feat(Disposer): 支持匿名项目

src/Disposer.ts

@@ -1,38 +1,54 @@
-export type DisposerItemName = string | number
+/* eslint-disable lines-between-class-members */
+/* eslint-disable no-dupe-class-members */
+import randomString from './randomString'
 
 export type Dispose = () => void
 
+const anonymousKey: string = `__anonymous_${randomString()}__`
+
 /**
  * 处置器。
  */
-export default class Disposer {
+export default class Disposer<N extends string | number = string | number> {
   /**
    * 待处置项目存放容器。
    *
    * @private
    */
-  private jar: { [name: string]: Dispose[] } = Object.create(null)
+  private jar: { [name in N]: Dispose[] } = Object.create(null)
 
   /**
    * 将待处置项目加入容器。
    *
    * @param name 待处置项目名称
    * @param dispose 处置行为
    */
-  public add(name: DisposerItemName, dispose: Dispose | Dispose[]): void {
+  public add(name: N, dispose: Dispose | Dispose[]): void
+  /**
+   * 将匿名待处置项目加入容器。
+   *
+   * @param dispose 处置行为
+   */
+  public add(dispose: Dispose | Dispose[]): void
+  public add(name: any, dispose?: any): void {
+    if (dispose == null) {
+      dispose = name
+      name = anonymousKey
+    }
     dispose = Array.isArray(dispose) ? dispose : [dispose]
-    this.jar[name] = [
-      ...(this.jar[name] || []),
+    ;(this.jar as any)[name] = [
+      ...((this.jar as any)[name] || []),
       ...dispose,
     ]
   }
 
   /**
    * 处置项目。
    *
-   * @param name 欲处置项目名称
+   * @param [name] 欲处置项目名称，不设置表示匿名项目
    */
-  public dispose(name: DisposerItemName): void {
+  public dispose(name?: N): void {
+    name = name != null ? name : anonymousKey as any
     (this.jar[name] || /* istanbul ignore next */ []).forEach(dispose => dispose())
     delete this.jar[name]
   }

test/index.test.ts

@@ -186,6 +186,18 @@ describe('Disposer', () => {
     expect(dispose3.calledOnce).toBeTruthy()
     expect((disposer as any).jar).toEqual({})
   })
+  test('匿名项目', () => {
+    const dispose1 = sinon.fake()
+    const dispose2 = sinon.fake()
+    const dispose3 = sinon.fake()
+    disposer.add(dispose1)
+    disposer.add([dispose2, dispose3])
+    disposer.dispose()
+    expect(dispose1.calledOnce).toBeTruthy()
+    expect(dispose2.calledOnce).toBeTruthy()
+    expect(dispose3.calledOnce).toBeTruthy()
+    expect((disposer as any).jar).toEqual({})
+  })
 })
 
 describe('inBrowser', () => {