node-err/examples/node_modules/crypto-random-string/index.js

Simplify error handling and logging for Node.

'use strict';
const crypto = require('crypto');

module.exports = len => {
	if (!Number.isFinite(len)) {
		throw new TypeError('Expected a finite number');
	}

	return crypto.randomBytes(Math.ceil(len / 2)).toString('hex').slice(0, len);
};