moved metadata read from decorator into container class

Author: Umed Khudoiberdiev

package.json

@@ -1,6 +1,6 @@
 {
   "name": "typedi",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "Dependency injection for TypeScript",
   "license": "MIT",
   "readmeFilename": "README.md",

src/Container.ts

@@ -90,7 +90,8 @@ export class Container {
         }
 
         // setup constructor parameters for a newly initialized service
-        let params: any[] = service.paramTypes ? this.initializeParams(type, service.paramTypes) : [];
+        const paramTypes = Reflect && (Reflect as any).getMetadata ? (Reflect as any).getMetadata("design:paramtypes", type) : undefined;
+        let params: any[] = paramTypes ? this.initializeParams(type, paramTypes) : [];
 
         // if factory is set then use it to create service instance
         if (service.factory) {

src/decorators/Service.ts

@@ -30,8 +30,7 @@ export function Service<T, K extends keyof T>(optionsOrServiceName?: ServiceOpti
     return function(target: Function) {
 
         const service: ServiceMetadata<T, K> = {
-            type: target,
-            paramTypes: (Reflect as any).getMetadata("design:paramtypes", target)
+            type: target
         };
 
         if (typeof optionsOrServiceName === "string" || optionsOrServiceName instanceof Token) {

src/types/ServiceMetadata.ts

@@ -25,11 +25,6 @@ export interface ServiceMetadata<T, K extends keyof T> {
      */
     factory?: [ObjectType<T>, K]|((...params: any[]) => any);
 
-    /**
-     * Parameter types passed used to determine class dependencies of the service.
-     */
-    paramTypes?: any[];
-
     /**
      * Instance of the target class.
      */