[Tests] run nyc on all tests; use tape runner

.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

.nycrc

@@ -0,0 +1,9 @@
+{
+	"all": true,
+	"check-coverage": false,
+	"reporter": ["text-summary", "text", "html", "json"],
+	"exclude": [
+		"coverage",
+		"test"
+	]
+}

package.json

@@ -22,15 +22,10 @@
 	"scripts": {
 		"prepublishOnly": "safe-publish-latest",
 		"prepublish": "not-in-publish || npm run prepublishOnly",
-		"pretest": "npm run --silent lint && npm run --silent coverage",
-		"test": "npm run --silent tests-only",
+		"pretest": "npm run lint",
+		"test": "npm run tests-only",
 		"posttest": "aud --production",
-		"tests-only": "node --es-staging test",
-		"coverage": "npm run --silent cover:clean && npm run --silent cover:istanbul && npm run --silent cover:check",
-		"cover:clean": "rimraf coverage",
-		"cover:istanbul": "istanbul cover test --report html",
-		"cover:check": "istanbul check",
-		"cover:covert": "covert test",
+		"tests-only": "nyc tape 'test/**/*.js'",
 		"lint": "eslint ."
 	},
 	"repository": {
@@ -51,9 +46,8 @@
 	"devDependencies": {
 		"@ljharb/eslint-config": "^17.2.0",
 		"aud": "^1.1.2",
-		"covert": "^1.1.1",
 		"eslint": "^7.11.0",
-		"istanbul": "^1.0.0-alpha.2",
+		"nyc": "^10.3.2",
 		"rimraf": "^2.7.1",
 		"safe-publish-latest": "^1.1.4",
 		"tape": "^5.0.1"