revert postbuild.mjs file-extension change

src/postbuild.mjs

@@ -0,0 +1,43 @@
+import fs from 'fs-extra';
+import path from 'path';
+import xliffToJSON from 'xliff-to-json';
+
+async function recFindByExt(base,ext,files,result)
+{
+    files = files || (await fs.readdir(base))
+    result = result || []
+
+    for (const file of files) {
+        var newbase = path.join(base,file)
+        if ( (await fs.stat(newbase)).isDirectory() )
+        {
+            result = await recFindByExt(newbase,ext,await fs.readdir(newbase),result)
+        }
+        else
+        {
+            if ( file.substr(-1*(ext.length+1)) == '.' + ext )
+            {
+                result.push(newbase)
+            }
+        }
+    }
+    return result
+}
+
+// outputs array of supported locales
+async function createLocalizationJSON() {
+    xliffToJSON.convert('src/assets/i18n');
+    const files = await recFindByExt(path.join('src', 'assets', 'i18n'), 'json');
+    const locales = [];
+
+    for (let i = 0; i < files.length; i++) {
+        const file = path.basename(files[i]);
+        const file_parts = file.split('.');
+        locales.push(file_parts[1]);
+    }
+
+    fs.unlinkSync('src/assets/i18n/messages.en.json');
+    fs.writeJSONSync('src/assets/i18n/supported_locales.json', {supported_locales: locales});
+}
+
+createLocalizationJSON();