import { Buffer } from "https://deno.land/x/deno@v2.0.4/ext/node/polyfills/buffer.ts";
Returns true if encoding is the name of a supported character encoding,
or false otherwise.
import { Buffer } from "ext:deno_node/internal/buffer";
console.log(Buffer.isEncoding('utf8'));
// Prints: true
console.log(Buffer.isEncoding('hex'));
// Prints: true
console.log(Buffer.isEncoding('utf/8'));
// Prints: false
console.log(Buffer.isEncoding(''));
// Prints: false