Function onChange

packages/decap-cms-widget-file/src/withFileControl.js:299–302

(mediaPath && mediaPath === value)

      const mediaPath = mediaPaths.get(this.controlID);
      if (mediaPath && mediaPath !== value) {
        onChange(mediaPath);
      } else if (mediaPath && mediaPath === value) {
        onRemoveInsertedMedia(this.controlID);
      }
    }

    componentWillUnmount() {