refactor(set generic to "Function" in Reflect.getMetadata<T>):

elderapo · Feb 11, 2019 · b931103 · b931103
1 parent 22cda94
commit b931103
Showing 1 changed file with 6 additions and 5 deletions.
diff --git a/src/ProtobufLiteMetadata.ts b/src/ProtobufLiteMetadata.ts
@@ -73,11 +73,7 @@ export class ProtobufLiteMetadata {
       ? Object.assign({}, defaultProtobufLitePropertyOptions, decoratorOptions)
       : defaultProtobufLitePropertyOptions;
 
-    let type: Function = Reflect.getMetadata(
-      "design:type",
-      targetProperty,
-      propertyKey
-    ) as Function;
+    let type = Reflect.getMetadata<Function>("design:type", targetProperty, propertyKey);
     let typeFromDecoratorOptions =
       decoratorOptions && decoratorOptions.type ? decoratorOptions.type() : null;
 
@@ -115,6 +111,11 @@ export class ProtobufLiteMetadata {
       }
     }
 
+    /* istanbul ignore next line */
+    if (typeof type === "undefined") {
+      throw new Error(`"type" cannot be undefined!`);
+    }
+
     let isCodecUsed: boolean = false;
 
     const CodecConstructable = decoratorOptions.codec || InternalCodecs.lookup(type);