[Tests] run nyc on all tests

.eslintignore

@@ -0,0 +1 @@
+coverage/

.gitignore

@@ -5,3 +5,7 @@
 # Only apps should have lockfiles
 yarn.lock
 package-lock.json
+
+# coverage data
+coverage/
+.nyc_output/

.nycrc

@@ -0,0 +1,13 @@
+{
+	"all": true,
+	"check-coverage": false,
+	"reporter": ["text-summary", "text", "html", "json"],
+	"lines": 86,
+	"statements": 85.93,
+	"functions": 82.43,
+	"branches": 76.06,
+	"exclude": [
+		"coverage",
+		"test"
+	]
+}

package.json

@@ -55,7 +55,7 @@
         "lint": "eslint . bin/*",
         "pretest": "npm run lint",
         "test": "npm run tests-only",
-        "tests-only": "tap test/*.js"
+        "tests-only": "nyc tap test/*.js"
     },
     "testling": {
         "files": "test/browser/*.js",