Merge pull request #13 from yufeng04/fix-inject

fix: 修改 inject 参数类型

src/decorators/inject.ts

@@ -5,7 +5,7 @@ import { setNthDependency } from '../di/dependency';
  * 声明参数的 token
  */
 export function inject (token: InjectToken) {
-    return function inject (target: Object, propertyKey: string | symbol, parameterIndex: number) {
+    return function inject (target: Object, propertyKey: string | symbol | undefined, parameterIndex: number) {
         if (propertyKey === undefined) {
             setNthDependency(token, parameterIndex, target);
         }