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8074c72ce9
swc_ecma_transforms_base: - `hygiene`: Considering scoping of `var`. - `hygiene`: Avoid creating too many `JsWord` by caching index.
1748 lines
36 KiB
Rust
1748 lines
36 KiB
Rust
use swc_common::chain;
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use swc_ecma_parser::Syntax;
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use swc_ecma_transforms_base::resolver::resolver;
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use swc_ecma_transforms_compat::{
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es2015::{arrow, block_scoping, classes, destructuring, parameters, spread},
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es2017::async_to_generator,
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};
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use swc_ecma_transforms_testing::{test, test_exec};
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use swc_ecma_visit::Fold;
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fn syntax() -> Syntax {
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Default::default()
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}
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fn tr() -> impl Fold {
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chain!(
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resolver(),
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parameters(),
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destructuring(destructuring::Config { loose: false }),
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block_scoping(),
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)
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}
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test!(
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syntax(),
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|_| tr(),
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issue_254,
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"export const someFunction = (update = false, action = {}) => {}",
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"
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export var someFunction = (param, param1)=>{
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var update = param === void 0 ? false : param, action = param1 === void 0 ? {} : param1;
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};
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"
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);
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test!(
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syntax(),
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|_| tr(),
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issue_227,
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"export default function fn1(...args) {
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fn2(...args);
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}",
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"
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export default function fn1() {
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for(var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++){
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args[_key] = arguments[_key];
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}
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fn2(...args);
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}
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"
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);
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test!(
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syntax(),
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|_| tr(),
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issue_169,
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r#"
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class Foo {
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func(a, b = Date.now()) {
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return {a};
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}
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}
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"#,
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r#"
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class Foo{
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func(a, param) {
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var b = param === void 0 ? Date.now() : param
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return {
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a
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};
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}
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}"#
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);
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test!(
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syntax(),
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|_| tr(),
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babel_6057_simple,
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r#"const a = 'bar';
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function foo(...a) {
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return a;
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}"#,
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r#"var a = 'bar';
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function foo() {
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for(var _len = arguments.length, a1 = new Array(_len), _key = 0; _key < _len; _key++){
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a1[_key] = arguments[_key];
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}
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return a1;
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}"#
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);
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test!(
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syntax(),
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|_| tr(),
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default_before_last,
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r#"function foo(a = "foo", b) {}"#,
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r#"function foo(param, b) {
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var a = param === void 0 ? 'foo' : param;
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}"#
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);
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test_exec!(
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syntax(),
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|_| tr(),
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default_destructuring,
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r#"function required(msg) {
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throw new Error(msg);
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}
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function sum(
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{ arr = required('arr is required') } = { arr: arr = [] },
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length = arr.length
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) {
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let i = 0;
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let acc = 0;
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for (let item of arr) {
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if (i >= length) return acc;
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acc += item;
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i++;
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}
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return acc;
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}
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expect(sum({arr:[1,2]})).toBe(3);"#
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);
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test_exec!(
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syntax(),
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|_| tr(),
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default_earlier_params,
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r#"function f(a, b = a, c = b) { return c; }
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expect(3).toBe(f(3));"#
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);
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test!(
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ignore,
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syntax(),
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|_| tr(),
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default_eval,
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r#"let x = "outside";
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function outer(a = () => eval("x")) {
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let x = "inside";
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return a();
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}
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outer();"#,
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r#"var x = "outside";
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function outer() {
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var a = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : function () {
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return eval("x");
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};
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return function () {
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var x = "inside";
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return a();
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}();
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}
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outer();"#
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);
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test_exec!(
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syntax(),
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|_| tr(),
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default_iife_1128,
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r#"const bar = true;
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function foo(a = bar, ...b) {
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const bar = false;
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expect(b[0]).toBe(2);
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expect(b[1]).toBe(3);
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}
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foo(1, 2, 3);"#
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);
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test!(
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syntax(),
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|t| chain!(classes(Some(t.comments.clone())), tr()),
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default_iife_4253,
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r#"class Ref {
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constructor(id = ++Ref.nextID) {
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this.id = id
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}
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}
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Ref.nextID = 0"#,
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r#"var Ref = function Ref(param) {
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'use strict';
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var id = param === void 0 ? ++Ref.nextID : param;
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_classCallCheck(this, Ref);
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this.id = id;
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};
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Ref.nextID = 0;"#
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);
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test_exec!(
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ignore,
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syntax(),
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// Stage0
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|_| tr(),
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default_iife_4253_exec,
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r#"class Ref {
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static nextId = 0
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constructor(id = ++Ref.nextId, n = id) {
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this.id = n
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}
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}
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expect(new Ref().id).toBe(1);
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expect(new Ref().id).toBe(2);"#
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);
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test!(
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syntax(),
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|t| chain!(classes(Some(t.comments.clone())), tr()),
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default_iife_self,
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r#"class Ref {
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constructor(ref = Ref) {
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this.ref = ref
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}
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}
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class X {
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constructor(x = foo) {
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this.x = x
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}
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}"#,
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r#"var Ref = function Ref(param) {
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'use strict';
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var ref = param === void 0 ? Ref : param;
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_classCallCheck(this, Ref);
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this.ref = ref;
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}
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var X = function X(param) {
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'use strict';
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var x = param === void 0 ? foo : param;
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_classCallCheck(this, X);
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this.x = x;
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};
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"#
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);
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test_exec!(
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syntax(),
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|_| tr(),
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default_iife_self_exec,
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r#"class Ref {
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constructor(ref = Ref) {
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this.ref = ref
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}
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}
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expect(new Ref().ref).toBe(Ref);"#
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);
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test!(
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syntax(),
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|_| tr(),
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default_multiple,
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r#"var t = function (e = "foo", f = 5) {
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return e + " bar " + f;
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};
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var a = function (e, f = 5) {
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return e + " bar " + f;
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};"#,
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"var t = function(param, param1) {
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var e = param === void 0 ? 'foo' : param, f = param1 === void 0 ? 5 : param1;
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return e + ' bar ' + f;
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};
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var a = function(e, param) {
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var f = param === void 0 ? 5 : param;
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return e + ' bar ' + f;
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};
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"
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);
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test!(
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syntax(),
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|_| tr(),
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default_rest_mix,
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r#"function fn(
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a1,
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a2 = 4,
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{a3, a4},
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a5,
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{a6, a7} = {}) {}"#,
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"function fn(a1, param, param1, a5, param2) {
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var a2 = param === void 0 ? 4 : param, a3 = param1.a3, a4 = param1.a4, ref = param2 === void 0 \
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? {
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} : param2, a6 = ref.a6, a7 = ref.a7;
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}
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"
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);
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test!(
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syntax(),
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|_| tr(),
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default_rest_1,
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r#"const a = 1;
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function rest(b = a, ...a) {
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expect(b).toBe(1);
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}
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rest(undefined, 2)"#,
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r#"var a = 1;
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function rest(param) {
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var b = param === void 0 ? a : param;
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for(var _len = arguments.length, a1 = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
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a1[_key - 1] = arguments[_key];
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}
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expect(b).toBe(1);
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}
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rest(undefined, 2);"#
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);
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test!(
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syntax(),
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|_| tr(),
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default_rest_2,
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r#"const a = 1;
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function rest2(b = a, ...a) {
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expect(a[0]).toBe(2);
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}
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rest2(undefined, 2);"#,
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r#"var a = 1;
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function rest2(param) {
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var b = param === void 0 ? a : param;
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for(var _len = arguments.length, a1 = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
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a1[_key - 1] = arguments[_key];
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}
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expect(a1[0]).toBe(2);
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}
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rest2(undefined, 2);"#
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);
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test!(
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syntax(),
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|_| tr(),
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default_rest_3,
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r#"const a = 1;
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function rest3(b = a, ...a) {
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expect(a).toHaveLength(1);
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}
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rest3(undefined, 2)"#,
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r#"var a = 1;
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function rest3(param) {
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var b = param === void 0 ? a : param;
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for(var _len = arguments.length, a1 = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
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a1[_key - 1] = arguments[_key];
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}
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expect(a1).toHaveLength(1);
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}
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rest3(undefined, 2);"#
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);
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test_exec!(
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syntax(),
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|_| tr(),
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default_rest_exec,
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r#"const a = 1;
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function rest(b = a, ...a) {
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expect(b).toBe(1);
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}
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rest(undefined, 2)
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function rest2(b = a, ...a) {
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expect(a[0]).toBe(2);
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}
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rest2(undefined, 2)
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function rest3(b = a, ...a) {
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expect(a).toHaveLength(1);
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}
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rest3(undefined, 2)"#
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);
|
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|
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test!(
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syntax(),
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|_| tr(),
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default_setter_noexec,
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r#"const obj = {
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set field(num = 1) {
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this.num = num;
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}
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};"#,
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"var obj = {
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set field (param){
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var num = param === void 0 ? 1 : param;
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this.num = num;
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}
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};
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"
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);
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|
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test_exec!(
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syntax(),
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|_| tr(),
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default_setter_exec,
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r#"const defaultValue = 1;
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const obj = {
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set field(num = defaultValue) {
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this.num = num;
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}
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};
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obj.field = void 0;
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expect(obj.num).toBe(defaultValue);"#
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);
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test!(
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syntax(),
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|_| tr(),
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default_single,
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r#"var t = function (f = "foo") {
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return f + " bar";
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};"#,
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r#"var t = function(param) {
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var f = param === void 0 ? 'foo' : param;
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return f + ' bar';
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};"#
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);
|
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|
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test!(
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syntax(),
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|_| tr(),
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destructuring_rest,
|
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r#"// #3861
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function t(x = "default", { a, b }, ...args) {
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console.log(x, a, b, args);
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}"#,
|
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"// #3861
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function t(param, param1) {
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var x = param === void 0 ? 'default' : param, a = param1.a, b = param1.b;
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for(var _len = arguments.length, args = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < \
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_len; _key++){
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args[_key - 2] = arguments[_key];
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}
|
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console.log(x, a, b, args);
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}
|
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"
|
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);
|
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|
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test!(
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syntax(),
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|_| tr(),
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regression_4333,
|
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r#"const args = 'bar';
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function foo(...args) {
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return args;
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}"#,
|
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r#"var args = 'bar';
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function foo() {
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for(var _len = arguments.length, args1 = new Array(_len), _key = 0; _key < _len; _key++){
|
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args1[_key] = arguments[_key];
|
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}
|
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return args1;
|
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}
|
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"#
|
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);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| tr(),
|
|
regression_4348,
|
|
r#"function first(...values) {
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var index = 0;
|
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return values[index++];
|
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}"#,
|
|
r#"function first() {
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for(var _len = arguments.length, values = new Array(_len), _key = 0; _key < _len; _key++){
|
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values[_key] = arguments[_key];
|
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}
|
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var index = 0;
|
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return values[index++];
|
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}"#
|
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);
|
|
|
|
test!(
|
|
ignore,
|
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syntax(),
|
|
// type
|
|
|_| tr(),
|
|
regression_4634,
|
|
r#"let oneOf = (...nodes) => {
|
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if (nodes.length === 1) {
|
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return nodes[0];
|
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}
|
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return ((new OneOfNode(nodes)): any)
|
|
}"#,
|
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r#"
|
|
let oneOf = function () {
|
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for (var _len = arguments.length, nodes = new Array(_len), _key = 0; _key < _len; _key++) {
|
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nodes[_key] = arguments[_key];
|
|
}
|
|
|
|
if (nodes.length === 1) {
|
|
return nodes[0];
|
|
}
|
|
|
|
return new OneOfNode(nodes);
|
|
};"#
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| tr(),
|
|
regression_5787,
|
|
r#"function f(a, ...rest) {
|
|
let b = rest[rest.length - 3];
|
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let c = rest[rest.length - 2];
|
|
let d = rest[rest.length - 1];
|
|
return [a, b, c, d];
|
|
}
|
|
|
|
function f(a, ...rest) {
|
|
return rest[-1];
|
|
}"#,
|
|
r#"function f(a) {
|
|
for(var _len = arguments.length, rest = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
|
|
rest[_key - 1] = arguments[_key];
|
|
}
|
|
var b = rest[rest.length - 3];
|
|
var c = rest[rest.length - 2];
|
|
var d = rest[rest.length - 1];
|
|
return [a, b, c, d];
|
|
}
|
|
function f(a) {
|
|
for(var _len = arguments.length, rest = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
|
|
rest[_key - 1] = arguments[_key];
|
|
}
|
|
return rest[-1];
|
|
}"#
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(),
|
|
regression_5787_exec,
|
|
r#"function f1(a, ...rest) {
|
|
let b = rest[rest.length - 3];
|
|
let c = rest[rest.length - 2];
|
|
let d = rest[rest.length - 1];
|
|
return [a, b, c, d];
|
|
}
|
|
expect(f1(1, 2)).toEqual([1, undefined, undefined, 2]);
|
|
|
|
function f2(a, ...rest) {
|
|
return rest[-1];
|
|
}
|
|
expect(f2(1, 2)).toBeUndefined();"#
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_args_deoptimiazation,
|
|
r#"function x (...rest) {
|
|
arguments;
|
|
}"#,
|
|
r#"
|
|
function x() {
|
|
for (var _len = arguments.length, rest = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
rest[_key] = arguments[_key];
|
|
}
|
|
|
|
arguments;
|
|
}"#
|
|
);
|
|
|
|
test!(
|
|
// Stage 0
|
|
ignore,
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_arrow_fn,
|
|
r#"var concat = (...arrs) => {
|
|
var x = arrs[0];
|
|
var y = arrs[1];
|
|
};
|
|
|
|
var somefun = function () {
|
|
let get2ndArg = (a, b, ...args) => {
|
|
var _b = args[0];
|
|
let somef = (x, y, z, ...args2) => {
|
|
var _a = args2[0];
|
|
};
|
|
let somefg = (c, d, e, f, ...args3) => {
|
|
var _a = args3[0];
|
|
};
|
|
var _d = args[1];
|
|
};
|
|
let get3rdArg = (...args) => args[2];
|
|
}
|
|
|
|
function demo1(...args) {
|
|
return (i) => {
|
|
return args[i+0];
|
|
};
|
|
}
|
|
|
|
var x = (...rest) => {
|
|
if (noNeedToWork) return 0;
|
|
return rest;
|
|
};
|
|
|
|
var innerclassproperties = (...args) => (
|
|
class {
|
|
static args = args;
|
|
args = args;
|
|
}
|
|
);"#,
|
|
r#"var concat = function () {
|
|
var x = arguments.length <= 0 ? undefined : arguments[0];
|
|
var y = arguments.length <= 1 ? undefined : arguments[1];
|
|
};
|
|
|
|
var somefun = function () {
|
|
var get2ndArg = function (a, b) {
|
|
var _b = arguments.length <= 2 ? undefined : arguments[2];
|
|
|
|
var somef = function (x, y, z) {
|
|
var _a = arguments.length <= 3 ? undefined : arguments[3];
|
|
};
|
|
|
|
var somefg = function (c, d, e, f) {
|
|
var _a = arguments.length <= 4 ? undefined : arguments[4];
|
|
};
|
|
|
|
var _d = arguments.length <= 3 ? undefined : arguments[3];
|
|
};
|
|
|
|
var get3rdArg = function () {
|
|
return arguments.length <= 2 ? undefined : arguments[2];
|
|
};
|
|
};
|
|
|
|
function demo1() {
|
|
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
args[_key] = arguments[_key];
|
|
}
|
|
|
|
return function (i) {
|
|
return args[i + 0];
|
|
};
|
|
}
|
|
|
|
var x = function () {
|
|
if (noNeedToWork) return 0;
|
|
|
|
for (var _len2 = arguments.length, rest = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
|
|
rest[_key2] = arguments[_key2];
|
|
}
|
|
|
|
return rest;
|
|
};
|
|
|
|
var innerclassproperties = function () {
|
|
var _class, _temp;
|
|
|
|
for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
|
|
args[_key3] = arguments[_key3];
|
|
}
|
|
|
|
return _temp = _class = function _class() {
|
|
"use strict";
|
|
|
|
_classCallCheck(this, _class);
|
|
this.args = args;
|
|
}, _class.args = args, _temp;
|
|
};"#
|
|
);
|
|
|
|
test!(
|
|
ignore,
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_async_arrow_fn,
|
|
r#"var concat = async (...arrs) => {
|
|
var x = arrs[0];
|
|
var y = arrs[1];
|
|
};
|
|
|
|
var x = async (...rest) => {
|
|
if (noNeedToWork) return 0;
|
|
return rest;
|
|
};"#,
|
|
r#"var concat =
|
|
/*#__PURE__*/
|
|
function () {
|
|
var _ref = _asyncToGenerator(function* () {
|
|
var x = arguments.length <= 0 ? undefined : arguments[0];
|
|
var y = arguments.length <= 1 ? undefined : arguments[1];
|
|
});
|
|
|
|
return function concat() {
|
|
return _ref.apply(this, arguments);
|
|
};
|
|
}();
|
|
|
|
var x =
|
|
/*#__PURE__*/
|
|
function () {
|
|
var _ref2 = _asyncToGenerator(function* () {
|
|
if (noNeedToWork) return 0;
|
|
|
|
for (var _len = arguments.length, rest = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
rest[_key] = arguments[_key];
|
|
}
|
|
|
|
return rest;
|
|
});
|
|
|
|
return function x() {
|
|
return _ref2.apply(this, arguments);
|
|
};
|
|
}();"#
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| chain!(arrow(), tr()),
|
|
rest_binding_deoptimisation,
|
|
r#"const deepAssign = (...args) => args = [];
|
|
"#,
|
|
r#"var deepAssign = function () {
|
|
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
args[_key] = arguments[_key];
|
|
}
|
|
|
|
return args = [];
|
|
};"#
|
|
);
|
|
|
|
test!(
|
|
// optimiation is not implemented
|
|
ignore,
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_deepest_common_ancestor_earliest_child,
|
|
r#"// single reference
|
|
function r(...rest){
|
|
if (noNeedToWork) return 0;
|
|
return rest;
|
|
}
|
|
|
|
// multiple references
|
|
function r(...rest){
|
|
if (noNeedToWork) return 0;
|
|
|
|
rest;
|
|
rest;
|
|
}
|
|
|
|
// multiple nested references
|
|
function r(...rest){
|
|
if (noNeedToWork) return 0;
|
|
|
|
if (true) {
|
|
return rest;
|
|
} else {
|
|
return rest;
|
|
}
|
|
}
|
|
|
|
// deeply nested
|
|
function r(...rest){
|
|
if (true) {
|
|
if (true) {
|
|
return rest;
|
|
} else {
|
|
return rest;
|
|
}
|
|
}
|
|
}
|
|
|
|
// nested reference with root reference
|
|
function r(...rest){
|
|
if (noNeedToWork) return 0;
|
|
|
|
if (lol) rest;
|
|
rest;
|
|
}
|
|
|
|
// nested functions
|
|
function a(...args) {
|
|
return function() {
|
|
function b() {}
|
|
|
|
console.log("Shouldn't args be from a's scope?", args);
|
|
};
|
|
}
|
|
|
|
// loop
|
|
function runQueue(queue, ...args) {
|
|
for (let i = 0; i < queue.length; i++) {
|
|
queue[i](...args)
|
|
}
|
|
}
|
|
|
|
// nested loop
|
|
function runQueue(queue, ...args) {
|
|
if (foo) {
|
|
for (let i = 0; i < queue.length; i++) {
|
|
queue[i](...args)
|
|
}
|
|
}
|
|
}
|
|
|
|
function r(...rest){
|
|
if (noNeedToWork) return 0;
|
|
[rest[0]] = x;
|
|
return rest;
|
|
}"#,
|
|
r#"// single reference
|
|
function r() {
|
|
if (noNeedToWork) return 0;
|
|
|
|
for (var _len = arguments.length, rest = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
rest[_key] = arguments[_key];
|
|
}
|
|
|
|
return rest;
|
|
} // multiple references
|
|
|
|
|
|
function r() {
|
|
if (noNeedToWork) return 0;
|
|
|
|
for (var _len2 = arguments.length, rest = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
|
|
rest[_key2] = arguments[_key2];
|
|
}
|
|
|
|
rest;
|
|
rest;
|
|
} // multiple nested references
|
|
|
|
|
|
function r() {
|
|
if (noNeedToWork) return 0;
|
|
|
|
for (var _len3 = arguments.length, rest = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
|
|
rest[_key3] = arguments[_key3];
|
|
}
|
|
|
|
if (true) {
|
|
return rest;
|
|
} else {
|
|
return rest;
|
|
}
|
|
} // deeply nested
|
|
|
|
|
|
function r() {
|
|
if (true) {
|
|
for (var _len4 = arguments.length, rest = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
|
|
rest[_key4] = arguments[_key4];
|
|
}
|
|
|
|
if (true) {
|
|
return rest;
|
|
} else {
|
|
return rest;
|
|
}
|
|
}
|
|
} // nested reference with root reference
|
|
|
|
|
|
function r() {
|
|
if (noNeedToWork) return 0;
|
|
|
|
for (var _len5 = arguments.length, rest = new Array(_len5), _key5 = 0; _key5 < _len5; _key5++) {
|
|
rest[_key5] = arguments[_key5];
|
|
}
|
|
|
|
if (lol) rest;
|
|
rest;
|
|
} // nested functions
|
|
|
|
|
|
function a() {
|
|
for (var _len6 = arguments.length, args = new Array(_len6), _key6 = 0; _key6 < _len6; _key6++) {
|
|
args[_key6] = arguments[_key6];
|
|
}
|
|
|
|
return function () {
|
|
function b() {}
|
|
|
|
console.log("Shouldn't args be from a's scope?", args);
|
|
};
|
|
} // loop
|
|
|
|
|
|
function runQueue(queue) {
|
|
for (var _len7 = arguments.length, args = new Array(_len7 > 1 ? _len7 - 1 : 0), _key7 = 1; _key7 < _len7; _key7++) {
|
|
args[_key7 - 1] = arguments[_key7];
|
|
}
|
|
|
|
for (var i = 0; i < queue.length; i++) {
|
|
queue[i].apply(queue, args);
|
|
}
|
|
} // nested loop
|
|
|
|
|
|
function runQueue(queue) {
|
|
if (foo) {
|
|
for (var _len8 = arguments.length, args = new Array(_len8 > 1 ? _len8 - 1 : 0), _key8 = 1; _key8 < _len8; _key8++) {
|
|
args[_key8 - 1] = arguments[_key8];
|
|
}
|
|
|
|
for (var i = 0; i < queue.length; i++) {
|
|
queue[i].apply(queue, args);
|
|
}
|
|
}
|
|
}
|
|
|
|
function r() {
|
|
if (noNeedToWork) return 0;
|
|
|
|
for (var _len9 = arguments.length, rest = new Array(_len9), _key9 = 0; _key9 < _len9; _key9++) {
|
|
rest[_key9] = arguments[_key9];
|
|
}
|
|
|
|
var _x = x;
|
|
|
|
var _x2 = _slicedToArray(_x, 1);
|
|
|
|
rest[0] = _x2[0];
|
|
return rest;
|
|
}"#
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_length,
|
|
r#"var t = function (f, ...items) {
|
|
items[0];
|
|
items[items.length - 1];
|
|
};
|
|
|
|
function t(f, ...items) {
|
|
items;
|
|
items[0];
|
|
items[items.length - 1];
|
|
}"#,
|
|
r#"var t = function(f) {
|
|
for(var _len = arguments.length, items = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
|
|
items[_key - 1] = arguments[_key];
|
|
}
|
|
items[0];
|
|
items[items.length - 1];
|
|
};
|
|
function t(f) {
|
|
for(var _len = arguments.length, items = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
|
|
items[_key - 1] = arguments[_key];
|
|
}
|
|
items;
|
|
items[0];
|
|
items[items.length - 1];
|
|
}"#
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_length_exec,
|
|
r#"var length = function (a, b, ...items) {
|
|
return items.length;
|
|
};
|
|
|
|
expect(length()).toBe(0);
|
|
expect(length(1)).toBe(0);
|
|
expect(length(1, 2)).toBe(0);
|
|
expect(length(1, 2, 3)).toBe(1);"#
|
|
);
|
|
|
|
test!(
|
|
// optimisation is not implemented
|
|
ignore,
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_member_expression_deoptimisation,
|
|
r#"var t = function (...items) {
|
|
var x = items[0];
|
|
var y = items[1];
|
|
}
|
|
|
|
function t(...items) {
|
|
var x = items[0];
|
|
var y = items[1];
|
|
}
|
|
|
|
function t(...items) {
|
|
var a = [];
|
|
for (var i = 0; i < items.length; i++) {
|
|
a.push(i);
|
|
}
|
|
return a;
|
|
}
|
|
|
|
// https://github.com/babel/babel/pull/2833#issuecomment-166039291
|
|
function t(...items) {
|
|
for (let i = 0; i < items.length; i++) {
|
|
return items[i];
|
|
}
|
|
}"#,
|
|
r#"var t = function () {
|
|
var x = arguments.length <= 0 ? undefined : arguments[0];
|
|
var y = arguments.length <= 1 ? undefined : arguments[1];
|
|
};
|
|
|
|
function t() {
|
|
var x = arguments.length <= 0 ? undefined : arguments[0];
|
|
var y = arguments.length <= 1 ? undefined : arguments[1];
|
|
}
|
|
|
|
function t() {
|
|
var a = [];
|
|
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
a.push(i);
|
|
}
|
|
|
|
return a;
|
|
} // https://github.com/babel/babel/pull/2833#issuecomment-166039291
|
|
|
|
|
|
function t() {
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
return i < 0 || arguments.length <= i ? undefined : arguments[i];
|
|
}
|
|
}"#
|
|
);
|
|
|
|
test!(
|
|
// optimisation is not implemented
|
|
ignore,
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_member_expression_optimisation,
|
|
r#"var t = function (...items) {
|
|
var x = items[0];
|
|
var y = items[1];
|
|
}
|
|
|
|
function t(...items) {
|
|
var x = items[0];
|
|
var y = items[1];
|
|
}
|
|
|
|
function t(...items) {
|
|
var a = [];
|
|
for (var i = 0; i < items.length; i++) {
|
|
a.push(i);
|
|
}
|
|
return a;
|
|
}
|
|
|
|
// https://github.com/babel/babel/pull/2833#issuecomment-166039291
|
|
function t(...items) {
|
|
for (let i = 0; i < items.length; i++) {
|
|
return items[i];
|
|
}
|
|
}"#,
|
|
r#"var t = function () {
|
|
var x = arguments.length <= 0 ? undefined : arguments[0];
|
|
var y = arguments.length <= 1 ? undefined : arguments[1];
|
|
};
|
|
|
|
function t() {
|
|
var x = arguments.length <= 0 ? undefined : arguments[0];
|
|
var y = arguments.length <= 1 ? undefined : arguments[1];
|
|
}
|
|
|
|
function t() {
|
|
var a = [];
|
|
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
a.push(i);
|
|
}
|
|
|
|
return a;
|
|
} // https://github.com/babel/babel/pull/2833#issuecomment-166039291
|
|
|
|
|
|
function t() {
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
return i < 0 || arguments.length <= i ? undefined : arguments[i];
|
|
}
|
|
}"#
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_multiple,
|
|
r#"var t = function (f, ...items) {
|
|
var x = f;
|
|
x = items[0];
|
|
x = items[1];
|
|
};
|
|
|
|
function t(f, ...items) {
|
|
var x = f;
|
|
x = items[0];
|
|
x = items[1];
|
|
}
|
|
|
|
function u(f, g, ...items) {
|
|
var x = f;
|
|
var y = g;
|
|
x[12] = items[0];
|
|
y.prop = items[1];
|
|
var z = items[2] | 0 || 12;
|
|
}"#,
|
|
r#"var t = function(f) {
|
|
for(var _len = arguments.length, items = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
|
|
items[_key - 1] = arguments[_key];
|
|
}
|
|
var x = f;
|
|
x = items[0];
|
|
x = items[1];
|
|
};
|
|
function t(f) {
|
|
for(var _len = arguments.length, items = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++){
|
|
items[_key - 1] = arguments[_key];
|
|
}
|
|
var x = f;
|
|
x = items[0];
|
|
x = items[1];
|
|
}
|
|
function u(f, g) {
|
|
for(var _len = arguments.length, items = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++){
|
|
items[_key - 2] = arguments[_key];
|
|
}
|
|
var x = f;
|
|
var y = g;
|
|
x[12] = items[0];
|
|
y.prop = items[1];
|
|
var z = items[2] | 0 || 12;
|
|
}"#
|
|
);
|
|
|
|
test!(
|
|
// optimisation is not implemented
|
|
ignore,
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_nested_5656,
|
|
r#"function a(...args) {
|
|
const foo = (...list) => bar(...list);
|
|
foo(...args);
|
|
}
|
|
|
|
function b(...args) {
|
|
const foo = (...args) => bar(...args);
|
|
foo(...args);
|
|
}
|
|
|
|
function c(...args) {
|
|
const foo = (...args) => bar(...args);
|
|
foo([]);
|
|
}
|
|
|
|
function d(thing, ...args) {
|
|
const foo = (...args) => bar(...args);
|
|
{
|
|
let args = thing;
|
|
foo(thing);
|
|
}
|
|
}"#,
|
|
r#"function a() {
|
|
var foo = function () {
|
|
return bar.apply(void 0, arguments);
|
|
};
|
|
|
|
foo.apply(void 0, arguments);
|
|
}
|
|
|
|
function b() {
|
|
var foo = function () {
|
|
return bar.apply(void 0, arguments);
|
|
};
|
|
|
|
foo.apply(void 0, arguments);
|
|
}
|
|
|
|
function c() {
|
|
var foo = function () {
|
|
return bar.apply(void 0, arguments);
|
|
};
|
|
|
|
foo([]);
|
|
}
|
|
|
|
function d(thing) {
|
|
var foo = function () {
|
|
return bar.apply(void 0, arguments);
|
|
};
|
|
|
|
{
|
|
var args = thing;
|
|
foo(thing);
|
|
}
|
|
}"#
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|t| chain!(
|
|
tr(),
|
|
classes(Some(t.comments.clone())),
|
|
spread(Default::default())
|
|
),
|
|
rest_nested_iife,
|
|
r#"function broken(x, ...foo) {
|
|
if (true) {
|
|
class Foo extends Bar { }
|
|
return hello(...foo)
|
|
}
|
|
}"#,
|
|
r#"function broken(x) {
|
|
for(var _len = arguments.length, foo = new Array(_len > 1 ? _len - 1 : 0),
|
|
_key = 1; _key < _len; _key++){
|
|
foo[_key - 1] = arguments[_key];
|
|
}
|
|
if (true) {
|
|
let Foo = function(Bar) {
|
|
'use strict';
|
|
_inherits(Foo, Bar);
|
|
function Foo() {
|
|
_classCallCheck(this, Foo);
|
|
return _possibleConstructorReturn(this,
|
|
_getPrototypeOf(Foo).apply(this, arguments));
|
|
}
|
|
return Foo;
|
|
}(Bar);
|
|
return hello.apply(void 0, _toConsumableArray(foo));
|
|
}
|
|
}"#
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_patterns,
|
|
r#"function foo(...[a]) {}"#,
|
|
r#"function foo() {
|
|
for(var _len = arguments.length, _tmp = new Array(_len), _key = 0; _key < _len; _key++){
|
|
_tmp[_key] = arguments[_key];
|
|
}
|
|
var __tmp = _slicedToArray(_tmp, 1), a = __tmp[0];
|
|
}"#
|
|
);
|
|
|
|
test_exec!(
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_patterns_exec,
|
|
r#"
|
|
function foo(...{ length }) {
|
|
return length;
|
|
}
|
|
|
|
expect(foo(1, 2, 3)).toEqual(3);"#
|
|
);
|
|
|
|
test!(
|
|
// optimisation is not implemented
|
|
ignore,
|
|
syntax(),
|
|
|_| tr(),
|
|
rest_spread_optimisation,
|
|
r#"// optimisation
|
|
|
|
function foo(...bar) {
|
|
foo(...bar);
|
|
}
|
|
|
|
// deoptimisation
|
|
|
|
function foo(a, ...b) {
|
|
foo(...b);
|
|
}
|
|
|
|
function foo(...b) {
|
|
foo(1, ...b);
|
|
}
|
|
|
|
function foo(...args){
|
|
args.pop()
|
|
foo(...args);
|
|
}"#,
|
|
r#"// optimisation
|
|
function foo() {
|
|
foo.apply(void 0, arguments);
|
|
} // deoptimisation
|
|
|
|
|
|
function foo(a) {
|
|
for (var _len = arguments.length, b = new Array(_len > 1 ? _len - 1 : 0),
|
|
_key = 1; _key < _len; _key++) {
|
|
b[_key - 1] = arguments[_key];
|
|
}
|
|
|
|
foo.apply(void 0, b);
|
|
}
|
|
|
|
function foo() {
|
|
for (var _len2 = arguments.length, b = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
|
|
b[_key2] = arguments[_key2];
|
|
}
|
|
|
|
foo.apply(void 0, [1].concat(b));
|
|
}
|
|
|
|
function foo() {
|
|
for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
|
|
args[_key3] = arguments[_key3];
|
|
}
|
|
|
|
args.pop();
|
|
foo.apply(void 0, args);
|
|
}"#
|
|
);
|
|
|
|
//// regression_6057_expanded
|
|
//test!(
|
|
// syntax(),
|
|
// |_| tr(r#"{
|
|
// "presets": ["env"],
|
|
// "plugins": ["proposal-class-properties"]
|
|
//}
|
|
//"#),
|
|
// regression_6057_expanded,
|
|
// r#"
|
|
//import args from 'utils/url/args';
|
|
//
|
|
//export default class App extends Component {
|
|
// exportType = ''
|
|
//
|
|
// componentDidMount() {
|
|
// this.exportType = args.get('type', window.location.href);
|
|
// }
|
|
//}
|
|
//
|
|
//"#,
|
|
// r#"
|
|
//"use strict";
|
|
//
|
|
//Object.defineProperty(exports, "__esModule", {
|
|
// value: true
|
|
//});
|
|
//exports["default"] = void 0;
|
|
//
|
|
//var _args = _interopRequireDefault(require("utils/url/args"));
|
|
//
|
|
//function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : {
|
|
// "default": obj }; }
|
|
//
|
|
//function _typeof(obj) { if (typeof Symbol === "function" && typeof
|
|
// Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return
|
|
// typeof obj; }; } else { _typeof = function _typeof(obj) { return obj &&
|
|
// typeof Symbol === "function" && obj.constructor === Symbol && obj !==
|
|
// Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
|
|
//
|
|
//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 _possibleConstructorReturn(self, call) { if (call && (_typeof(call)
|
|
// === "object" || typeof call === "function")) { return call; } return
|
|
// _assertThisInitialized(self); }
|
|
//
|
|
//function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ?
|
|
// Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ ||
|
|
// Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
|
|
//
|
|
//function _assertThisInitialized(self) { if (self === void 0) { throw new
|
|
// ReferenceError("this hasn't been initialised - super() hasn't been called");
|
|
// } return self; }
|
|
//
|
|
//function _inherits(subClass, superClass) { if (typeof superClass !==
|
|
// "function" && superClass !== null) { throw new TypeError("Super expression
|
|
// must either be null or a function"); } subClass.prototype =
|
|
// Object.create(superClass && superClass.prototype, { constructor: { value:
|
|
// subClass, writable: true, configurable: true } }); if (superClass)
|
|
// _setPrototypeOf(subClass, superClass); }
|
|
//
|
|
//function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ||
|
|
// function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return
|
|
// _setPrototypeOf(o, p); }
|
|
//
|
|
//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 App =
|
|
// /*#__PURE__*/
|
|
//function (_Component) {
|
|
// _inherits(App, _Component);
|
|
//
|
|
// function App() {
|
|
// var _getPrototypeOf2;
|
|
//
|
|
// var _this;
|
|
//
|
|
// _classCallCheck(this, App);
|
|
//
|
|
// for (var _len = arguments.length, args = new Array(_len), _key = 0; _key <
|
|
// _len; _key++) { args[_key] = arguments[_key];
|
|
// }
|
|
//
|
|
// _this = _possibleConstructorReturn(this, (_getPrototypeOf2 =
|
|
// _getPrototypeOf(App)).call.apply(_getPrototypeOf2, [this].concat(args)));
|
|
//
|
|
// _defineProperty(_assertThisInitialized(_this), "exportType", '');
|
|
//
|
|
// return _this;
|
|
// }
|
|
//
|
|
// _createClass(App, [{
|
|
// key: "componentDidMount",
|
|
// value: function componentDidMount() {
|
|
// this.exportType = _args["default"].get('type', window.location.href);
|
|
// }
|
|
// }]);
|
|
//
|
|
// return App;
|
|
//}(Component);
|
|
//
|
|
//exports["default"] = App;
|
|
//
|
|
//"#
|
|
//);
|
|
|
|
//// parameters_iife_this_9385
|
|
//test!(
|
|
// syntax(),
|
|
// |_| tr(r#"{
|
|
// "plugins": ["transform-typescript"],
|
|
// "presets": ["env"]
|
|
//}
|
|
//"#),
|
|
// parameters_iife_this_9385,
|
|
// r#"
|
|
//export class Test {
|
|
// invite(options: { privacy: string } = {}) {
|
|
// const privacy = options.privacy || "Private"
|
|
// console.log(this)
|
|
// }
|
|
//}
|
|
//"#,
|
|
// r#"
|
|
//"use strict";
|
|
//
|
|
//Object.defineProperty(exports, "__esModule", {
|
|
// value: true
|
|
//});
|
|
//exports.Test = void 0;
|
|
//
|
|
//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; }
|
|
//
|
|
//var Test =
|
|
// /*#__PURE__*/
|
|
//function () {
|
|
// function Test() {
|
|
// _classCallCheck(this, Test);
|
|
// }
|
|
//
|
|
// _createClass(Test, [{
|
|
// key: "invite",
|
|
// value: function invite() {
|
|
// var options = arguments.length > 0 && arguments[0] !== undefined ?
|
|
// arguments[0] : {}; var privacy = options.privacy || "Private";
|
|
// console.log(this);
|
|
// }
|
|
// }]);
|
|
//
|
|
// return Test;
|
|
//}();
|
|
//
|
|
//exports.Test = Test;
|
|
//
|
|
//"#
|
|
//);
|
|
|
|
// parameters_rest_async_arrow_functions
|
|
test!(
|
|
// See https://github.com/swc-project/swc/issues/490
|
|
ignore,
|
|
syntax(),
|
|
|_| chain!(async_to_generator(), arrow(), parameters(),),
|
|
parameters_rest_async_arrow_functions_1,
|
|
r#"
|
|
var concat = async (...arrs) => {
|
|
var x = arrs[0];
|
|
var y = arrs[1];
|
|
};
|
|
"#,
|
|
r#"
|
|
var concat = function () {
|
|
var _ref = _asyncToGenerator(function* () {
|
|
var x = arguments.length <= 0 ? undefined : arguments[0];
|
|
var y = arguments.length <= 1 ? undefined : arguments[1];
|
|
});
|
|
|
|
return function concat() {
|
|
return _ref.apply(this, arguments);
|
|
};
|
|
}();
|
|
"#
|
|
);
|
|
|
|
// parameters_rest_async_arrow_functions
|
|
test!(
|
|
// See https://github.com/swc-project/swc/issues/490
|
|
ignore,
|
|
syntax(),
|
|
|_| chain!(async_to_generator(), arrow(), parameters(),),
|
|
parameters_rest_async_arrow_functions_2,
|
|
r#"
|
|
var x = async (...rest) => {
|
|
if (noNeedToWork) return 0;
|
|
return rest;
|
|
};
|
|
|
|
"#,
|
|
r#"
|
|
var x = function () {
|
|
var _ref = _asyncToGenerator(function* () {
|
|
if (noNeedToWork) return 0;
|
|
|
|
for (var _len = arguments.length, rest = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
rest[_key] = arguments[_key];
|
|
}
|
|
|
|
return rest;
|
|
});
|
|
|
|
return function x() {
|
|
return _ref.apply(this, arguments);
|
|
};
|
|
}();
|
|
|
|
"#
|
|
);
|
|
|
|
// regression_6057_simple
|
|
test!(
|
|
syntax(),
|
|
|_| parameters(),
|
|
regression_6057_simple,
|
|
r#"
|
|
const a = 'bar';
|
|
function foo(...a) {
|
|
return a;
|
|
}
|
|
|
|
|
|
"#,
|
|
r#"
|
|
const a = 'bar';
|
|
|
|
function foo() {
|
|
for (let _len = arguments.length, a = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
a[_key] = arguments[_key];
|
|
}
|
|
|
|
return a;
|
|
}
|
|
|
|
"#
|
|
);
|
|
|
|
// parameters_regression_4333
|
|
test!(
|
|
syntax(),
|
|
|_| chain!(parameters(), block_scoping(),),
|
|
parameters_regression_4333,
|
|
r#"
|
|
const args = 'bar';
|
|
function foo(...args) {
|
|
return args;
|
|
}
|
|
|
|
"#,
|
|
r#"
|
|
var args = 'bar';
|
|
|
|
function foo() {
|
|
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
|
|
args[_key] = arguments[_key];
|
|
}
|
|
|
|
return args;
|
|
}
|
|
|
|
"#
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| chain!(parameters(), destructuring(Default::default())),
|
|
issue_760,
|
|
"const initialState = 'foo'
|
|
export default function reducer(state = initialState, action = {}) {
|
|
}",
|
|
"const initialState = 'foo';
|
|
export default function reducer(param, param1) {
|
|
let state = param === void 0 ? initialState : param, action = param1 === void 0 ? {
|
|
} : param1;
|
|
}"
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| parameters(),
|
|
rest_in_top_level_arrow_1,
|
|
"
|
|
const arrow = (...args) => {
|
|
console.log(args);
|
|
}
|
|
",
|
|
"
|
|
const arrow = function() {
|
|
for(let _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++){
|
|
args[_key] = arguments[_key];
|
|
}
|
|
console.log(args);
|
|
};
|
|
"
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| parameters(),
|
|
rest_in_top_level_arrow_2,
|
|
"
|
|
const arrow = () => (...args) => {
|
|
console.log(args);
|
|
}
|
|
",
|
|
"
|
|
const arrow = ()=>function() {
|
|
for(let _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++){
|
|
args[_key] = arguments[_key];
|
|
}
|
|
console.log(args);
|
|
};
|
|
"
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| parameters(),
|
|
rest_in_top_level_arrow_3,
|
|
"
|
|
const arrow = () => (...args) => {
|
|
console.log(this, args);
|
|
}
|
|
",
|
|
"
|
|
const arrow = ()=>{
|
|
var self = this;
|
|
return function() {
|
|
for(let _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; \
|
|
_key++){
|
|
args[_key] = arguments[_key];
|
|
}
|
|
console.log(self, args);
|
|
};
|
|
};
|
|
"
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| parameters(),
|
|
rest_in_top_level_arrow_4,
|
|
"
|
|
const arrow = () => (this, (...args) => {
|
|
console.log(this, args);
|
|
})
|
|
",
|
|
"
|
|
const arrow = ()=>{
|
|
var self = this;
|
|
return this, function() {
|
|
for(let _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++){
|
|
args[_key] = arguments[_key];
|
|
}
|
|
console.log(self, args);
|
|
};
|
|
};
|
|
"
|
|
);
|
|
|
|
test!(
|
|
syntax(),
|
|
|_| parameters(),
|
|
rest_in_top_level_arrow_nested_1,
|
|
"
|
|
const arrow = (...args) => (this, () => (...args) => {
|
|
console.log(this, args);
|
|
})
|
|
",
|
|
"
|
|
var self = this;
|
|
const arrow = function() {
|
|
for(let _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++){
|
|
args[_key] = arguments[_key];
|
|
}
|
|
return self, ()=>{
|
|
var self = this;
|
|
return function() {
|
|
for(let _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; \
|
|
_key++){
|
|
args[_key] = arguments[_key];
|
|
}
|
|
console.log(self, args);
|
|
};
|
|
};
|
|
};
|
|
"
|
|
);
|