[Tests] add nyc coverage

Author: ljharb

.github/workflows/nodejs.yml

@@ -57,9 +57,9 @@ jobs:
         NPM_CONFIG_STRICT_SSL: false
       if: matrix.os == 'windows-latest'
 
-    - run: npm run tests-only
+    - run: ./node_modules/.bin/tape 'test/**/*.js'
     - uses: codecov/codecov-action@v3
-  
+
   nonlatest:
     needs: [matrix, latest]
     name: 'non-latest majors'
@@ -97,12 +97,12 @@ jobs:
         NPM_CONFIG_STRICT_SSL: false
       if: matrix.os == 'windows-latest'
 
-    - run: npm run tests-only
+    - run: ./node_modules/.bin/tape 'test/**/*.js'
     - uses: codecov/codecov-action@v3
 
   node:
     name: 'node majors, windows/mac'
     needs: [latest, nonlatest]
     runs-on: ubuntu-latest
     steps:
-      - run: 'echo tests completed'
+      - run: 'echo tests completed'

.gitignore

@@ -2,6 +2,9 @@
 
 node_modules
 
+coverage/
+.nyc_output/
+
 # Only apps should have lockfiles
 npm-shrinkwrap.json
 package-lock.json

.nycrc

@@ -0,0 +1,14 @@
+{
+	"all": true,
+	"check-coverage": false,
+	"reporter": ["text-summary", "text", "html", "json"],
+	"lines": 86,
+	"statements": 85.93,
+	"functions": 82.43,
+	"branches": 76.06,
+	"exclude": [
+		"coverage",
+		"example",
+		"test"
+	]
+}

package.json

@@ -19,6 +19,7 @@
 		"evalmd": "^0.0.19",
 		"in-publish": "^2.0.1",
 		"npmignore": "^0.3.0",
+		"nyc": "^10.3.2",
 		"safe-publish-latest": "^2.0.0",
 		"tape": "^5.6.3"
 	},
@@ -42,7 +43,7 @@
 		"prelint": "evalmd README.md",
 		"lint": "eslint --ext=js,mjs .",
 		"pretest": "npm run lint",
-		"tests-only": "tape 'test/**/*.js'",
+		"tests-only": "nyc tape 'test/**/*.js'",
 		"test": "npm run tests-only",
 		"posttest": "aud --production",
 		"version": "auto-changelog && git add CHANGELOG.md",