[Tests] run nyc on all tests

Author: ljharb

Diff for: .eslintignore

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

Diff for: .gitignore

@@ -12,6 +12,7 @@ lib-cov
 
 # Coverage directory used by tools like istanbul
 coverage
+.nyc_output/
 
 # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
 .grunt

Diff for: .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"
+	]
+}

Diff for: package.json

@@ -12,9 +12,8 @@
 		"prepublish": "safe-publish-latest",
 		"pretest": "npm run lint",
 		"test": "npm run tests-only",
-		"tests-only": "node --harmony --es-staging test",
+		"tests-only": "nyc tape 'test/**/*.js'",
 		"posttest": "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)\")\""
@@ -35,11 +34,11 @@
 		"@ljharb/eslint-config": "^17.2.0",
 		"aud": "^1.1.2",
 		"auto-changelog": "^2.2.0",
-		"covert": "^1.1.1",
 		"eslint": "^7.9.0",
 		"foreach": "^2.0.5",
 		"indexof": "^0.0.1",
 		"is": "^3.3.0",
+		"nyc": "^10.3.2",
 		"safe-publish-latest": "^1.1.4",
 		"tape": "^5.0.1"
 	},