prepack/lib/debugger/server/ReferenceMap.js

Execute a JS bundle, serialize global state and side effects to a snapshot that can be quickly restored.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.ReferenceMap = void 0;

/**
 * Copyright (c) 2017-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

/*  strict */
// A map with an incrementing counter as the keys
// Used to store references to variable collections since DebugProtocol
// specifies fetching variable collections via unique IDs
class ReferenceMap {
  constructor() {
    this._counter = 0;
    this._mapping = new Map();
  }

  add(value) {
    this._counter++;

    this._mapping.set(this._counter, value);

    return this._counter;
  }

  get(reference) {
    return this._mapping.get(reference);
  }

  clean() {
    this._counter = 0;
    this._mapping = new Map();
  }

}

exports.ReferenceMap = ReferenceMap;
//# sourceMappingURL=ReferenceMap.js.map