Huáng Jùnliàng 1e115aed33
fix: ensure (a?.b)() has proper this (#11623)
* fix: ensure (a?.b)() has proper this

* let test be more restrictive

* fix: transformed member call should preserve computed

* chore: revamp test files

* refactor: simplify

* fix: unwrap parthenthesizedExpression

* add loose test cases

* add `(a?.#b)()` support

* add with-transform test cases

* Update packages/babel-plugin-proposal-optional-chaining/src/index.js

Co-authored-by: Justin Ridgewell <justin@ridgewell.name>

* address review comments

* update test fixtures

Co-authored-by: Justin Ridgewell <justin@ridgewell.name>
2020-06-01 10:25:22 -04:00

52 lines
1.4 KiB
JavaScript

class Foo {
constructor() {
this.x = 1;
this.self = this;
}
m() { return this.x; };
getSelf() { return this }
test() {
const Foo = this;
const o = { Foo: Foo };
const fn = function () {
return o;
};
expect((Foo?.["m"])()).toEqual(1);
expect((Foo?.["m"])().toString).toEqual(1..toString);
expect((Foo?.["m"])().toString()).toEqual('1');
expect(((Foo?.["m"]))()).toEqual(1);
expect(((Foo?.["m"]))().toString).toEqual(1..toString);
expect(((Foo?.["m"]))().toString()).toEqual('1');
expect((o?.Foo.m)()).toEqual(1);
expect((o?.Foo.m)().toString).toEqual(1..toString);
expect((o?.Foo.m)().toString()).toEqual('1');
expect((((o.Foo?.self.getSelf)())?.m)()).toEqual(1);
expect((((o.Foo.self?.getSelf)())?.m)()).toEqual(1);
expect((((fn()?.Foo?.self.getSelf)())?.m)()).toEqual(1);
expect((((fn?.().Foo.self?.getSelf)())?.m)()).toEqual(1);
}
testNull() {
const o = null;
expect(() => { (o?.Foo.m)() }).toThrow();
expect(() => { (o?.Foo.m)().toString }).toThrow();
expect(() => { (o?.Foo.m)().toString() }).toThrow();
expect(() => { (((o.Foo?.self.getSelf)())?.m)() }).toThrow();
expect(() => { (((o.Foo.self?.getSelf)())?.m)() }).toThrow();
expect(() => (((fn()?.Foo?.self.getSelf)())?.m)()).toThrow();
expect(() => (((fn?.().Foo.self?.getSelf)())?.m)()).toThrow();
}
}
(new Foo).test();
(new Foo).testNull();