_eval_1() { let src = r###" const obj = { 1: function () { const foo = 1; return { test: function (s) { return eval(s) } } }, 2: function foo(mod1) { console.log(mod1.test('foo')) } }; obj[2](obj[1]()); "###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn indirect_eval_1() { let src = r###" const obj = { 1: function () { const foo = 1; return { test: function (s) { const e = eval; return e(s) } } }, 2: function foo(mod1) { let success = false; try { mod1.test('foo') } catch (e) { success = true; console.log('PASS'); } if (!success) { throw new Error('indirect eval should not be direct eval'); } } }; obj[2](obj[1]()); "###; let config = r###"{ "defaults": true, "toplevel": true }"###; run_exec_test(src, config, false); } #[test] fn try_catch_1() { let src = r###" var a = "FAIL"; try { throw 1; } catch (args) { a = "PASS"; } console.log(a); "###; run_default_exec_test(src); } #[test] fn try_catch_2() { let src = r###" var a = "PASS"; try { throw "FAIL1"; } catch (a) { var a = "FAIL2"; } console.log(a); "###; run_default_exec_test(src); } #[test] fn try_catch_3() { let src = r###" var a = "FAIL"; try { throw 1; } catch (args) { var a = "PASS"; } console.log(a); "###; run_default_exec_test(src); } #[test] fn try_catch_4() { let src = r###" "aaaaaaaa"; var a = 1, b = "FAIL"; try { throw 1; } catch (c) { try { throw 0; } catch (a) { if (c) b = "PASS"; } } console.log(b); "###; run_default_exec_test(src); } #[test] fn try_catch_5() { let src = r###" var a = "PASS"; try { throw "FAIL1"; } catch (a) { var a = "FAIL2"; } console.log(a); "###; run_default_exec_test(src); } #[test] fn issue_4444_1() { let src = r###" const test = () => { let a = 0; let b = 0; let c = [1, 2, 3, 4, 5].map((i) => { a += i; b += i; return i; }); return [a, b, c]; }; const [a, b, c] = test(); console.log("test", a, b, c); "###; let config = r###" { "arguments": false, "arrows": false, "booleans": true, "booleans_as_integers": false, "collapse_vars": true, "comparisons": true, "computed_props": false, "conditionals": false, "dead_code": false, "directives": false, "drop_console": false, "drop_debugger": true, "evaluate": false, "expression": false, "hoist_funs": false, "hoist_props": false, "hoist_vars": false, "if_return": true, "join_vars": false, "keep_classnames": false, "keep_fargs": true, "keep_fnames": false, "keep_infinity": false, "loops": true, "negate_iife": false, "properties": true, "reduce_funcs": false, "reduce_vars": false, "side_effects": true, "switches": false, "typeofs": false, "unsafe": false, "unsafe_arrows": false, "unsafe_comps": false, "unsafe_Function": false, "unsafe_math": false, "unsafe_symbols": false, "unsafe_methods": false, "unsafe_proto": false, "unsafe_regexp": false, "unsafe_undefined": false, "unused": true } "###; run_exec_test(src, config, false); } #[test] fn terser_insane_1() { let src = r###" function f() { a--; try { a++; x(); } catch (a) { if (a) var a; var a = 10; } console.log(a) } f(); "###; let config = r###" { "conditionals": true, "negate_iife": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true } "###; run_exec_test(src, config, false); } #[test] fn terser_insane_2() { let src = r###" function f() { console.log(a) a--; console.log(a) try { console.log(a) a++; console.log(a) x(); } catch (a) { if (a) var a; var a = 10; } console.log(a) } f(); "###; let config = r###" { "conditionals": true, "negate_iife": true, "passes": 2, "reduce_funcs": true, "reduce_vars": true, "side_effects": true, "toplevel": true, "unused": true } "###; run_exec_test(src, config, false); } #[test] fn issue_4788_1() { let src = r###" let id = 0; const obj = { get foo() { console.log("foo", id++); }, }; obj.foo; const obj2 = { ...obj, }; obj2.foo; const obj3 = { ...obj, foo: 1, }; obj3.foo; "###; run_default_exec_test(src); } #[test] fn issue_5645() { let src = r###" const t = { 1: 'a', 2: 'b' } function g(arg) { if (t[arg] === undefined) { var arg = 2 } return t[arg] } console.log(g(1)) "###; let config = r###" { "arguments": false, "arrows": false, "booleans": false, "booleans_as_integers": false, "collapse_vars": false, "comparisons": false, "computed_props": false, "conditionals": false, "dead_code": false, "directives": false, "drop_console": false, "drop_debugger": false, "evaluate": false, "expression": false, "hoist_funs": false, "hoist_props": false, "hoist_vars": false, "if_return": false, "join_vars": false, "keep_classnames": false, "keep_fargs": false, "keep_fnames": false, "keep_infinity": false, "loops": false, "negate_iife": false, "properties": false, "reduce_funcs": false, "reduce_vars": false, "side_effects": false, "switches": false, "typeofs": false, "unsafe": false, "unsafe_arrows": false, "unsafe_comps": false, "unsafe_Function": false, "unsafe_math": false, "unsafe_symbols": false, "unsafe_methods": false, "unsafe_proto": false, "unsafe_regexp": false, "unsafe_undefined": false, "unused": false, "const_to_let": false, "pristine_globals": false } "###; run_exec_test(src, config, false); } #[test] fn issue_5799() { let src = r###" console.log(`\u2014`) "###; run_default_exec_test(src); } #[test] fn issue_5914() { let src = r###" class Test { constructor(config) { const that = this; this.config = config; this.options = { get config() { return that.config; }, }; } } const instance = new Test(42); console.log(instance.options.config); "###; let config = r###" { "arguments": false, "arrows": true, "booleans": true, "booleans_as_integers": false, "collapse_vars": true, "comparisons": true, "computed_props": true, "conditionals": true, "dead_code": true, "directives": true, "drop_console": false, "drop_debugger": true, "evaluate": true, "expression": false, "hoist_funs": false, "hoist_props": true, "hoist_vars": false, "if_return": true, "join_vars": true, "keep_classnames": false, "keep_fargs": true, "keep_fnames": false, "keep_infinity": false, "loops": true, "negate_iife": true, "properties": true, "reduce_funcs": false, "reduce_vars": false, "side_effects": true, "switches": true, "typeofs": true, "unsafe": false, "unsafe_arrows": false, "unsafe_comps": false, "unsafe_Function": false, "unsafe_math": false, "unsafe_symbols": false, "unsafe_methods": false, "unsafe_proto": false, "unsafe_regexp": false, "unsafe_undefined": false, "unused": true, "const_to_let": true, "pristine_globals": true } "###; run_exec_test(src, config, false); } #[test] fn feedback_regex_range() { let src = r###" const rtlRegEx = new RegExp( /* eslint-disable prettier/prettier */ '[' + String.fromCharCode(0x00591) + '-' + String.fromCharCode(0x008ff) + String.fromCharCode(0x0fb1d) + '-' + String.fromCharCode(0x0fdff) + String.fromCharCode(0x0fe70) + '-' + String.fromCharCode(0x0fefc) + String.fromCharCode(0x10800) + '-' + String.fromCharCode(0x10fff) + String.fromCharCode(0x1e800) + '-' + String.fromCharCode(0x1efff) + ']' /* eslint-enable prettier/prettier */ ); console.log('PASS') "###; run_default_exec_test(src); } #[test] fn issue_6004() { run_default_exec_test( r###" const props = {'a': 1, 'b': 2}; const isBox = 'a' in props || 'b' in props; for (const p in props) { delete props[p]; } console.log(isBox); "###, ); } #[test] fn issue_6047_1() { run_default_exec_test( r###" let foo = () => 1; const obj = { get 0() { foo = () => 2; return 40; }, }; console.log(obj) var c = obj[0]; console.log(foo(c)); "###, ); } #[test] fn issue_6047_2() { run_default_exec_test( r###" let foo = () => 1; const obj = new Proxy({}, { get () { foo = () => 2; return 40; }, }); console.log(obj) var c = obj[0]; console.log(foo(c)); "###, ); } #[test] fn issue_6039_1() { run_default_exec_test( r###" function foo() { let walker = 0; let arr = []; function bar(defaultValue) { const myIndex = walker; walker += 1; console.log({ arr }); if (arr.length < myIndex + 1) { arr[myIndex] = defaultValue; } } return bar; } const bar = foo(); bar(null); bar(null); bar(null); bar(null); bar(null); "###, ); } #[test] fn issue_6039_2() { run_default_exec_test( r###" var foo = function foo() { var walker = 0; var arr = []; function bar(defaultValue) { var myIndex = walker; walker += 1; console.log({ arr: arr }); if (arr.length < myIndex + 1) { arr[myIndex] = defaultValue; } } return bar; }; var bar = foo(); bar(null); bar(null); bar(null); bar(null); bar(null); "###, ); } #[test] fn issue_6217_1() { run_exec_test( r###" var foo = function foo() { var walker = 0; var arr = []; function bar(defaultValue) { var myIndex = walker; walker += 1; console.log({ arr: arr }); if (arr.length < myIndex + 1) { arr[myIndex] = defaultValue; } } return bar; }; var bar = foo(); bar(null); bar(null); bar(null); bar(null); bar(null); "###, r###" { "arguments": false, "arrows": false, "booleans": false, "booleans_as_integers": false, "collapse_vars": true, "comparisons": false, "computed_props": false, "conditionals": false, "dead_code": false, "directives": false, "drop_console": false, "drop_debugger": false, "evaluate": false, "expression": false, "hoist_funs": false, "hoist_props": false, "hoist_vars": false, "if_return": false, "join_vars": false, "keep_classnames": false, "keep_fargs": false, "keep_fnames": false, "keep_infinity": false, "loops": false, "negate_iife": false, "properties": false, "reduce_funcs": false, "reduce_vars": false, "side_effects": false, "switches": false, "typeofs": false, "unsafe": false, "unsafe_arrows": false, "unsafe_comps": false, "unsafe_Function": false, "unsafe_math": false, "unsafe_symbols": false, "unsafe_methods": false, "unsafe_proto": false, "unsafe_regexp": false, "unsafe_undefined": false, "unused": false, "const_to_let": false, "pristine_globals": false } "###, false, ); } #[test] fn issue_6279_1() { run_default_exec_test( r###" function run(str, r) { let m while(m = r.exec(str)) { console.log(m) } } run('abcda', /a/g) "###, ); } #[test] fn issue_6279_2() { run_default_exec_test( r###" const r = new RegExp('a', 'g'); function run(str, r) { let m while (m = r.exec(str)) { console.log(m) } } run('abcda', r) "###, ); } #[test] fn issue_6463_1() { run_default_exec_test( r###" var foo_1 = foo; function foo() { console.log("foo"); } foo_1(); foo_1(); "###, ); } #[test] fn issue_6528() { run_default_exec_test( r###" const foo = { "+1": 1, "2": 2, "-3": 3, } console.log(foo[1]); console.log(foo["+1"]); console.log(foo["2"]); console.log(foo[2]); console.log(foo[-3]); console.log(foo["-3"]); "###, ) } #[test] fn issue_6641() { run_default_exec_test( r###" const iota = (i => () => 1 << ++i)(-1); const a = iota(), b = iota(); console.log(a, b); "###, ) } #[test] fn issue_6728() { run_default_exec_test( r###" async function foo() { if (undefined_var_1) { let replace; if (undefined_var_2) { replace = 1; } else { replace = 2; } await a({ replace }) } } console.log('PASS') "###, ) } #[test] fn issue_6750_1() { run_default_exec_test( r###" let current_component; function set_current_component(component) { current_component = component; } function f(component) { const parent = current_component set_current_component(component) parent.m() } const obj = { m() { console.log("call m()") } } try { f(obj) } catch (e) { console.log('PASS') } "###, ) } #[test] fn issue_6750_2() { run_exec_test( r###" let current_component; function set_current_component(component) { current_component = component; } function f(component) { const parent = current_component set_current_component(component) parent.m() } const obj = { m() { console.log("call m()") } } try { f(obj) } catch (e) { console.log('PASS') } "###, r###"{ "defaults": true, "sequences": false }"###, false, ) } #[test] fn issue_6899_1() { run_exec_test( r###" // this the original code, just for comparison function Limit(min, max) { var length = Math.abs(min - max); function reachedMin(n) { return n < min; } function reachedMax(n) { return n > max; } function reachedAny(n) { return reachedMin(n) || reachedMax(n); } function constrain(n) { if (!reachedAny(n)) return n; return reachedMin(n) ? min : max; } function removeOffset(n) { if (!length) return n; return n - length * Math.ceil((n - max) / length); } var self = { length: length, max: max, min: min, constrain: constrain, reachedAny: reachedAny, reachedMax: reachedMax, reachedMin: reachedMin, removeOffset: removeOffset }; return self; } console.log("The result should be 0. And it is:", Limit(0,3).constrain(-1)) "###, r###" { "arguments": false, "arrows": true, "booleans": true, "booleans_as_integers": false, "collapse_vars": true, "comparisons": true, "computed_props": true, "conditionals": true, "dead_code": true, "directives": true, "drop_console": false, "drop_debugger": true, "evaluate": true, "expression": false, "hoist_funs": false, "hoist_props": true, "hoist_vars": false, "if_return": true, "join_vars": true, "keep_classnames": false, "keep_fargs": true, "keep_fnames": false, "keep_infinity": false, "loops": true, "negate_iife": true, "properties": true, "reduce_funcs": false, "reduce_vars": false, "side_effects": true, "switches": true, "typeofs": true, "unsafe": false, "unsafe_arrows": false, "unsafe_comps": false, "unsafe_Function": false, "unsafe_math": false, "unsafe_symbols": false, "unsafe_methods": false, "unsafe_proto": false, "unsafe_regexp": false, "unsafe_undefined": false, "unused": true, "const_to_let": true, "pristine_globals": true } "###, false, ) } #[test] fn issue_6899_2() { run_default_exec_test( r###" // this the original code, just for comparison function Limit(min, max) { var length = Math.abs(min - max); function reachedMin(n) { return n < min; } function reachedMax(n) { return n > max; } function reachedAny(n) { return reachedMin(n) || reachedMax(n); } function constrain(n) { if (!reachedAny(n)) return n; return reachedMin(n) ? min : max; } function removeOffset(n) { if (!length) return n; return n - length * Math.ceil((n - max) / length); } var self = { length: length, max: max, min: min, constrain: constrain, reachedAny: reachedAny, reachedMax: reachedMax, reachedMin: reachedMin, removeOffset: removeOffset }; return self; } console.log("The result should be 0. And it is:", Limit(0,3).constrain(-1)) "###, ); } #[test] fn issue_6899_3() { run_default_exec_test( r###" console.log("The result should be 0. And it is:", function(n, e) { var r = Math.abs(n - e); function t(e) { return e < n } function u(n) { return n > e } function c(n) { return t(n) || u(n) } return { length: r, max: e, min: n, constrain: function(r) { return c(r) ? t(r) ? n : e : r }, reachedAny: c, reachedMax: u, reachedMin: t, removeOffset: function(n) { return r ? n - r * Math.ceil((n - e) / r) : n } } }(0, 3).constrain(-1)); "###, ); } #[test] fn issue_6899_4() { run_exec_test( r###" console.log("The result should be 0. And it is:", function(n, e) { var r = Math.abs(n - e); function t(e) { return e < n } function u(n) { return n > e } function c(n) { return t(n) || u(n) } return { length: r, max: e, min: n, constrain: function(r) { return c(r) ? t(r) ? n : e : r }, reachedAny: c, reachedMax: u, reachedMin: t, removeOffset: function(n) { return r ? n - r * Math.ceil((n - e) / r) : n } } }(0, 3).constrain(-1)); "###, r###" { "inline": true, "passes": 2 } "###, false, ); } #[test] fn issue_6899_5() { run_exec_test( r###" console.log("The result should be 0. And it is:", function(n, e) { var r = Math.abs(n - e); function t(e) { return e < n } function u(n) { return n > e } function c(n) { return t(n) || u(n) } return { constrain: function(r) { return c(r) ? (t(r) ? n : e) : r }, } }(0, 3).constrain(-1)); "###, r###" { "inline": true, "passes": 2 } "###, false, ); } #[test] fn issue_6903_1() { run_default_exec_test( r###" function test(a, b) { let wrapper = (e) => e wrapper = (e) => (["not", e]) if (a) { return wrapper(b) } return wrapper(1) } console.log(test(true, "bad")) "###, ); } #[test] fn issue_6903_2() { run_exec_test( r###" function test(a, b) { let wrapper = (e) => e wrapper = (e) => (["not", e]) if (a) { return wrapper(b) } return wrapper(1) } console.log(test(true, "bad")) "###, r###" { "if_return": true, "join_vars": true, "side_effects": true, "conditionals": true }"###, false, ); } #[test] fn issue_6903_3() { run_exec_test( r###" function test(a, b) { let wrapper = (e)=>e; return ((wrapper = (e)=>[ "not", e ]), a) ? wrapper(b) : wrapper(1); } console.log(test(true, "bad")); "###, r###" { "conditionals": true }"###, false, ); } #[test] fn issue_6914_1() { run_default_exec_test( r###" console.log(doSomething()) function doSomething() { return fabricateEvent() } function fabricateEvent() { let def = createEventDef() return { def, ui: compileEventUi(def), } } function compileEventUi(def) { let uis = [] uis.push(def.ui) return uis } function createEventDef() { return { id: 'fakeId', ui: 'something' } } "###, ); } #[test] fn issue_6914_2() { run_exec_test( r###" console.log(doSomething()) function doSomething() { return fabricateEvent() } function fabricateEvent() { let def = createEventDef() return { def, ui: compileEventUi(def), } } function compileEventUi(def) { let uis = [] uis.push(def.ui) return uis } function createEventDef() { return { id: 'fakeId', ui: 'something' } } "###, r###" { "inline": true, "toplevel": true } "###, false, ); } #[test] fn issue_6914_3() { run_exec_test( r###" console.log(function() { return function() { let def = function() { return { id: 'fakeId', ui: 'something' }; }(); return { def, ui: function(def) { let uis = []; uis.push(def.ui); return uis; }(def) }; }(); }()); "###, r###" { "inline": true, "toplevel": true } "###, false, ); }