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RubaXa/tuple-vs-const.ts

Last active December 20, 2019 09:34
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Tuple vs. <const>
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tuple-vs-const.ts
let tuple = createTuple('foo', true, { bar: 2019 });
// 1. readonly [string, boolean, { bar: number }]
let constArray = <const>['foo', true, { bar: 2019 }];
// 2. readonly [string, boolean, { bar: number }]
let justArray = ['foo', true, { bar: 2019 }];
// 3. (string | boolean | { bar: number })
function createTuple<T extends any[]>(...args: T): Readonly<T> {
return args;
}
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