Check if a buffer contains valid UTF-8 encoded text.

npm install utf-8-validate --save-optional

The --save-optional flag tells npm to save the package in your package.json under the optionalDependencies key.

The module exports a single function which takes one argument.

Checks whether a buffer contains valid UTF-8.

• buffer - The buffer to check.

true if the buffer contains only correct UTF-8, else false.

'use strict';

const isValidUTF8 = require('utf-8-validate');

const buf = Buffer.from([0xf0, 0x90, 0x80, 0x80]);

console.log(isValidUTF8(buf));
// => true

MIT