Refactor project to use ES modules and update related scripts

Author: elikoga

eslint.config.mjs

@@ -62,7 +62,7 @@ export default [
         }
     },
     {
-        files: ["po/po2js", "po/xgettext-html"],
+        files: ["po/po2js.cjs", "po/xgettext-html.cjs"],
         languageOptions: {
             globals: {
                 ...globals.node,

karma.conf.js renamed to karma.conf.cjs

@@ -3,6 +3,7 @@
   "version": "1.6.0",
   "description": "An HTML5 VNC client",
   "browser": "lib/rfb",
+  "type": "module",
   "directories": {
     "lib": "lib",
     "doc": "docs",
@@ -17,9 +18,9 @@
     "docs/LICENSE*"
   ],
   "scripts": {
-    "lint": "eslint app core po/po2js po/xgettext-html tests utils",
-    "test": "karma start karma.conf.js",
-    "prepublish": "node ./utils/convert.js --clean"
+    "lint": "eslint app core po/po2js.cjs po/xgettext-html.cjs tests utils",
+    "test": "karma start karma.conf.cjs",
+    "prepare": "node ./utils/convert.cjs --clean"
   },
   "repository": {
     "type": "git",

package.json

@@ -15,7 +15,7 @@ update-js: $(JSONFILES)
 %.po: FORCE
 	msgmerge --update --lang=$* $@ noVNC.pot
 ../app/locale/%.json: FORCE
-	./po2js $*.po $@
+	./po2js.cjs $*.po $@
 
 update-pot:
 	xgettext --output=noVNC.js.pot \
@@ -29,7 +29,7 @@ update-pot:
 		../app/*.js \
 		../core/*.js \
 		../core/input/*.js
-	./xgettext-html --output=noVNC.html.pot \
+	./xgettext-html.cjs --output=noVNC.html.pot \
 		../vnc.html
 	msgcat --output-file=noVNC.pot \
 		--sort-by-file noVNC.js.pot noVNC.html.pot

po/Makefile

@@ -64,7 +64,7 @@ function makeLibFiles(sourceMaps) {
         plugins: [],
         presets: [
             [ '@babel/preset-env',
-              { modules: 'commonjs' } ]
+              { modules: false } ]
         ],
         ast: false,
         sourceMaps: sourceMaps,