| 1 | import { match } from '@formatjs/intl-localematcher';
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| 2 | import { supportedLocales } from './supported-locales.generated';
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| 3 | function supportedLocalesOf(locale) {
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| 4 | if (!locale) {
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| 5 | return true;
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| 6 | }
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| 7 | var locales = Array.isArray(locale) ? locale : [locale];
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| 8 | return (Intl.RelativeTimeFormat.supportedLocalesOf(locales).length ===
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| 9 | locales.length);
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| 10 | }
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| 11 | function hasResolvedOptionsNumberingSystem(locale) {
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| 12 | try {
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| 13 | return ('numberingSystem' in
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| 14 | new Intl.RelativeTimeFormat(locale || 'en', {
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| 15 | numeric: 'auto',
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| 16 | }).resolvedOptions());
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| 17 | }
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| 18 | catch (_) {
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| 19 | return false;
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| 20 | }
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| 21 | }
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| 22 | export function shouldPolyfill(locale) {
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| 23 | if (locale === void 0) { locale = 'en'; }
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| 24 | if (!('RelativeTimeFormat' in Intl) ||
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| 25 | !supportedLocalesOf(locale) ||
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| 26 | !hasResolvedOptionsNumberingSystem(locale)) {
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| 27 | return match([locale], supportedLocales, 'en');
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| 28 | }
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| 29 | }
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