discord.js/src/client/rest/UserAgentManager.js

const Constants = require('../../util/Constants');

class UserAgentManager {
  constructor(restManager) {
    this.restManager = restManager;
    this._userAgent = {
      url: 'https://github.com/hydrabolt/discord.js',
      version: Constants.Package.version,
    };
  }

  set(info) {
    this._userAgent.url = info.url || 'https://github.com/hydrabolt/discord.js';
    this._userAgent.version = info.version || Constants.Package.version;
  }

  get userAgent() {
    return `DiscordBot (${this._userAgent.url}, ${this._userAgent.version})`;
  }
}

module.exports = UserAgentManager;