prepack/lib/values/BoundFunctionValue.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.default = void 0;

var _index = require("./index.js");

var _invariant = _interopRequireDefault(require("../invariant.js"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * 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-local */

/* Bound Function Exotic Objects */
class BoundFunctionValue extends _index.FunctionValue {
  constructor(realm, intrinsicName) {
    super(realm, intrinsicName);
  }

  // Override.
  getName() {
    return "Bound";
  }

  hasDefaultLength() {
    let f = this.$BoundTargetFunction;
    if (!(f instanceof _index.FunctionValue) || !f.hasDefaultLength()) return false;
    let fl = f.getLength();
    (0, _invariant.default)(fl !== undefined);
    return this.getLength() === Math.max(fl - this.$BoundArguments.length, 0);
  }

}

exports.default = BoundFunctionValue;
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