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feat: store locale in localStorage to persist across page loads

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This commit is contained in:
Benjamin Singleton 2026-02-09 20:56:52 -06:00 • committed by Sheldon Cooper
parent 4852f2d5d1
commit 59674292be
3 changed files with 70 additions and 69 deletions
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42
apps/vdn-static/src/i18n/index.ts
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@ -1,20 +1,50 @@
import en_US from "../locales/en_US";
import vp_VL from "../locales/vp_VL";
import wp_VL from "../locales/wp_VL";
import { computed, readonly, ref, type DeepReadonly } from "vue";
import { computed, readonly, type DeepReadonly } from "vue";
import type { Locale } from "./locale";
import type { DeepPartial } from "@/utils/deep-partial";
import { useLocalStorage } from "@vueuse/core";
import { type } from "arktype";
export const LOCALE_IDS = ["en_US", "vp_VL", "wp_VL"] as const;
export type LocaleId = (typeof LOCALE_IDS)[number];
export type LocaleId = typeof LocaleId.infer;
export const LocaleId = type.enumerated(...LOCALE_IDS);
export const DEFAULT_LOCALE_ID = "en_US" satisfies LocaleId;
const locales = { en_US, vp_VL, wp_VL } as const satisfies {
en_US: Locale;
} & Record<Exclude<LocaleId, "en_US">, DeepPartial<Locale>>;
} & Record<Exclude<LocaleId, typeof DEFAULT_LOCALE_ID>, DeepPartial<Locale>>;
export const localeId = ref<LocaleId>("en_US");
// users could manually edit localStorage to make this value anything, so we need to validate it
const localStorageLocaleId = useLocalStorage<unknown>(
"localeId",
DEFAULT_LOCALE_ID,
);
export function useLocale(opt: UseLocaleOptions = {}) {
export const localeId = computed({
get: (): LocaleId => {
const localeIdRes = LocaleId(localStorageLocaleId.value);
if (localeIdRes instanceof type.errors) {
// if invalid LocaleId, reset to default
localStorageLocaleId.value = DEFAULT_LOCALE_ID;
return DEFAULT_LOCALE_ID;
}
// else return user's selection
const localeId = localeIdRes;
return localeId;
},
// custom setter to ensure it is only set to a valid LocaleId by our code
// (since the localStorage ref is typed as `unknown`, it can be set to any value)
set: (id: LocaleId) => {
localStorageLocaleId.value = id;
},
});
export const useLocale = (opt: UseLocaleOptions = {}) => {
const locale = computed<DeepReadonly<Locale>>(() => {
return fallbackProxy<Locale>(
locales[opt.locale ?? localeId.value],
@ -23,7 +53,7 @@ export function useLocale(opt: UseLocaleOptions = {}) {
});
return readonly(locale);
}
};
export interface UseLocaleOptions {
locale?: LocaleId;