feat: build translation file

Author: feildmaster

package-lock.json

@@ -25,6 +25,7 @@
     "test": "mocha",
     "update": "npm version minor --m=\"chore(update): Release v%s\"",
     "version": "node scripts/validate.cjs",
+    "bundle": "node scripts/lang.js",
     "types": "tsc",
     "//": "versioning scripts",
     "patch": "npm version patch --m=\"chore(patch): Release v%s\"",
@@ -52,6 +53,7 @@
     "eslint": "^8.31.0",
     "eslint-config-airbnb-base": "^15.0.0",
     "eslint-plugin-import": "^2.26.0",
+    "fast-glob": "^3.3.3",
     "mocha": "^10.2.0",
     "replace": "^1.2.1",
     "rollup": "^2.79.2",

package.json

@@ -0,0 +1,84 @@
+import fs from 'node:fs/promises';
+import glob from 'fast-glob';
+
+async function main() {
+  // Load base "en" first
+  const data = await bundle(
+    await glob('lang/en/*.json'),
+  );
+
+  // Now load other languages (if any)
+  Object.entries(await bundle(
+    await glob([
+      'lang/*/*.json',
+      '!lang/en',
+    ]),
+  )).forEach(
+    ([lang, obj]) => Object.entries(obj).forEach(
+      ([key, value]) => {
+        // Check if key exists in "en"
+        if (!Object.hasOwn(data.en, key)) {
+          console.warn(`${lang} has extra key "${key}"`);
+          // assign(data, lang, `???${key}`, value);
+          // return;
+        }
+        assign(data, lang, key, value);
+      },
+    ),
+  );
+
+  const file = JSON.stringify(sort(data), null, 2);
+  if (!file) return;
+  await fs.writeFile('lang/underscript.json', file);
+}
+
+function assign(obj = {}, lang = '', key = '', value = '') {
+  // Only add key if value exists
+  if (!value) return;
+  obj[lang] ??= {}; // Does lang exist?
+  obj[lang][key] = value;
+}
+
+/**
+ * Bundle all files into a single object
+ * @returns {Promise<Record<string, Record<string, string>>>}
+ */
+async function bundle(files = []) {
+  const ret = {};
+  await Promise.all(files.map(async (file) => {
+    const [lang, name] = getFileParts(file);
+
+    Object.entries(await parse(file)).forEach(
+      ([key, value]) => {
+        assign(ret, lang, `underscript.${name}.${key}`, value);
+      },
+    );
+  }));
+  return ret;
+}
+
+// Split file path into [lang, name]
+function getFileParts(file = '') {
+  const [/* dir */, lang, name] = file.split('/');
+  return [lang, name.substring(0, name.lastIndexOf('.'))];
+}
+
+async function parse(file) {
+  const content = await fs.readFile(file);
+  return JSON.parse(content);
+}
+
+function sort(obj = {}) {
+  const keys = Object.keys(obj);
+  if (!keys.length) return undefined;
+  const sorted = {};
+  keys.sort().forEach(
+    (key) => {
+      const value = obj[key];
+      sorted[key] = typeof value === 'object' ? sort(value) : value;
+    },
+  );
+  return sorted;
+}
+
+main();