61 lines
1.2 KiB
TypeScript
61 lines
1.2 KiB
TypeScript
//// [unionTypeInference.ts]
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// Verify that inferences made *to* a type parameter in a union type are secondary
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// to inferences made directly to that type parameter
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function f<T>(x: T, y: string|T): T {
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return x;
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}
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var a1: number;
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var a1 = f(1, 2);
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var a2: number;
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var a2 = f(1, "hello");
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var a3: number;
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var a3 = f(1, a1 || "hello");
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var a4: any;
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var a4 = f(undefined, "abc");
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function g<T>(value: [string, T]): T {
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return value[1];
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}
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var b1: boolean;
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var b1 = g(["string", true]);
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function h<T>(x: string|boolean|T): T {
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return typeof x === "string" || typeof x === "boolean" ? undefined : x;
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}
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var c1: number;
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var c1 = h(5);
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var c2: string;
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var c2 = h("abc");
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//// [unionTypeInference.js]
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// Verify that inferences made *to* a type parameter in a union type are secondary
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// to inferences made directly to that type parameter
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function f(x, y) {
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return x;
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}
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var a1;
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var a1 = f(1, 2);
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var a2;
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var a2 = f(1, "hello");
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var a3;
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var a3 = f(1, a1 || "hello");
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var a4;
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var a4 = f(undefined, "abc");
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function g(value) {
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return value[1];
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}
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var b1;
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var b1 = g(["string", true]);
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function h(x) {
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return typeof x === "string" || typeof x === "boolean" ? undefined : x;
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}
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var c1;
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var c1 = h(5);
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var c2;
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var c2 = h("abc");
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