haste-server/lib/key_generators/random.js

module.exports = class RandomKeyGenerator {

  // Initialize a new generator with the given keySpace
  constructor(options = {}) {
    this.keyspace = options.keyspace || 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
  }

  // Generate a key of the given length
  createKey(keyLength) {
    var text = '';

    for (var i = 0; i < keyLength; i++) {
      const index = Math.floor(Math.random() * this.keyspace.length);
      text += this.keyspace.charAt(index);
    }

    return text;
  }

};