44c63a757e
* Always cache relations involving intersection types * Accept new baselines * Add regression test
56 lines
1.2 KiB
TypeScript
56 lines
1.2 KiB
TypeScript
//// [deepComparisons.ts]
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function f1<T, K1 extends keyof T, K2 extends keyof T[K1]>() {
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let v1: Extract<T, string> = 0 as any as T; // Error
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let v2: Extract<T[K1], string> = 0 as any as T[K1]; // Error
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let v3: Extract<T[K1][K2], string> = 0 as any as T[K1][K2]; // No error
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}
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type Foo<T> = { x: Foo<T> };
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type Bar<T> = { x: Bar<T[]> };
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function f2<U>() {
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let x: Foo<U> = 0 as any as Bar<U>; // Error, excessive stack depth
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}
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type Foo1<T> = { x: Foo2<T> };
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type Foo2<T> = { x: Foo1<T> };
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function f3<U>() {
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let x: Foo1<U> = 0 as any as Bar<U>; // No error!
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}
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// Repro from #46500
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type F<T> = {} & (
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T extends [any, ...any[]]
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? { [K in keyof T]?: F<T[K]> }
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: T extends any[]
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? F<T[number]>[]
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: T extends { [K: string]: any }
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? { [K in keyof T]?: F<T[K]> }
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: { x: string }
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);
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declare function f<T = any>(): F<T>;
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function g() {
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return f() as F<any>;
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}
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//// [deepComparisons.js]
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function f1() {
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var v1 = 0; // Error
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var v2 = 0; // Error
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var v3 = 0; // No error
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}
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function f2() {
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var x = 0; // Error, excessive stack depth
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}
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function f3() {
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var x = 0; // No error!
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}
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function g() {
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return f();
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}
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