fix(web): translations (#10021)

web/src/lib/i18n.spec.ts

@@ -0,0 +1,36 @@
+import messages from '$lib/i18n/en.json';
+import { exec as execCallback } from 'node:child_process';
+import { promisify } from 'node:util';
+import { init } from 'svelte-i18n';
+
+type Messages = { [key: string]: string | Messages };
+
+const exec = promisify(execCallback);
+
+function setEmptyMessages(messages: Messages) {
+  const copy = { ...messages };
+
+  for (const key in copy) {
+    const message = copy[key];
+    if (typeof message === 'string') {
+      copy[key] = '';
+    } else if (typeof message === 'object') {
+      setEmptyMessages(message);
+    }
+  }
+
+  return copy;
+}
+
+describe('i18n', () => {
+  beforeEach(() => init({ fallbackLocale: 'dev' }));
+
+  test('no missing messages', async () => {
+    const { stdout } = await exec('npx svelte-i18n extract -c svelte.config.js "src/**/*"');
+    const extractedMessages: Messages = JSON.parse(stdout);
+    const existingMessages = setEmptyMessages(messages);
+
+    // Only translations directly using the store seem to get extracted
+    expect({ ...extractedMessages, ...existingMessages }).toEqual(existingMessages);
+  });
+});