chore: refactoring and tests, splitting up files (#12495)

packages/app/src/i18n/parity.test.ts

@@ -0,0 +1,31 @@
+import { describe, expect, test } from "bun:test"
+import { dict as en } from "./en"
+import { dict as ar } from "./ar"
+import { dict as br } from "./br"
+import { dict as bs } from "./bs"
+import { dict as da } from "./da"
+import { dict as de } from "./de"
+import { dict as es } from "./es"
+import { dict as fr } from "./fr"
+import { dict as ja } from "./ja"
+import { dict as ko } from "./ko"
+import { dict as no } from "./no"
+import { dict as pl } from "./pl"
+import { dict as ru } from "./ru"
+import { dict as th } from "./th"
+import { dict as zh } from "./zh"
+import { dict as zht } from "./zht"
+
+const locales = [ar, br, bs, da, de, es, fr, ja, ko, no, pl, ru, th, zh, zht]
+const keys = ["command.session.previous.unseen", "command.session.next.unseen"] as const
+
+describe("i18n parity", () => {
+  test("non-English locales translate targeted unseen session keys", () => {
+    for (const locale of locales) {
+      for (const key of keys) {
+        expect(locale[key]).toBeDefined()
+        expect(locale[key]).not.toBe(en[key])
+      }
+    }
+  })
+})