TypeScript WeakMap.set函数代码示例

		beforeProperties(function(this: WidgetBase & { own: Function }, properties: any) {
			const injectorItem = this.registry.getInjector<Store<S>>(name);
			if (injectorItem) {
				const { injector } = injectorItem;
				const store = injector();
				const registeredInjectors = registeredInjectorsMap.get(this) || [];
				if (registeredInjectors.length === 0) {
					registeredInjectorsMap.set(this, registeredInjectors);
				}
				if (registeredInjectors.indexOf(injectorItem) === -1) {
					if (paths) {
						const handle = store.onChange(paths.map((path: any) => store.path(path.join('/'))), () =>
							this.invalidate()
						);
						this.own({
							destroy: () => {
								handle.remove();
							}
						});
					} else {
						this.own(
							store.on('invalidate', () => {
								this.invalidate();
							})
						);
					}
					registeredInjectors.push(injectorItem);
				}
				return getProperties(store, properties);
			}
		})(target);

		const append = (route: Route<Context, Parameters>) => {
			if (hasBeenAppended(route)) {
				throw new Error('Cannot append route that has already been appended');
			}

			this._routes.push(route);
			parentMap.set(route, this);
		};

	constructor(source?: Iterable<T> | ArrayLike<T>) {
		listItems.set(this, []);

		if (source) {
			forOf(source, (item: T) => {
				this.add(item);
			});
		}
	}

	constructor(source?: Iterable<T> | ArrayLike<T>) {
		listItems.set(this, []);

		if (source) {
			if (isArrayLike(source)) {
				for (let i = 0; i < source.length; i++) {
					this.add(source[i]);
				}
			} else if (isIterable(source)) {
				for (const item of source) {
					this.add(item);
				}
			}
		}
	}

			}
		},
		configure(this: AnyAction, configuration: Object): Promise<void> | void {
			const configureFn = configureFunctions.get(this);
			if (configureFn) {
				return configureFn.call(this, configuration);
			}
		}
	})
	.mixin({
		mixin: createStateful,
		initialize(instance: AnyAction, { do: doFn, enabled = true, configure }: ActionOptions<any, ActionState>) {
			if (!doFn) {
				throw new TypeError(`'options.do' required during creation.`);
			}
			doFunctions.set(instance, doFn);
			instance.setState({ enabled });
			if (configure) {
				configureFunctions.set(instance, configure);
			}
			instance.own({
				destroy() {
					doFunctions.delete(instance);
					configureFunctions.delete(instance);
				}
			});
		}
	});

export default createAction;

	clear(): void {
		listItems.set(this, []);
	}

	constructor() {
		privateStateMap.set(this, {
			entryMap: new Map<Identity, Entry<V>>(),
			idMap: new WeakMap<V, Identity>()
		});
	}

	.init((instance) => {
		handlesWeakMap.set(instance, []);
	});

	.init((instance: Stateful<State>) => {
		instanceStateMap.set(instance, Object.create(null));
	});

/**
 * State change event type
 */
const stateChangedEventType = 'state:changed';

/**
 * Create an instance of a stateful object
 */
const statefulMixin: StatefulMixin = eventedMixin
	.extend('Stateful', {
		get state(this: Stateful<State>) {
			return instanceStateMap.get(this);
		},
		setState<S extends State>(this: Stateful<S>, value: Partial<S>) {
			const oldState = instanceStateMap.get(this);
			const state = deepAssign({}, oldState, value);
			const eventObject = {
				type: stateChangedEventType,
				state,
				target: this
			};
			instanceStateMap.set(this, state);
			this.emit(eventObject);
		}
	})
	.init((instance: Stateful<State>) => {
		instanceStateMap.set(instance, Object.create(null));
	});
export default statefulMixin;