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Thin Java abstractions for the standard built-in objects for Javascript.
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/*
 * Copyright 2018 Google Inc.
 *
 * 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.
 */
package elemental2.core;

import jsinterop.annotations.JsMethod;
import jsinterop.annotations.JsOverlay;
import jsinterop.annotations.JsPackage;
import jsinterop.annotations.JsType;
import jsinterop.base.Js;
import jsinterop.base.JsPropertyMap;

@JsType(isNative = true, name = "Object", namespace = JsPackage.GLOBAL)
public class JsObject {
  @JsType(isNative = true, name = "?", namespace = JsPackage.GLOBAL)
  public interface DefinePropertyPropUnionType {
    @JsOverlay
    static JsObject.DefinePropertyPropUnionType of(Object o) {
      return Js.cast(o);
    }

    @JsOverlay
    default Object asObject() {
      return Js.cast(this);
    }

    @JsOverlay
    default String asString() {
      return Js.asString(this);
    }

    @JsOverlay
    default boolean isObject() {
      return (Object) this instanceof Object;
    }

    @JsOverlay
    default boolean isString() {
      return (Object) this instanceof String;
    }
  }

  @JsType(isNative = true, name = "?", namespace = JsPackage.GLOBAL)
  public interface EntriesArrayArrayUnionType {
    @JsOverlay
    static JsObject.EntriesArrayArrayUnionType of(Object o) {
      return Js.cast(o);
    }

    @JsOverlay
    default String asString() {
      return Js.asString(this);
    }

    @JsOverlay
    default T asT() {
      return Js.cast(this);
    }

    @JsOverlay
    default boolean isString() {
      return (Object) this instanceof String;
    }
  }

  @JsType(isNative = true, name = "?", namespace = JsPackage.GLOBAL)
  public interface GetOwnPropertyDescriptorPropUnionType {
    @JsOverlay
    static JsObject.GetOwnPropertyDescriptorPropUnionType of(Object o) {
      return Js.cast(o);
    }

    @JsOverlay
    default Object asObject() {
      return Js.cast(this);
    }

    @JsOverlay
    default String asString() {
      return Js.asString(this);
    }

    @JsOverlay
    default boolean isObject() {
      return (Object) this instanceof Object;
    }

    @JsOverlay
    default boolean isString() {
      return (Object) this instanceof String;
    }
  }

  @JsType(isNative = true, name = "?", namespace = JsPackage.GLOBAL)
  public interface HasOwnPropertyNameUnionType {
    @JsOverlay
    static JsObject.HasOwnPropertyNameUnionType of(Object o) {
      return Js.cast(o);
    }

    @JsOverlay
    default Object asObject() {
      return Js.cast(this);
    }

    @JsOverlay
    default String asString() {
      return Js.asString(this);
    }

    @JsOverlay
    default boolean isObject() {
      return (Object) this instanceof Object;
    }

    @JsOverlay
    default boolean isString() {
      return (Object) this instanceof String;
    }
  }

  @JsType(isNative = true, name = "?", namespace = JsPackage.GLOBAL)
  public interface PropertyIsEnumerablePropertyNameUnionType {
    @JsOverlay
    static JsObject.PropertyIsEnumerablePropertyNameUnionType of(Object o) {
      return Js.cast(o);
    }

    @JsOverlay
    default Object asObject() {
      return Js.cast(this);
    }

    @JsOverlay
    default String asString() {
      return Js.asString(this);
    }

    @JsOverlay
    default boolean isObject() {
      return (Object) this instanceof Object;
    }

    @JsOverlay
    default boolean isString() {
      return (Object) this instanceof String;
    }
  }

  public static native JsObject assign(JsObject target, JsObject... var_args);

  @JsOverlay
  public static final JsObject assign(Object target, Object... var_args) {
    return assign(Js.uncheckedCast(target), Js.uncheckedCast(var_args));
  }

  public static native JsObject create(
      JsObject proto, JsPropertyMap> properties);

  public static native JsObject create(JsObject proto);

  @JsOverlay
  public static final JsObject create(
      Object proto, JsPropertyMap> properties) {
    return create(Js.uncheckedCast(proto), properties);
  }

  @JsOverlay
  public static final JsObject create(Object proto) {
    return create(Js.uncheckedCast(proto));
  }

  public static native  T defineProperties(
      T obj, JsPropertyMap> props);

  public static native  T defineProperty(
      T obj, JsObject.DefinePropertyPropUnionType prop, ObjectPropertyDescriptor descriptor);

  @JsOverlay
  public static final  T defineProperty(
      T obj, Object prop, ObjectPropertyDescriptor descriptor) {
    return defineProperty(
        obj, Js.uncheckedCast(prop), descriptor);
  }

  @JsOverlay
  public static final  T defineProperty(
      T obj, String prop, ObjectPropertyDescriptor descriptor) {
    return defineProperty(
        obj, Js.uncheckedCast(prop), descriptor);
  }

  public static native  JsArray>> entries(
      JsPropertyMap obj);

  public static native  T freeze(T obj);

  public static native JsObject fromEntries(JsIterable