TypeScript/tests/cases/fourslash/referencesForContextuallyTypedUnionProperties.ts

43 lines
1.1 KiB
TypeScript

/// <reference path='fourslash.ts'/>
////interface A {
//// a: number;
//// [|common|]: string;
////}
////
////interface B {
//// b: number;
//// [|common|]: number;
////}
////
////// Assignment
////var v1: A | B = { a: 0, [|common|]: "" };
////var v2: A | B = { b: 0, [|common|]: 3 };
////
////// Function call
////function consumer(f: A | B) { }
////consumer({ a: 0, b: 0, [|common|]: 1 });
////
////// Type cast
////var c = <A | B> { [|common|]: 0, b: 0 };
////
////// Array literal
////var ar: Array<A|B> = [{ a: 0, [|common|]: "" }, { b: 0, [|common|]: 0 }];
////
////// Nested object literal
////var ob: { aorb: A|B } = { aorb: { b: 0, [|common|]: 0 } };
////
////// Widened type
////var w: A|B = { a:0, [|common|]: undefined };
////
////// Untped -- should not be included
////var u1 = { a: 0, b: 0, common: "" };
////var u2 = { b: 0, common: 0 };
const all = test.ranges();
const [aCommon, bCommon, ...unionRefs] = all;
verify.referencesOf(aCommon, [aCommon, ...unionRefs]);
verify.referencesOf(bCommon, [bCommon, ...unionRefs]);
for (const ref of unionRefs) {
verify.referencesOf(ref, all);
}