swc/crates/swc_ecma_transforms/tests/es2015_function_name.rs

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#![cfg(all(
feature = "swc_ecma_transforms_compat",
feature = "swc_ecma_transforms_module",
feature = "swc_ecma_transforms_optimization",
feature = "swc_ecma_transforms_proposal",
))]
use swc_common::{chain, Mark};
use swc_ecma_parser::Syntax;
use swc_ecma_transforms_base::resolver::resolver;
use swc_ecma_transforms_compat::{
es2015::{arrow, block_scoping, classes, function_name, shorthand},
es2022::class_properties,
};
use swc_ecma_transforms_module::common_js::common_js;
use swc_ecma_transforms_proposal::decorators;
use swc_ecma_transforms_testing::test;
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use swc_ecma_visit::Fold;
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fn syntax() -> Syntax {
Default::default()
}
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fn tr() -> impl Fold {
chain!(resolver(), function_name(), block_scoping())
}
//macro_rules! identical {
// ($name:ident, $src:literal) => {
// test!(syntax(), |_| tr(), $name, $src, $src);
// };
//}
test!(
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syntax(),
|_| tr(),
basic,
r#"var number = function (x) {
return x;
};"#,
r#"var number = function number(x) {
return x;
};"#
);
test!(
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syntax(),
|_| tr(),
assign,
r#"number = function (x) {
return x;
};"#,
r#"number = function number(x) {
return x;
};"#
);
test!(
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syntax(),
|_| tr(),
let_complex,
r#"
let TestClass = {
name: "John Doe",
testMethodFailure() {
return new Promise(async function(resolve) {
console.log(this);
setTimeout(resolve, 1000);
});
}
};
"#,
r#"
var TestClass = {
name: "John Doe",
testMethodFailure() {
return new Promise(async function(resolve) {
console.log(this);
setTimeout(resolve, 1000);
});
}
}
"#
);
test!(
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syntax(),
|_| tr(),
class_simple,
r#"
var Foo = function() {
var Foo = function () {
_classCallCheck(this, Foo);
};
_defineProperty(Foo, 'num', 0);
return Foo;
}();
expect(Foo.num).toBe(0);
expect(Foo.num = 1).toBe(1);
expect(Foo.name).toBe('Foo');
"#,
r#"
var Foo1 = function() {
var Foo = function() {
_classCallCheck(this, Foo);
};
_defineProperty(Foo, 'num', 0);
return Foo;
}();
expect(Foo1.num).toBe(0);
expect(Foo1.num = 1).toBe(1);
expect(Foo1.name).toBe('Foo');
"#
);
test!(
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syntax(),
|_| tr(),
issue_288_01,
"var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf || {
__proto__: []
} instanceof Array && function (d, b) {
d.__proto__ = b;
} || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
};
return extendStatics(d, b);
};",
"var extendStatics = function (d1, b1) {
extendStatics = Object.setPrototypeOf || ({
__proto__: []
}) instanceof Array && function (d, b) {
d.__proto__ = b;
} || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
};
return extendStatics(d1, b1);
};"
);
//identical!(
// issue_288_02,
// "function components_Link_extends() {
// components_Link_extends = Object.assign || function (target) { for (var
// i = 1; i < \ arguments.length; i++) { var source = arguments[i]; for (var
// key in source) { if \ (Object.prototype.hasOwnProperty.call(source, key))
// { target[key] = source[key]; } } } \ return target; };
// return components_Link_extends.apply(this, arguments); }"
//);
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// issues_5004
test!(
syntax(),
|_| function_name(),
issues_5004,
r#"
export const x = ({x}) => x;
export const y = function () {};
"#,
r#"
export const x = ({
x
}) => x;
export const y = function y() {};
"#
);
//// function_name_export_default_arrow_renaming_module_system
//test!(syntax(),|_| tr("{
// "plugins": [
// function_name(),
// shorthand(),
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// arrow(),
// "transform-modules-systemjs"
// ]
//}
//"), function_name_export_default_arrow_renaming_module_system, r#"
//export default (a) => {
// return { a() { return a } };
//}
//
//"#, r#"
//System.register([], function (_export, _context) {
// "use strict";
//
// return {
// setters: [],
// execute: function () {
// _export("default", function (_a) {
// return {
// a: function a() {
// return _a;
// }
// };
// });
// }
// };
//});
//
//"#);
//// function_name_export_default_arrow_renaming_2
//test!(syntax(),|_| tr("{
// "presets": ["env"]
//}
//"), function_name_export_default_arrow_renaming_2, r#"
//export default () => ({
// x: ({x}) => {}
//})
//
//"#, r#"
//"use strict";
//
//Object.defineProperty(exports, "__esModule", {
// value: true
//});
//exports["default"] = void 0;
//
//var _default = function _default() {
// return {
// x: function x(_ref) {
// var _x = _ref.x;
// }
// };
//};
//
//exports["default"] = _default;
//
//"#);
// function_name_with_arrow_functions_transform
test!(
ignore,
syntax(),
|_| chain!(arrow(), function_name()),
function_name_with_arrow_functions_transform,
r#"
const x = () => x;
const y = x => x();
const z = { z: () => y(x) }.z;
"#,
r#"
const x = function x() {
return x;
};
const y = function y(x) {
return x();
};
const z = {
z: function z() {
return y(x);
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}
}.z;
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"#
);
// function_name_modules_3
test!(
syntax(),
|t| chain!(
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resolver(),
function_name(),
classes(Some(t.comments.clone()),),
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
common_js(Mark::fresh(Mark::root()), Default::default(), None)
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),
function_name_modules_3,
r#"
import {getForm} from "./store"
export default class Login extends React.Component {
getForm() {
return getForm().toJS()
}
}
"#,
r#"
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _store = require("./store");
let Login =
/*#__PURE__*/
function (_Component) {
'use strict';
_inherits(Login, _Component);
var _super = _createSuper(Login);
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function Login() {
_classCallCheck(this, Login);
return _super.apply(this, arguments);
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}
_createClass(Login, [{
key: "getForm",
value: function getForm() {
return (0, _store).getForm().toJS();
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}
}]);
return Login;
}(React.Component);
exports.default = Login;
"#
);
// function_name_basic
test!(
syntax(),
|t| chain!(
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resolver(),
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
classes(Some(t.comments.clone()),),
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function_name(),
),
function_name_basic,
r#"
var g = function () {
doSmth();
};
"#,
r#"
var g = function g() {
doSmth();
};
"#
);
// function_name_export_default_arrow_renaming
test!(
ignore,
syntax(),
|_| chain!(
arrow(),
shorthand(),
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function_name(),
common_js(Mark::fresh(Mark::root()), Default::default(), None)
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),
function_name_export_default_arrow_renaming,
r#"
export default (a) => {
return { a() { return a } };
}
"#,
r#"
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _default = function _default(_a) {
return {
a: function a() {
return _a;
}
};
};
exports.default = _default;
"#
);
// issues_7199
test!(
// Not important
ignore,
syntax(),
|_| function_name(),
issues_7199,
r#"
const x = {
[null]: function () {},
[/regex/gi]: function () {},
[`y`]: function () {},
[`abc${y}def`]: function () {},
[0]: function () {},
[false]: function () {},
};
"#,
r#"
const x = {
[null]: function _null() {},
[/regex/gi]: function _regex_gi() {},
[`y`]: function y() {},
[`abc${y}def`]: function abcdef() {},
[0]: function _() {},
[false]: function _false() {}
};
"#
);
//// function_name_export_default_arrow_renaming_3
//test!(syntax(),|_| tr("{
// "presets": ["env", "react"]
//}
//"), function_name_export_default_arrow_renaming_3, r#"
//export default ({ onClick }) => (
// <div onClick={() => onClick()} />
//)
//
//
//"#, r#"
//"use strict";
//
//Object.defineProperty(exports, "__esModule", {
// value: true
//});
//exports["default"] = void 0;
//
//var _default = function _default(_ref) {
// var _onClick = _ref.onClick;
// return React.createElement("div", {
// onClick: function onClick() {
// return _onClick();
// }
// });
//};
//
//exports["default"] = _default;
//
//"#);
//// function_name_export_default_arrow_renaming_es3
//test!(syntax(),|_| tr("{
// "presets": ["env"],
// "plugins": [
// "transform-member-expression-literals",
// "transform-property-literals"
// ]
//}
//"), function_name_export_default_arrow_renaming_es3, r#"
//export default (a) => {
// return { a() { return a } };
//}
//
//"#, r#"
//"use strict";
//
//Object.defineProperty(exports, "__esModule", {
// value: true
//});
//exports["default"] = void 0;
//
//var _default = function _default(_a) {
// return {
// a: function a() {
// return _a;
// }
// };
//};
//
//exports["default"] = _default;
//
//"#);
// function_name_self_reference
test!(
// not important
ignore,
syntax(),
|t| chain!(
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resolver(),
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
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function_name(),
classes(Some(t.comments.clone()),)
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),
function_name_self_reference,
r#"
var f = function () {
console.log(f, g);
};
f = null;
"#,
r#"
var _f = function f() {
console.log(_f, g);
};
_f = null;
"#
);
// function_name_with_arrow_functions_transform_spec
test!(
ignore,
syntax(),
|_| chain!(arrow(), function_name()),
function_name_with_arrow_functions_transform_spec,
r#"
// These are actually handled by transform-arrow-functions
const x = () => x;
const y = x => x();
const z = { z: () => y(x) }.z;
"#,
r#"
var _this = this;
// These are actually handled by transform-arrow-functions
const _x = function x() {
_newArrowCheck(this, _this);
return _x;
}.bind(this);
const y = function y(x) {
_newArrowCheck(this, _this);
return x();
}.bind(this);
const z = {
z: function z() {
_newArrowCheck(this, _this);
return y(_x);
}.bind(this)
}.z;
"#
);
// function_name_method_definition
test!(
syntax(),
|t| chain!(
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resolver(),
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
classes(Some(t.comments.clone()),),
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function_name(),
),
function_name_method_definition,
r#"
({ x() {} });
"#,
r#"
({
x() {}
});
"#
);
// function_name_export_default_arrow_renaming_module_es6
test!(
ignore,
syntax(),
|_| chain!(arrow(), shorthand(), function_name()),
function_name_export_default_arrow_renaming_module_es6,
r#"
export default (a) => {
return { a() { return a } };
}
"#,
r#"
export default (function (_a) {
return {
a: function a() {
return _a;
}
};
});
"#
);
// function_name_assignment
test!(
// not important
ignore,
syntax(),
|_| tr(),
function_name_assignment,
r#"
var i = function () {
i = 5;
};
var j = function () {
({ j } = 5);
({ y: j } = 5);
;
};
"#,
r#"
var i = function i1() {
i = 5;
};
var j = function j1() {
({ j } = 5);
({ y: j } = 5);
;
};
"#
);
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// function_name_own_bindings
test!(
// not important
ignore,
syntax(),
|t| chain!(
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resolver(),
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
classes(Some(t.comments.clone()),),
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function_name(),
),
function_name_own_bindings,
r#"
var f = function () {
var f = 2;
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};
var g = function (g) {
g;
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};
var obj = {
f: function (f) {
f;
}
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};
"#,
r#"
var f = function f() {
var f = 2;
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};
var g = function g(_g) {
_g;
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};
var obj = {
f: function f(_f) {
_f;
}
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};
"#
);
// decorators_legacy_interop_strict
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test!(
// See: https://github.com/swc-project/swc/issues/421
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ignore,
syntax(),
|t| chain!(
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
class_properties(class_properties::Config { loose: false }),
classes(Some(t.comments.clone()),),
),
decorators_legacy_interop_strict,
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r#"
function dec() {}
class A {
@dec a;
@dec b = 123;
c = 456;
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}
"#,
r#"
var _class, _descriptor, _descriptor2, _temp;
function dec() {}
let A = (_class = (_temp = function A() {
"use strict";
_classCallCheck(this, A);
_initializerDefineProperty(this, "a", _descriptor, this);
_initializerDefineProperty(this, "b", _descriptor2, this);
_defineProperty(this, "c", 456);
}, _temp), (_descriptor = _applyDecoratedDescriptor(_class.prototype, "a", [dec], {
configurable: true,
enumerable: true,
writable: true,
initializer: null
}), _descriptor2 = _applyDecoratedDescriptor(_class.prototype, "b", [dec], {
configurable: true,
enumerable: true,
writable: true,
initializer: function () {
return 123;
}
})), _class);
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"#
);
// function_name_function_collision
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test!(
ignore,
syntax(),
|t| chain!(
resolver(),
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
classes(Some(t.comments.clone()),),
function_name(),
),
function_name_function_collision,
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r#"
function f() {
f;
}
{
let obj = {
f: function () {
f;
}
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};
}
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(function b() {
var obj = {
b: function () {
b;
}
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};
function commit(b) {
b();
}
});
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"#,
r#"
function _f() {
_f;
}
{
let obj = {
f: function f() {
_f;
}
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};
}
(function _b() {
var obj = {
b: function b() {
_b;
}
};
function commit(b) {
b();
}
});
"#
);
// function_name_collisions
test!(
syntax(),
|t| chain!(
resolver(),
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
classes(Some(t.comments.clone()),),
function_name(),
),
function_name_collisions,
r#"
var obj = {
search: function({search}) {
console.log(search);
}
};
function search({search}) {
console.log(search);
}
"#,
r#"
var obj = {
search: function search1({
search
}) {
console.log(search);
}
};
function search2({ search }) {
console.log(search);
}
"#
);
// function_name_modules_2
test!(
ignore,
Default::default(),
|t| chain!(
resolver(),
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
classes(Some(t.comments.clone()),),
function_name(),
common_js(Mark::fresh(Mark::root()), Default::default(), None)
),
function_name_modules_2,
r#"
import last from "lodash/last"
export default class Container {
last(key) {
if (!this.has(key)) {
return;
}
return last(this.tokens.get(key))
}
}
"#,
r#"
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _last2 = _interopRequireDefault(require("lodash/last"));
let Container =
/*#__PURE__*/
function () {
function Container() {
_classCallCheck(this, Container);
}
_createClass(Container, [{
key: "last",
value: function last(key) {
if (!this.has(key)) {
return;
}
return (0, _last2.default)(this.tokens.get(key));
}
}]);
return Container;
}();
exports.default = Container;
"#
);
// function_name_await
test!(
Default::default(),
|t| chain!(
resolver(),
decorators(decorators::Config {
legacy: true,
..Default::default()
}),
classes(Some(t.comments.clone()),),
function_name(),
),
function_name_await,
r#"
export {};
var obj = { await: function () {} };
"#,
r#"
export {};
var obj = {
await: function _await() {}
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};
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"#
);