e8bf9584aa
* Improve typing for Generators and Async Generators * Add TReturn and TNext to Iterator, IterableIterator, etc. * Update ts internal Iterator to be assignable from global Iterator * Make 'done' optional in IteratorYieldResult * Revert Iterable and IterableIterator to simpler versions plus other fixes * Add additional inference tests * Added additional tests * PR cleanup and minor async iteration type fix * Updated diagnostics message and added non-strict tests * Fix expected arity of Iterator/AsyncIterator
74 lines
1.7 KiB
TypeScript
74 lines
1.7 KiB
TypeScript
// @target: esnext
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// @strict: true
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// @noEmit: true
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declare let _: any;
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declare const g1: Generator<number, void, string>;
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declare const g2: Generator<number, void, undefined>;
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declare const g3: Generator<number, void, boolean>;
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declare const g4: AsyncGenerator<number, void, string>;
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declare const g5: AsyncGenerator<number, void, undefined>;
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declare const g6: AsyncGenerator<number, void, boolean>;
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// spread iterable
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[...g1]; // error
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[...g2]; // ok
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// binding pattern over iterable
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let [x1] = g1; // error
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let [x2] = g2; // ok
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// binding rest pattern over iterable
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let [...y1] = g1; // error
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let [...y2] = g2; // ok
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// assignment pattern over iterable
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[_] = g1; // error
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[_] = g2; // ok
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// assignment rest pattern over iterable
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[..._] = g1; // error
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[..._] = g2; // ok
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// for-of over iterable
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for (_ of g1); // error
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for (_ of g2); // ok
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async function asyncfn() {
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// for-await-of over iterable
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for await (_ of g1); // error
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for await (_ of g2); // ok
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// for-await-of over asynciterable
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for await (_ of g4); // error
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for await (_ of g5); // ok
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}
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function* f1(): Generator<number, void, boolean> {
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// yield* over iterable
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yield* g1; // error
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yield* g3; // ok
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}
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async function* f2(): AsyncGenerator<number, void, boolean> {
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// yield* over iterable
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yield* g1; // error
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yield* g3; // ok
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// yield* over asynciterable
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yield* g4; // error
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yield* g6; // ok
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}
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async function f3() {
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const syncGenerator = function*() {
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yield 1;
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yield 2;
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};
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const o = {[Symbol.asyncIterator]: syncGenerator};
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for await (const x of o) {
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}
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}
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