87d10eb055
* Eliminate well-known symbols in the checker: 2021 edition * Actually update the lib text to say unique symbol, too (this is unneeded with compat code in place, but this makes goto-def make more sense) * Add test showing mismatched symbol constructor type interop * Add more test cases for some other related issues this fixes * Revert computed name change * Style comments
178 lines
4.3 KiB
Plaintext
178 lines
4.3 KiB
Plaintext
=== tests/cases/conformance/generators/generatorAssignability.ts ===
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declare let _: any;
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>_ : any
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declare const g1: Generator<number, void, string>;
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>g1 : Generator<number, void, string>
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declare const g2: Generator<number, void, undefined>;
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>g2 : Generator<number, void, undefined>
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declare const g3: Generator<number, void, boolean>;
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>g3 : Generator<number, void, boolean>
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declare const g4: AsyncGenerator<number, void, string>;
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>g4 : AsyncGenerator<number, void, string>
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declare const g5: AsyncGenerator<number, void, undefined>;
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>g5 : AsyncGenerator<number, void, undefined>
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declare const g6: AsyncGenerator<number, void, boolean>;
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>g6 : AsyncGenerator<number, void, boolean>
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// spread iterable
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[...g1]; // error
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>[...g1] : number[]
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>...g1 : number
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>g1 : Generator<number, void, string>
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[...g2]; // ok
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>[...g2] : number[]
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>...g2 : number
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>g2 : Generator<number, void, undefined>
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// binding pattern over iterable
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let [x1] = g1; // error
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>x1 : number
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>g1 : Generator<number, void, string>
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let [x2] = g2; // ok
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>x2 : number
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>g2 : Generator<number, void, undefined>
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// binding rest pattern over iterable
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let [...y1] = g1; // error
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>y1 : number[]
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>g1 : Generator<number, void, string>
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let [...y2] = g2; // ok
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>y2 : number[]
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>g2 : Generator<number, void, undefined>
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// assignment pattern over iterable
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[_] = g1; // error
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>[_] = g1 : Generator<number, void, string>
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>[_] : [any]
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>_ : any
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>g1 : Generator<number, void, string>
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[_] = g2; // ok
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>[_] = g2 : Generator<number, void, undefined>
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>[_] : [any]
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>_ : any
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>g2 : Generator<number, void, undefined>
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// assignment rest pattern over iterable
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[..._] = g1; // error
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>[..._] = g1 : Generator<number, void, string>
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>[..._] : any[]
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>..._ : any
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>_ : any
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>g1 : Generator<number, void, string>
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[..._] = g2; // ok
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>[..._] = g2 : Generator<number, void, undefined>
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>[..._] : any[]
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>..._ : any
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>_ : any
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>g2 : Generator<number, void, undefined>
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// for-of over iterable
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for (_ of g1); // error
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>_ : any
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>g1 : Generator<number, void, string>
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for (_ of g2); // ok
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>_ : any
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>g2 : Generator<number, void, undefined>
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async function asyncfn() {
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>asyncfn : () => Promise<void>
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// for-await-of over iterable
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for await (_ of g1); // error
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>_ : any
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>g1 : Generator<number, void, string>
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for await (_ of g2); // ok
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>_ : any
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>g2 : Generator<number, void, undefined>
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// for-await-of over asynciterable
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for await (_ of g4); // error
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>_ : any
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>g4 : AsyncGenerator<number, void, string>
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for await (_ of g5); // ok
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>_ : any
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>g5 : AsyncGenerator<number, void, undefined>
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}
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function* f1(): Generator<number, void, boolean> {
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>f1 : () => Generator<number, void, boolean>
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// yield* over iterable
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yield* g1; // error
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>yield* g1 : void
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>g1 : Generator<number, void, string>
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yield* g3; // ok
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>yield* g3 : void
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>g3 : Generator<number, void, boolean>
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}
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async function* f2(): AsyncGenerator<number, void, boolean> {
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>f2 : () => AsyncGenerator<number, void, boolean>
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// yield* over iterable
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yield* g1; // error
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>yield* g1 : void
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>g1 : Generator<number, void, string>
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yield* g3; // ok
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>yield* g3 : void
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>g3 : Generator<number, void, boolean>
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// yield* over asynciterable
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yield* g4; // error
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>yield* g4 : void
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>g4 : AsyncGenerator<number, void, string>
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yield* g6; // ok
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>yield* g6 : void
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>g6 : AsyncGenerator<number, void, boolean>
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}
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async function f3() {
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>f3 : () => Promise<void>
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const syncGenerator = function*() {
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>syncGenerator : () => Generator<1 | 2, void, unknown>
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>function*() { yield 1; yield 2; } : () => Generator<1 | 2, void, unknown>
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yield 1;
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>yield 1 : any
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>1 : 1
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yield 2;
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>yield 2 : any
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>2 : 2
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};
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const o = {[Symbol.asyncIterator]: syncGenerator};
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>o : { [Symbol.asyncIterator]: () => Generator<1 | 2, void, unknown>; }
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>{[Symbol.asyncIterator]: syncGenerator} : { [Symbol.asyncIterator]: () => Generator<1 | 2, void, unknown>; }
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>[Symbol.asyncIterator] : () => Generator<1 | 2, void, unknown>
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>Symbol.asyncIterator : unique symbol
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>Symbol : SymbolConstructor
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>asyncIterator : unique symbol
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>syncGenerator : () => Generator<1 | 2, void, unknown>
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for await (const x of o) {
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>x : 1 | 2
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>o : { [Symbol.asyncIterator]: () => Generator<1 | 2, void, unknown>; }
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}
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}
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