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