Method serialize

packages/base/src/widget.ts:563–584

* Serialize widget state. * * A serializer is a function which takes in a state attribute and a widget, * and synchronously returns a JSONable object. The returned object will * have toJSON called if possible, and the final result should be a * primitive object that is a snapshot of t

(state: Dict<any>)

   * binary array buffers.
   */
  serialize(state: Dict<any>): JSONObject {
    const serializers =
      (this.constructor as typeof WidgetModel).serializers ||
      JSONExt.emptyObject;
    for (const k of Object.keys(state)) {
      try {
        if (serializers[k] && serializers[k].serialize) {
          state[k] = serializers[k].serialize!(state[k], this);
        } else {
          // the default serializer just deep-copies the object
          state[k] = JSON.parse(JSON.stringify(state[k]));
        }
        if (state[k] && state[k].toJSON) {
          state[k] = state[k].toJSON();
        }
      } catch (e) {
        console.error('Error serializing widget state attribute: ', k);
        throw e;
      }
    }
    return state;
  }

  /**
   * Send a sync message to the kernel.