53 lines
1.6 KiB
TypeScript
53 lines
1.6 KiB
TypeScript
//// [objectSpreadUnion.ts]
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// concrete types work
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interface A1 { a: number }
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interface A2 { a: string }
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let a12: A1 | A2;
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let result = { ...a12 };
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let sn: number | string = result.a;
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let assignable: { ...(A1 | A2) } = result;
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function tripleUnion<T, U, V>(t: T, u: U, v: V): void {
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let tuv: T | U | V;
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let result = { ...tuv, id: 'foo' };
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let expected: { ...T, id: string } | { ...U, id: string } | { ...V, id: string } = result;
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let assignable: { ...(T | U | V), id: string } = result;
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}
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function iteratedDoubleUnion<T, U, V>(t: T, u: U, v: V): void {
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let tu: T | U;
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let uv: U | V;
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let result = { ...tu, ...uv, id: 'bar' };
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let expected: { ...T, ...U, id: string } | { ...T, ...V, id: string } | { ...U, id: string } | { ...U, ...V, id: string };
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let assignable: { ...(T | U), ...(U | V), id: string } = result;
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}
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//// [objectSpreadUnion.js]
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var __assign = (this && this.__assign) || Object.assign || function(t) {
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for (var s, i = 1, n = arguments.length; i < n; i++) {
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s = arguments[i];
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
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t[p] = s[p];
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}
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return t;
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};
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var a12;
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var result = __assign({}, a12);
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var sn = result.a;
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var assignable = result;
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function tripleUnion(t, u, v) {
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var tuv;
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var result = __assign({}, tuv, { id: 'foo' });
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var expected = result;
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var assignable = result;
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}
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function iteratedDoubleUnion(t, u, v) {
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var tu;
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var uv;
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var result = __assign({}, tu, uv, { id: 'bar' });
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var expected;
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var assignable = result;
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}
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