develwoutacause’s avatardevelwoutacause’s Twitter Archive—№ 476

  1. In today's #WTF #TypeScript, I present the following snippet, which compiles and runs without error, yet gives the complete wrong answer. Hint: Uint8Array does not extend ArrayBuffer.
    A TypeScript code snippet with the following content: ``` function normalize(input: ArrayBuffer | string): ArrayBuffer { if (input instanceof ArrayBuffer) return input; return new TextEncoder().encode(input); } console.log(normalize(new Uint8Array([ 0, 1, 2, 3 ]))); // Uint8Array(7) [ 48, 44, 49, 44, 50, 44, 51 ] - Wat? ```
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