calque/src/features/i18n/context.tsx
2025-01-06 16:33:42 +01:00

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1.9 KiB
TypeScript

import { Accessor, createContext, createMemo, createSignal, ParentComponent, Setter, useContext } from 'solid-js';
import { translator, flatten, Translator, Flatten } from "@solid-primitives/i18n";
import en from '~/i18n/en-GB.json';
import nl from '~/i18n/nl-NL.json';
import { makePersisted } from '@solid-primitives/storage';
type RawDictionary = typeof en;
export type Dictionary = Flatten<RawDictionary>;
export type DictionaryKey = keyof Dictionary;
export type Locale = 'en-GB' | 'nl-NL';
const dictionaries = {
'en-GB': en,
'nl-NL': nl,
} as const;
interface I18nContextType {
readonly t: Translator<Dictionary>;
readonly locale: Accessor<Locale>;
readonly setLocale: Setter<Locale>;
readonly dictionaries: Accessor<Record<Locale, RawDictionary>>;
readonly availableLocales: Accessor<Locale[]>;
}
const I18nContext = createContext<I18nContextType>();
export const I18nProvider: ParentComponent = (props) => {
const [locale, setLocale, initLocale] = makePersisted(createSignal<Locale>('en-GB'), { name: 'locale' });
const dictionary = createMemo(() => flatten(dictionaries[locale()]));
const t = translator(dictionary);
const ctx: I18nContextType = {
t,
locale,
setLocale,
dictionaries: createMemo(() => dictionaries),
availableLocales: createMemo(() => Object.keys(dictionaries) as Locale[]),
};
return <I18nContext.Provider value={ctx}>{props.children}</I18nContext.Provider>
};
export const useI18n = () => {
const context = useContext(I18nContext);
if (!context) {
throw new Error(`'useI18n' is called outside the scope of an <I18nProvider />`);
}
return { t: context.t, locale: context.locale };
};
export const internal_useI18n = () => {
const context = useContext(I18nContext);
if (!context) {
throw new Error(`'useI18n' is called outside the scope of an <I18nProvider />`);
}
return context;
};