Fix/strict typeing all classes (#409)

* Webpack config adjusted
* NPM packages checked
* js folder should contain only files if build

Author: lloc

.gitignore

@@ -1,18 +1,19 @@
 .DS_Store
 .idea/
-.phpunit.result.cache
 .phpunit.cache
+.phpunit.result.cache
 composer.lock
 composer.phar
-multisite-language-switcher/
+js/msls-widget-block/
+js/msls.js
 multisite-language-switcher.zip
+multisite-language-switcher/
+node_modules/
+out/
 package-lock.json
 phpunit.xml.bak
 tests/coverage/
-tests/playwright-results/
 tests/playwright-report/
+tests/playwright-results/
 tests/playwright/.env.local
-node_modules/
-out/
 vendor/
-

js/msls-widget-block/index.asset.php

@@ -2,7 +2,7 @@
   "scripts": {
     "uglify": "uglifyjs src/msls.js > js/msls.js",
     "less": "lessc css/msls.less css/msls.css --clean-css=\"--s1 --advanced\"",
-    "build-msls-block": "wp-scripts build src/msls-widget-block/index.js --output-path=js/msls-widget-block",
+    "build-msls-block": "wp-scripts build --webpack-src-dir=src/msls-widget-block --output-path=js/msls-widget-block",
     "build": "npm run uglify && npm run less && npm run build-msls-block"
   },
   "dependencies": {