8b83703632
* Properly strip readonlyness from rest argument types * Add tests * Accept new baselines
68 lines
1.8 KiB
TypeScript
68 lines
1.8 KiB
TypeScript
// @strict: true
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// @declaration: true
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declare let f1: (x: string, ...args: [string] | [number, boolean]) => void;
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declare let f2: (x: string, y: string) => void;
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declare let f3: (x: string, y: number, z: boolean) => void;
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declare let f4: (...args: [string, string] | [string, number, boolean]) => void;
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declare const t1: [string] | [number, boolean];
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declare const t2: readonly [string] | [number, boolean];
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declare const t3: [string] | readonly [number, boolean];
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declare const t4: readonly [string] | readonly [number, boolean];
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f1("foo", "abc");
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f1("foo", 10, true);
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f1("foo", ...t1);
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f1("foo", ...t2);
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f1("foo", ...t3);
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f1("foo", ...t4);
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f1("foo", 10); // Error
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f1("foo"); // Error
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f2 = f1;
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f3 = f1;
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f4 = f1; // Error, misaligned complex rest types
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f1 = f2; // Error
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f1 = f3; // Error
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f1 = f4; // Error, misaligned complex rest types
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// Repro from #26110
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interface CoolArray<E> extends Array<E> {
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hello: number;
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}
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declare function foo<T extends any[]>(cb: (...args: T) => void): void;
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foo<CoolArray<any>>(); // Error
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foo<CoolArray<any>>(100); // Error
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foo<CoolArray<any>>(foo); // Error
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function bar<T extends any[]>(...args: T): T {
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return args;
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}
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let a = bar(10, 20);
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let b = bar<CoolArray<number>>(10, 20); // Error
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declare function baz<T>(...args: CoolArray<T>): void;
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declare const ca: CoolArray<number>;
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baz(); // Error
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baz(1); // Error
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baz(1, 2); // Error
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baz(...ca); // Error
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// Repro from #26491
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declare function hmm<A extends [] | [number, string]>(...args: A): void;
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hmm(); // okay, A = []
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hmm(1, "s"); // okay, A = [1, "s"]
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hmm("what"); // no error? A = [] | [number, string] ?
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// Repro from #35066
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declare function foo2(...args: string[] | number[]): void;
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let x2: ReadonlyArray<string> = ["hello"];
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foo2(...x2);
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