mirror of
https://github.com/swc-project/swc.git
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53 lines
1.1 KiB
TypeScript
53 lines
1.1 KiB
TypeScript
// @strict: true
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// @target: esnext, es2021, es2020, es2015
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// @allowUnreachableCode: false
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function foo1(results: number[] | undefined) {
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(results ||= []).push(100);
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}
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function foo2(results: number[] | undefined) {
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(results ??= []).push(100);
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}
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function foo3(results: number[] | undefined) {
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results ||= [];
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results.push(100);
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}
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function foo4(results: number[] | undefined) {
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results ??= [];
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results.push(100);
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}
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interface ThingWithOriginal {
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name: string;
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original?: ThingWithOriginal
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}
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declare const v: number
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function doSomethingWithAlias(thing: ThingWithOriginal | undefined, defaultValue: ThingWithOriginal | undefined) {
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if (v === 1) {
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if (thing &&= thing.original) {
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thing.name;
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}
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}
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else if (v === 2) {
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if (thing &&= defaultValue) {
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thing.name;
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defaultValue.name
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}
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}
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else if (v === 3) {
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if (thing ||= defaultValue) {
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thing.name;
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defaultValue.name;
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}
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}
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else {
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if (thing ??= defaultValue) {
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thing.name;
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defaultValue.name;
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}
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}
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}
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