get targets() {
    if (this._targets) {
      return this._targets;
    }
    let configPath = 'config';

    if (this.pkg['ember-addon'] && this.pkg['ember-addon']['configPath']) {
      configPath = this.pkg['ember-addon']['configPath'];
    }

    let targetsPath = path.join(this.root, configPath, 'targets');

    if (fs.existsSync(`${targetsPath}.js`)) {
      this._targets = this.require(targetsPath);
    } else {
      this._targets = { browsers: ['last 1 Chrome versions', 'last 1 Firefox versions', 'last 1 Safari versions'] };
    }
    return this._targets;
  }
Returns the targets of this project, or the default targets if not present.

    @public
    @property targets
    @return {Object}  Targets object