feat: First iteration, multi themes, I18N

tests/helpers.js

@@ -0,0 +1,23 @@
+import { readFileSync } from 'node:fs';
+import { fileURLToPath } from 'node:url';
+import { buildContext } from '../public/js/engine/context.js';
+
+export const PUBLIC_DIR = fileURLToPath(new URL('../public/', import.meta.url));
+
+export const readJson = (relativePath) => JSON.parse(readFileSync(PUBLIC_DIR + relativePath, 'utf8'));
+
+export function loadContext() {
+  return buildContext({
+    rules: readJson('data/rules.json'),
+    generators: readJson('data/generators.json'),
+    upgrades: readJson('data/upgrades.json'),
+  });
+}
+
+/** Flatten nested locale JSON to dotted keys, like services/i18n.js does. */
+export function flatKeys(object, prefix = '') {
+  return Object.entries(object).flatMap(([key, value]) => {
+    const path = prefix ? `${prefix}.${key}` : key;
+    return value && typeof value === 'object' ? flatKeys(value, path) : [path];
+  });
+}