function isUtf8 Usage in Deno```typescript import { isUtf8 } from "node:node__buffer.d.ts"; ``` isUtf8(input: Buffer | ArrayBuffer | TypedArray): boolean This function returns `true` if `input` contains only valid UTF-8-encoded data, including the case in which `input` is empty. Throws if the `input` is a detached array buffer. Parameters input: Buffer | ArrayBuffer | TypedArray The input to validate. Return Type boolean