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import { desktopNativePluralCategories } from "./desktop-native"
const appLocales = [
"ar",
"br",
"bs",
"da",
"de",
"es",
"fr",
"ja",
"ko",
"no",
"pl",
"ru",
"uk",
"th",
"tr",
"zh",
"zht",
"hi",
"nl",
"id",
"vi",
"it",
"ur",
"pa",
"az",
"fi",
"sv",
"am",
"bg",
"bn",
"ca",
"cs",
"dv",
"dz",
"el",
"et",
"fa",
"fo",
"hr",
"hu",
"hy",
"is",
"ka",
"km",
"lo",
"lt",
"lv",
"mk",
"mn",
"ms",
"my",
"ne",
"ro",
"si",
"sk",
"sl",
"sq",
"sr",
"tg",
"tk",
"uz",
] as const
const desktopLocales = appLocales
const pluralCategories = new Map(
appLocales.map(
(locale) =>
[
locale,
desktopNativePluralCategories(locale).filter((category) => category !== "one" && category !== "other"),
] as const,
),
)
const domains = [
{
name: "app",
source: "./en.ts",
target: (locale: string) => `./${locale}.ts`,
locales: appLocales,
},
{
name: "ui",
source: "../../../ui/src/i18n/en.ts",
target: (locale: string) => `../../../ui/src/i18n/${locale}.ts`,
locales: appLocales,
},
{
name: "desktop",
source: "../../../desktop/src/renderer/i18n/en.ts",
target: (locale: string) => `../../../desktop/src/renderer/i18n/${locale}.ts`,
locales: desktopLocales,
},
] as const
describe("i18n parity", () => {
test("non-English locales have every English key and required plural variants", async () => {
for (const domain of domains) {
const source = await dictionary(domain.source)
for (const locale of domain.locales) {
const target = await dictionary(domain.target(locale))
const missing = Object.keys(source).filter((key) => !Object.hasOwn(target, key))
const extra = Object.keys(target)
.filter((key) => !Object.hasOwn(source, key))
.sort()
const expected = pluralFamilies(source)
.flatMap((key) => (pluralCategories.get(locale) ?? []).map((category) => `${key}.${category}`))
.sort()
expect({ domain: domain.name, locale, missing, extra }).toEqual({
domain: domain.name,
locale,
missing: [],
extra: expected,
})
}
}
})
test("non-English locales preserve English placeholders", async () => {
for (const domain of domains) {
const source = await dictionary(domain.source)
for (const locale of domain.locales) {
const target = await dictionary(domain.target(locale))
const mismatched = Object.keys(source).filter(
(key) => Object.hasOwn(target, key) && placeholders(source[key]).join() !== placeholders(target[key]).join(),
)
const pluralMismatched = pluralFamilies(source).flatMap((key) =>
(pluralCategories.get(locale) ?? [])
.map((category) => `${key}.${category}`)
.filter((variant) => placeholders(source[`${key}.other`]).join() !== placeholders(target[variant]).join()),
)
expect({ domain: domain.name, locale, mismatched, pluralMismatched }).toEqual({
domain: domain.name,
locale,
mismatched: [],
pluralMismatched: [],
})
}
}
})
test("non-English locales translate targeted unseen session keys", async () => {
const source = await dictionary("./en.ts")
for (const locale of appLocales) {
const target = await dictionary(`./${locale}.ts`)
for (const key of ["command.session.previous.unseen", "command.session.next.unseen"]) {
expect(target[key]).toBeDefined()
expect(target[key]).not.toBe(source[key])
}
}
})
test("changed-file summary keys preserve rendered English copy and localize complete phrases", async () => {
const source = await dictionary("../../../ui/src/i18n/en.ts")
expect(source["ui.sessionTurn.diffs.changed.one"].replace("{{count}}", "1")).toBe("1 Changed file")
expect(source["ui.sessionTurn.diffs.changed.other"].replace("{{count}}", "2")).toBe("2 Changed files")
expect(source["ui.sessionTurn.diffs.changed"]).toBeUndefined()
for (const locale of appLocales) {
const target = await dictionary(`../../../ui/src/i18n/${locale}.ts`)
for (const key of ["ui.sessionTurn.diffs.changed.one", "ui.sessionTurn.diffs.changed.other"]) {
expect(target[key].trim()).not.toBe("")
expect(placeholders(target[key])).toEqual(["count"])
}
}
})
})
describe("i18n plural parity", () => {
test("locale-specific categories exist and preserve count placeholders", async () => {
for (const domain of domains.slice(0, 2)) {
const source = await dictionary(domain.source)
const families = pluralFamilies(source)
for (const locale of domain.locales) {
const target = await dictionary(domain.target(locale))
const missing = families.flatMap((key) =>
(pluralCategories.get(locale) ?? [])
.map((category) => `${key}.${category}`)
.filter((variant) => !Object.hasOwn(target, variant)),
)
const mismatched = families.flatMap((key) =>
(pluralCategories.get(locale) ?? [])
.map((category) => `${key}.${category}`)
.filter(
(variant) =>
Object.hasOwn(target, variant) &&
placeholders(source[`${key}.other`]).join() !== placeholders(target[variant]).join(),
),
)
expect({ domain: domain.name, locale, missing, mismatched }).toEqual({
domain: domain.name,
locale,
missing: [],
mismatched: [],
})
}
}
})
})
async function dictionary(file: string) {
const module: unknown = await import(file)
if (typeof module !== "object" || module === null || !("dict" in module) || !isDictionary(module.dict)) {
throw new Error(`Invalid translation dictionary: ${file}`)
}
return module.dict
}
function isDictionary(value: unknown): value is Record<string, string> {
if (typeof value !== "object" || value === null || Array.isArray(value)) return false
return Object.values(value).every((item) => typeof item === "string")
}
function placeholders(value: string) {
return Array.from(value.matchAll(/{{\s*([^}]+?)\s*}}/g), (match) => match[1]).sort()
}
function pluralFamilies(dictionary: Record<string, string>) {
return Object.keys(dictionary)
.filter(
(key) =>
key.endsWith(".one") &&
dictionary[key].includes("{{count}}") &&
dictionary[`${key.slice(0, -4)}.other`]?.includes("{{count}}"),
)
.map((key) => key.slice(0, -4))
}
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