STRWEB-118 report test coverage

Report test coverage to `artifacts/coverage`.

Refs STRWEB-118

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 * Don't worry about the order of CSS imports across modules. Refs STRWEB-110.
 * Remove postcss-plugins: postcss-nesting, postcss-custom-properties, postcss-color-function, postcss-calc. Add CSS variables entry point in webpack config. Refs STRWEB-111.
+* Report test coverage. Refs STRWEB-118.
 
 ## [5.1.0](https://github.com/folio-org/stripes-webpack/tree/v5.1.0) (2024-03-12)
 [Full Changelog](https://github.com/folio-org/stripes-webpack/compare/v5.0.0...v5.1.0)

package.json

@@ -7,7 +7,7 @@
     "registry": "https://repository.folio.org/repository/npm-folio/"
   },
   "scripts": {
-    "test": "mocha --opts ./test/mocha.opts './test/webpack/**/*.js'"
+    "test": "nyc --reporter=html --report-dir=artifacts/coverage --all mocha --opts ./test/mocha.opts './test/webpack/**/*.js'"
   },
   "engines": {
     "node": ">=12.0.0"
@@ -80,6 +80,7 @@
     "chai": "^4.1.2",
     "mocha": "^6.1.3",
     "mocha-junit-reporter": "^1.17.0",
+    "nyc": "^17.1.0",
     "sinon": "^7.3.2",
     "sinon-chai": "^3.3.0",
     "webpack": "^5.58.1"