diff --git a/src/tsconfig.spec.json b/src/tsconfig.spec.json
index 26a878ced..3d73f831c 100644
--- a/src/tsconfig.spec.json
+++ b/src/tsconfig.spec.json
@@ -1,10 +1,13 @@
 {
-    "extends": "./tsconfig.json",
+    "extends": "../tsconfig.base.json",
     "compilerOptions": {
-        "outDir": "../../dist/out-tsc",
-        "module": "commonjs",
-        "types": ["jest", "node"]
+        "outDir": "../out-tsc/spec",
+        "baseUrl": "./",
+        "types": ["jest", "node"],
+        "experimentalDecorators": true,
+        "emitDecoratorMetadata": true,
+        "resolveJsonModule": true
     },
-    "files": ["src/test-setup.ts"],
+    "files": ["src/polyfills.ts"],
     "include": ["**/*.spec.ts", "**/*.d.ts"]
 }
diff --git a/tsconfig.base.json b/tsconfig.base.json
index f63736382..67deca65d 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -17,7 +17,8 @@
       "es2016",
       "es2015",
       "dom"
-    ]
+    ],
+    "resolveJsonModule": true
   },
   "files": [
     "src/main.ts",
diff --git a/tsconfig.spec.json b/tsconfig.spec.json
index a3431289d..363afa9a7 100644
--- a/tsconfig.spec.json
+++ b/tsconfig.spec.json
@@ -5,7 +5,8 @@
         "baseUrl": "./",
         "types": ["jest", "node"],
         "experimentalDecorators": true,
-        "emitDecoratorMetadata": true
+        "emitDecoratorMetadata": true,
+        "resolveJsonModule": true
     },
     "files": ["src/polyfills.ts"],
     "include": ["**/*.spec.ts", "**/*.d.ts"]