Use pure ESM as default

package.json

@@ -5,6 +5,7 @@
   "license": "MIT",
   "author": "Ivan Nikolić <niksy5@gmail.com> (http://ivannikolic.com)",
   "sideEffects": false,
+  "type": "module",
   "exports": {
     ".": {
       "import": "./esm/index.js",
@@ -30,12 +31,12 @@
     "README.md"
   ],
   "scripts": {
-    "generate-list": "node -r esm generate-list.js",
+    "generate-list": "node generate-list.js",
     "release": "np --no-release-draft",
     "version": "if [ $(git rev-parse --abbrev-ref HEAD) == 'master' ]; then sed -i '' '/\\[unreleased\\]:/d' CHANGELOG.md && version-changelog CHANGELOG.md && changelog-verify CHANGELOG.md && git add CHANGELOG.md; else echo; fi",
     "postpublish": "GITHUB_TOKEN=$GITHUB_RELEASE_TOKEN github-release-from-changelog",
     "lint": "eslint '{index,lib/**/*,test/**/*,generate-list}.js'",
-    "test": "mocha --require esm 'test/**/*.js'",
+    "test": "mocha 'test/**/*.js'",
     "test:watch": "npm test -- --watch",
     "build": "rollup --config rollup.config.js",
     "module-check": "node -e 'require(\"css-functions-list\");' && node --input-type=module -e 'import \"css-functions-list\";'",
@@ -54,14 +55,13 @@
     "eslint-config-nitpick": "^11.1.0",
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-prettier": "^4.0.0",
-    "esm": "^3.0.51",
     "execa": "^5.1.1",
     "github-release-from-changelog": "^2.1.1",
     "husky": "^4.3.0",
     "isomorphic-unfetch": "^3.1.0",
     "jsdom": "^17.0.0",
     "lint-staged": "^10.4.2",
-    "mocha": "^9.1.3",
+    "mocha": "^10.2.0",
     "np": "^7.6.0",
     "prettier": "^2.4.0",
     "rollup": "^2.32.1",