diff --git a/package.json b/package.json
index 4a7de6d..b520231 100644
--- a/package.json
+++ b/package.json
@@ -9,8 +9,11 @@
   "scripts": {
     "prebuild": "rm -rf dist",
     "build": "babel -d dist src",
+    "prebuild:map": "npm run prebuild",
+    "build:map": "babel --source-maps=true -d dist src",
+    "pretest": "npm run build:map",
+    "test": "nyc ava test",
     "lint": "eslint src",
-    "test": "ava test",
     "prepublish": "npm run build"
   },
   "babel": {
@@ -51,7 +54,8 @@
     "babel-plugin-add-module-exports": "^0.2.1",
     "babel-preset-es2015": "^6.9.0",
     "eslint": "^2.11.1",
-    "eslint-config-lukechilds": "^1.5.1"
+    "eslint-config-lukechilds": "^1.5.1",
+    "nyc": "^6.4.4"
   },
   "dependencies": {
     "commander": "^2.9.0",