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Introduce locale searching

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Some locales may be absent or incorrect in default packages so these
should be obtained from other places instead.
This commit is contained in:
kotwys 2020-07-23 12:47:18 +04:00
parent d84497ac28
commit f2e1047fd8
1 changed files with 50 additions and 19 deletions
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69
packages/app/services/i18n/intlPolyfill.ts
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@ -7,6 +7,53 @@ const needs = {
relative: !window?.Intl?.RelativeTimeFormat, relative: !window?.Intl?.RelativeTimeFormat,
}; };
type ImportFunction = (l: string, m: string) => Promise<any>;
// WARNING: .js extension is required for proper function of ContextReplacementPlugin
// Thoroughly described imports are needed for Webpack to properly create chunks.
const LOCALE_PATH = new Map<string, ImportFunction>([
[
'*:common',
(l) =>
import(
/* webpackChunkName: intl-[request] */
`intl/locale-data/jsonp/${l}.js`
),
],
[
'*:*',
(l, m) =>
m === 'pluralrules'
? import(
/* webpackChunkName: intl-pluralrules-[request] */
`@formatjs/intl-pluralrules/dist/locale-data/${l}.js`
)
: import(
/* webpackChunkName: intl-relativetimeformat-[request] */
`@formatjs/intl-relativetimeformat/dist/locale-data/${l}.js`
),
],
]);
/**
* Finds and applies localizations for Intl polyfills.
*
* @param {string} locale - locale to find
* @param {string} module - module to find locale for
* @returns {Promise} promise resolved when module is loaded
*/
function findLocale(locale: string, module: string): Promise<any> {
for (const [key, found] of LOCALE_PATH) {
const [lc, api] = key.split(':');
if ((lc === locale || lc === '*') && (api === module || api === '*')) {
return found(locale, module);
}
}
return Promise.resolve();
}
/** /**
* All modern browsers currently do support all required Intl APIs, * All modern browsers currently do support all required Intl APIs,
* for the outdated browsers we will polyfill this api on demand * for the outdated browsers we will polyfill this api on demand
@ -61,15 +108,7 @@ async function polyfillIntl(locale: string): Promise<void> {
window.Intl = Intl; window.Intl = Intl;
// MUST be loaded in series with the main polyfill // MUST be loaded in series with the main polyfill
await Promise.all([ await Promise.all([findLocale(locale, 'common'), polyfillPlural(locale), polyfillRelative(locale)]);
import(
// WARNING: .js extension is required for proper function of ContextReplacementPlugin
/* webpackChunkName: "intl-[request]" */
`intl/locale-data/jsonp/${locale}.js`
),
polyfillPlural(locale),
polyfillRelative(locale),
]);
} }
async function polyfillPlural(locale: string): Promise<void> { async function polyfillPlural(locale: string): Promise<void> {
@ -79,11 +118,7 @@ async function polyfillPlural(locale: string): Promise<void> {
); );
// MUST be loaded in series with the main polyfill // MUST be loaded in series with the main polyfill
await import( await findLocale(locale, 'pluralrules');
// WARNING: .js extension is required for proper function of ContextReplacementPlugin
/* webpackChunkName: "intl-pluralrules-[request]" */
`@formatjs/intl-pluralrules/dist/locale-data/${locale}.js`
);
} }
async function polyfillRelative(locale: string): Promise<void> { async function polyfillRelative(locale: string): Promise<void> {
@ -93,11 +128,7 @@ async function polyfillRelative(locale: string): Promise<void> {
); );
// MUST be loaded in series with the main polyfill // MUST be loaded in series with the main polyfill
await import( await findLocale(locale, 'relativetimeformat');
// WARNING: .js extension is required for proper function of ContextReplacementPlugin
/* webpackChunkName: "intl-relativetimeformat-[request]" */
`@formatjs/intl-relativetimeformat/dist/locale-data/${locale}.js`
);
} }
export default polyfill; export default polyfill;