Function keyMode

chapter24/docs/d3-graphviz.js:1305–1314

(keyMode)

  }

  function keyMode (keyMode) {
    if (!this._keyModes.has(keyMode)) {
      throw Error('Illegal keyMode: ' + keyMode);
    }
    if (keyMode != this._options.keyMode && this._data != null) {
      throw Error('Too late to change keyMode');
    }
    this._options.keyMode = keyMode;
    return this;
  }

  function fade (enable) {
    this._options.fade = enable;