Enable compilerOptions noImplicitReturns and noUnusedParameters to im…

…prove type safety. (#347)

lib/bundle.ts

@@ -290,6 +290,7 @@ function findInInventory(inventory: InventoryEntry[], $refParent: any, $refKey:
       return existingEntry;
     }
   }
+  return undefined
 }
 
 function removeFromInventory(inventory: InventoryEntry[], entry: any) {

lib/pointer.ts

@@ -284,6 +284,7 @@ function resolveIf$Ref(pointer: any, options: any, pathFromRoot?: any) {
       return true;
     }
   }
+  return undefined
 }
 export default Pointer;
 

lib/ref.ts

@@ -195,6 +195,7 @@ class $Ref<S extends object = JSONSchema, O extends ParserOptions<S> = ParserOpt
         return true;
       }
     }
+    return undefined
   }
 
   /**

lib/util/plugins.ts

@@ -45,6 +45,7 @@ export function sort(plugins: Plugin[]) {
   });
 }
 
+// @ts-ignore
 export interface PluginResult<S extends object = JSONSchema, O extends ParserOptions<S> = ParserOptions<S>> {
   plugin: Plugin;
   result?: string | Buffer | S;

lib/util/url.ts

@@ -68,6 +68,7 @@ export function getProtocol(path: string | undefined) {
   if (match) {
     return match[1].toLowerCase();
   }
+  return undefined;
 }
 
 /**

tsconfig.json

@@ -17,7 +17,9 @@
     "resolveJsonModule": true,
     "rootDir": ".",
     "skipLibCheck": true,
-    "strict": true
+    "strict": true,
+    "noImplicitReturns": true,
+    "noUnusedParameters": true
   },
   "compileOnSave": false,
   "exclude": ["node_modules", "dist"],