Astra!ny-start

1 files changed, 28 insertions, 0 deletions

diff --git a/src/i18n/index.ts b/src/i18n/index.ts
new file mode 100644
index 0000000..2f46dd0
--- /dev/null
+++ b/src/i18n/index.ts
@@ -0,0 +1,28 @@
+import { en, type MessageKey } from './en';
+import { da } from './da';
+
+// Add a catalog and register its BCP 47 locale here to support another language.
+// Missing messages always fall back to English. Locale selection belongs to the shell.
+const catalogs: Record<string, Partial<Record<MessageKey, string>>> = { en, da };
+export const defaultLocale = 'en';
+export type Parameters = Record<string, string | number>;
+
+export function createI18n(requestedLocale = defaultLocale) {
+  const locale = Object.hasOwn(catalogs, requestedLocale) ? requestedLocale : defaultLocale;
+  const catalog = catalogs[locale];
+  return {
+    locale,
+    t(key: MessageKey, parameters: Parameters = {}): string {
+      const message = catalog[key] ?? en[key];
+      return message.replace(/\{(\w+)\}/g, (_, name: string) => String(parameters[name] ?? `{${name}}`));
+    },
+    number(value: number, options: Intl.NumberFormatOptions = {}): string {
+      return new Intl.NumberFormat(locale, { maximumFractionDigits: 2, ...options }).format(
+        Object.is(value, -0) ? 0 : value,
+      );
+    },
+  };
+}
+
+export type I18n = ReturnType<typeof createI18n>;
+export type { MessageKey };