text: "use strict";
  
  const conversions = require("webidl-conversions");
  const utils = require("./utils.js");
  
  const Node = require("./Node.js");
  const ceReactionsPreSteps_helpers_custom_elements = require("../helpers/custom-elements.js").ceReactionsPreSteps;
  const ceReactionsPostSteps_helpers_custom_elements = require("../helpers/custom-elements.js").ceReactionsPostSteps;
  const implSymbol = utils.implSymbol;
  const ctorRegistrySymbol = utils.ctorRegistrySymbol;
  
  const interfaceName = "DocumentFragment";
  
  exports.is = value => {
    return utils.isObject(value) && utils.hasOwn(value, implSymbol) && value[implSymbol] instanceof Impl.implementation;
  };
  exports.isImpl = value => {
    return utils.isObject(value) && value instanceof Impl.implementation;
  };
  exports.convert = (value, { context = "The provided value" } = {}) => {
    if (exports.is(value)) {
      return utils.implForWrapper(value);
    }
    throw new TypeError(`${context} is not of type 'DocumentFragment'.`);
  };
  
  function makeWrapper(globalObject) {
    if (globalObject[ctorRegistrySymbol] === undefined) {
      throw new Error("Internal error: invalid global object");
    }
  
    const ctor = globalObject[ctorRegistrySymbol]["DocumentFragment"];
    if (ctor === undefined) {
      throw new Error("Internal error: constructor DocumentFragment is not installed on the passed global object");
    }
  
    return Object.create(ctor.prototype);
  }
  
  exports.create = (globalObject, constructorArgs, privateData) => {
    const wrapper = makeWrapper(globalObject);
    return exports.setup(wrapper, globalObject, constructorArgs, privateData);
  };
  
  exports.createImpl = (globalObject, constructorArgs, privateData) => {
    const wrapper = exports.create(globalObject, constructorArgs, privateData);
    return utils.implForWrapper(wrapper);
  };
  
  exports._internalSetup = (wrapper, globalObject) => {
    Node._internalSetup(wrapper, globalObject);
  };
  
  exports.setup = (wrapper, globalObject, constructorArgs = [], privateData = {}) => {
    privateData.wrapper = wrapper;
  
    exports._internalSetup(wrapper, globalObject);
    Object.defineProperty(wrapper, implSymbol, {
      value: new Impl.implementation(globalObject, constructorArgs, privateData),
      configurable: true
    });
  
    wrapper[implSymbol][utils.wrapperSymbol] = wrapper;
    if (Impl.init) {
      Impl.init(wrapper[implSymbol]);
    }
    return wrapper;
  };
  
  exports.new = globalObject => {
    const wrapper = makeWrapper(globalObject);
  
    exports._internalSetup(wrapper, globalObject);
    Object.defineProperty(wrapper, implSymbol, {
      value: Object.create(Impl.implementation.prototype),
      configurable: true
    });
  
    wrapper[implSymbol][utils.wrapperSymbol] = wrapper;
    if (Impl.init) {
      Impl.init(wrapper[implSymbol]);
    }
    return wrapper[implSymbol];
  };
  
  const exposed = new Set(["Window"]);
  
  exports.install = (globalObject, globalNames) => {
    if (!globalNames.some(globalName => exposed.has(globalName))) {
      return;
    }
  
    if (globalObject.Node === undefined) {
      throw new Error("Internal error: attempting to evaluate DocumentFragment before Node");
    }
    class DocumentFragment extends globalObject.Node {
      constructor() {
        return exports.setup(Object.create(new.target.prototype), globalObject, undefined);
      }
  
      getElementById(elementId) {
        const esValue = this !== null && this !== undefined ? this : globalObject;
        if (!exports.is(esValue)) {
          throw new TypeError("Illegal invocation");
        }
  
        if (arguments.length < 1) {
          throw new TypeError(
            "Failed to execute 'getElementById' on 'DocumentFragment': 1 argument required, but only " +
              arguments.length +
              " present."
          );
        }
        const args = [];
        {
          let curArg = arguments[0];
          curArg = conversions["DOMString"](curArg, {
            context: "Failed to execute 'getElementById' on 'DocumentFragment': parameter 1"
          });
          args.push(curArg);
        }
        return utils.tryWrapperForImpl(esValue[implSymbol].getElementById(...args));
      }
  
      prepend() {
        const esValue = this !== null && this !== undefined ? this : globalObject;
        if (!exports.is(esValue)) {
          throw new TypeError("Illegal invocation");
        }
        const args = [];
        for (let i = 0; i < arguments.length; i++) {
          let curArg = arguments[i];
          if (Node.is(curArg)) {
            curArg = utils.implForWrapper(curArg);
          } else {
            curArg = conversions["DOMString"](curArg, {
              context: "Failed to execute 'prepend' on 'DocumentFragment': parameter " + (i + 1)
            });
          }
          args.push(curArg);
        }
        ceReactionsPreSteps_helpers_custom_elements(globalObject);
        try {
          return esValue[implSymbol].prepend(...args);
        } finally {
          ceReactionsPostSteps_helpers_custom_elements(globalObject);
        }
      }
  
      append() {
        const esValue = this !== null && this !== undefined ? this : globalObject;
        if (!exports.is(esValue)) {
          throw new TypeError("Illegal invocation");
        }
        const args = [];
        for (let i = 0; i < arguments.length; i++) {
          let curArg = arguments[i];
          if (Node.is(curArg)) {
            curArg = utils.implForWrapper(curArg);
          } else {
            curArg = conversions["DOMString"](curArg, {
              context: "Failed to execute 'append' on 'DocumentFragment': parameter " + (i + 1)
            });
          }
          args.push(curArg);
        }
        ceReactionsPreSteps_helpers_custom_elements(globalObject);
        try {
          return esValue[implSymbol].append(...args);
        } finally {
          ceReactionsPostSteps_helpers_custom_elements(globalObject);
        }
      }
  
      querySelector(selectors) {
        const esValue = this !== null && this !== undefined ? this : globalObject;
        if (!exports.is(esValue)) {
          throw new TypeError("Illegal invocation");
        }
  
        if (arguments.length < 1) {
          throw new TypeError(
            "Failed to execute 'querySelector' on 'DocumentFragment': 1 argument required, but only " +
              arguments.length +
              " present."
          );
        }
        const args = [];
        {
          let curArg = arguments[0];
          curArg = conversions["DOMString"](curArg, {
            context: "Failed to execute 'querySelector' on 'DocumentFragment': parameter 1"
          });
          args.push(curArg);
        }
        return utils.tryWrapperForImpl(esValue[implSymbol].querySelector(...args));
      }
  
      querySelectorAll(selectors) {
        const esValue = this !== null && this !== undefined ? this : globalObject;
        if (!exports.is(esValue)) {
          throw new TypeError("Illegal invocation");
        }
  
        if (arguments.length < 1) {
          throw new TypeError(
            "Failed to execute 'querySelectorAll' on 'DocumentFragment': 1 argument required, but only " +
              arguments.length +
              " present."
          );
        }
        const args = [];
        {
          let curArg = arguments[0];
          curArg = conversions["DOMString"](curArg, {
            context: "Failed to execute 'querySelectorAll' on 'DocumentFragment': parameter 1"
          });
          args.push(curArg);
        }
        return utils.tryWrapperForImpl(esValue[implSymbol].querySelectorAll(...args));
      }
  
      get children() {
        const esValue = this !== null && this !== undefined ? this : globalObject;
  
        if (!exports.is(esValue)) {
          throw new TypeError("Illegal invocation");
        }
  
        return utils.getSameObject(this, "children", () => {
          return utils.tryWrapperForImpl(esValue[implSymbol]["children"]);
        });
      }
  
      get firstElementChild() {
        const esValue = this !== null && this !== undefined ? this : globalObject;
  
        if (!exports.is(esValue)) {
          throw new TypeError("Illegal invocation");
        }
  
        return utils.tryWrapperForImpl(esValue[implSymbol]["firstElementChild"]);
      }
  
      get lastElementChild() {
        const esValue = this !== null && this !== undefined ? this : globalObject;
  
        if (!exports.is(esValue)) {
          throw new TypeError("Illegal invocation");
        }
  
        return utils.tryWrapperForImpl(esValue[implSymbol]["lastElementChild"]);
      }
  
      get childElementCount() {
        const esValue = this !== null && this !== undefined ? this : globalObject;
  
        if (!exports.is(esValue)) {
          throw new TypeError("Illegal invocation");
        }
  
        return esValue[implSymbol]["childElementCount"];
      }
    }
    Object.defineProperties(DocumentFragment.prototype, {
      getElementById: { enumerable: true },
      prepend: { enumerable: true },
      append: { enumerable: true },
      querySelector: { enumerable: true },
      querySelectorAll: { enumerable: true },
      children: { enumerable: true },
      firstElementChild: { enumerable: true },
      lastElementChild: { enumerable: true },
      childElementCount: { enumerable: true },
      [Symbol.toStringTag]: { value: "DocumentFragment", configurable: true },
      [Symbol.unscopables]: { value: { prepend: true, append: true, __proto__: null }, configurable: true }
    });
    if (globalObject[ctorRegistrySymbol] === undefined) {
      globalObject[ctorRegistrySymbol] = Object.create(null);
    }
    globalObject[ctorRegistrySymbol][interfaceName] = DocumentFragment;
  
    Object.defineProperty(globalObject, interfaceName, {
      configurable: true,
      writable: true,
      value: DocumentFragment
    });
  };
  
  const Impl = require("../nodes/DocumentFragment-impl.js");
  