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refactor(desktop): share one active→default→key i18n resolver

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Collapse the fallback walk out of `translateNow` into a single `translateFrom`
that takes a per-locale message source, so any translator (core catalog or a
plugin's bundles) reuses the exact dot-path walk, interpolation, and
active-locale/English/raw-key chain. Adds `getRuntimeI18nLocale`.
This commit is contained in:
Brooklyn Nicholson 2026-07-19 00:03:39 -04:00
parent 7db2decbea
commit 228655a73a
1 changed files with 31 additions and 18 deletions
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49
apps/desktop/src/i18n/runtime.ts
View file

@ -1,6 +1,6 @@
import { TRANSLATIONS } from './catalog'
import { DEFAULT_LOCALE } from './languages'
import type { Locale, Translations } from './types'
import type { Locale } from './types'
let runtimeLocale: Locale = DEFAULT_LOCALE
@ -8,17 +8,13 @@ function isRecord(value: unknown): value is Record<string, unknown> {
return typeof value === 'object' && value !== null && !Array.isArray(value)
}
function resolvePath(catalog: Translations, key: string): unknown {
return key.split('.').reduce<unknown>((current, part) => {
if (!isRecord(current)) {
return undefined
}
return current[part]
}, catalog)
/** Walk a dot-path (`a.b.c`) into a nested message tree. */
function resolvePath(source: unknown, key: string): unknown {
return key.split('.').reduce<unknown>((current, part) => (isRecord(current) ? current[part] : undefined), source)
}
function renderTranslation(value: unknown, args: unknown[]): string | null {
/** A string is returned as-is, a function is called with `args`, else `null`. */
function render(value: unknown, args: unknown[]): null | string {
if (typeof value === 'string') {
return value
}
@ -30,19 +26,22 @@ function renderTranslation(value: unknown, args: unknown[]): string | null {
return null
}
export function setRuntimeI18nLocale(locale: Locale) {
runtimeLocale = locale
}
export function translateNow(key: string, ...args: unknown[]): string {
const active = renderTranslation(resolvePath(TRANSLATIONS[runtimeLocale], key), args)
/** The active → DEFAULT → key resolution every translator shares. `source`
* yields a message tree per locale — the app catalog, or a plugin's bundles. */
export function translateFrom(
source: (locale: Locale) => unknown,
locale: Locale,
key: string,
args: unknown[]
): string {
const active = render(resolvePath(source(locale), key), args)
if (active !== null) {
return active
}
if (runtimeLocale !== DEFAULT_LOCALE) {
const fallback = renderTranslation(resolvePath(TRANSLATIONS[DEFAULT_LOCALE], key), args)
if (locale !== DEFAULT_LOCALE) {
const fallback = render(resolvePath(source(DEFAULT_LOCALE), key), args)
if (fallback !== null) {
return fallback
@ -51,3 +50,17 @@ export function translateNow(key: string, ...args: unknown[]): string {
return key
}
export function setRuntimeI18nLocale(locale: Locale) {
runtimeLocale = locale
}
/** The locale module-level translators resolve against (the app's active
* `display.language`). Plugin `ctx.i18n.t` reads this too. */
export function getRuntimeI18nLocale(): Locale {
return runtimeLocale
}
export function translateNow(key: string, ...args: unknown[]): string {
return translateFrom(locale => TRANSLATIONS[locale], runtimeLocale, key, args)
}