packages/remote-context/src/actions/LocalDeletePropertyAction.js

/**
 * Copyright 2017 Moshe Simantov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import ReferencePropertyAction from './ReferencePropertyAction';

export default class LocalDeletePropertyAction extends ReferencePropertyAction {
  static fromRemote(session, reference, property) {
    return this.fromProperty(session, reference, property);
  }

  fetch(session) {
    const target = session.get(this.reference);

    if (!session.isWritable(target)) {
      throw new TypeError(
        `Can't delete property of a read-only object: ${target}`
      );
    }

    const property = session.fetch(this.property);

    return Reflect.deleteProperty(target, property);
  }

  exec(session) {
    this.fetch(session);
  }
}