@atlaskit/editor-plugin-extension/dist/es2019/pm-plugins/reducer.js

editor-plugin-extension plugin for @atlaskit/editor-core

export default function (pluginState, action) {
  switch (action.type) {
    case 'UPDATE_STATE':
      return {
        ...pluginState,
        ...action.data
      };
    default:
      return pluginState;
  }
}