add compare file script

Author: germain-gg

package.json

@@ -1,14 +1,15 @@
 {
     "name": "matrix-web-i18n",
-    "version": "1.0.1",
+    "version": "1.1.0",
     "description": "Internationalisation utils for Matrix web projects",
     "keywords": [
         "i18n"
     ],
     "license": "Apache-2.0",
     "bin": {
-        "gen-18n": "scripts/gen-i18n.js",
-        "prune-18n": "scripts/prune-i18n.js"
+        "gen-i18n": "scripts/gen-i18n.js",
+        "prune-i18n": "scripts/prune-i18n.js",
+        "compare-i18n-files": "scripts/compare-file.js"
     },
     "repository": {
         "type": "git",

scripts/compare-file.js

@@ -0,0 +1,10 @@
+const fs = require("fs");
+
+if (process.argv.length < 4) throw new Error("Missing source and target file arguments");
+
+const sourceFile = fs.readFileSync(process.argv[2], 'utf8');
+const targetFile = fs.readFileSync(process.argv[3], 'utf8');
+
+if (sourceFile !== targetFile) {
+    throw new Error("Files do not match");
+}