[Tests] run nyc on all tests

.eslintignore

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

.gitignore

@@ -18,3 +18,6 @@ node_modules
 npm-shrinkwrap.json
 package-lock.json
 yarn.lock
+
+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

@@ -28,8 +28,8 @@
 		"@ljharb/eslint-config": "^17.2.0",
 		"aud": "^1.1.2",
 		"auto-changelog": "^2.2.0",
-		"covert": "^1.1.1",
 		"eslint": "^7.7.0",
+		"nyc": "^10.3.2",
 		"safe-publish-latest": "^1.1.4",
 		"tape": "^5.0.1"
 	},
@@ -43,11 +43,9 @@
 	"scripts": {
 		"prepublish": "safe-publish-latest",
 		"pretest": "npm run lint",
-		"tests-only": "node test",
-		"test": "npm run tests-only && npm run coverage -- --quiet",
+		"tests-only": "nyc tape 'test/**/*.js'",
+		"test": "npm run tests-only",
 		"posttest": "npx aud --production",
-		"coverage": "covert test/index.js",
-		"lint": "eslint .",
 		"version": "auto-changelog && git add CHANGELOG.md",
 		"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""
 	},