style: 完善类型注释

Author: lmk123

src/index.ts

@@ -1,13 +1,25 @@
-export interface FnObj {
-  [prop: string]: (...args: any[]) => any
+interface A {
+  [prop: string]: any
 }
 
-export default function<T extends FnObj>(
+function chromeCall<T extends A>(
+  object: T,
+  methodName: keyof T,
+  args: any | any[],
+  returnArray: true
+): Promise<any[]>
+function chromeCall<T extends A>(
+  object: T,
+  methodName: keyof T,
+  args: any | any[],
+  returnArray?: boolean
+): Promise<any>
+function chromeCall<T extends A>(
   object: T,
   methodName: keyof T,
   args: any | any[] = [],
   returnArray?: boolean
-): Promise<any> {
+) {
   return new Promise((resolve, reject) => {
     if (!Array.isArray(args)) {
       args = [args]
@@ -25,6 +37,8 @@ export default function<T extends FnObj>(
         resolve(results[0])
       }
     })
-    object[methodName].apply(object, args)
+    ;(object[methodName] as Function).apply(object, args)
   })
 }
+
+export default chromeCall

test/index.spec.ts

@@ -1,4 +1,4 @@
-import chromeCall, { FnObj } from '../src/index'
+import chromeCall from '../src/index'
 import { polyfill } from 'es6-promise'
 
 polyfill()
@@ -8,7 +8,7 @@ window.chrome = {
   runtime: {}
 }
 
-interface FakeObj extends FnObj {
+interface FakeObj {
   method: (key: string, cb: (...args: any[]) => any) => void
 }
 
@@ -30,7 +30,7 @@ describe('chromeCall', () => {
 
   it('若正常执行则 resolve promise', done => {
     chromeCall(fakeObj, 'method', ['a']).then(
-      (value: any) => {
+      value => {
         expect(value).toBe('a')
         done()
       },
@@ -57,7 +57,7 @@ describe('chromeCall', () => {
 
   it('最后一个参数是 true，则返回一个数组', done => {
     chromeCall(fakeObj, 'method', ['a'], true).then(
-      (value: any) => {
+      value => {
         expect(Array.isArray(value)).toBe(true)
         expect(value).toEqual(['a', 'b'])
         done()