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60 lines
2.3 KiB
TypeScript
60 lines
2.3 KiB
TypeScript
// @target: es2020
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl#Locale_identification_and_negotiation
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const count = 26254.39;
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const date = new Date("2012-05-24");
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function log(locale: string) {
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console.log(
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`${new Intl.DateTimeFormat(locale).format(date)} ${new Intl.NumberFormat(locale).format(count)}`
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);
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}
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log("en-US");
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// expected output: 5/24/2012 26,254.39
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log("de-DE");
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// expected output: 24.5.2012 26.254,39
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/RelativeTimeFormat
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const rtf1 = new Intl.RelativeTimeFormat('en', { style: 'narrow' });
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console.log(rtf1.format(3, 'quarter'));
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//expected output: "in 3 qtrs."
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console.log(rtf1.format(-1, 'day'));
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//expected output: "1 day ago"
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const rtf2 = new Intl.RelativeTimeFormat('es', { numeric: 'auto' });
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console.log(rtf2.format(2, 'day'));
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//expected output: "pasado mañana"
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DisplayNames
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const regionNamesInEnglish = new Intl.DisplayNames(['en'], { type: 'region' });
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const regionNamesInTraditionalChinese = new Intl.DisplayNames(['zh-Hant'], { type: 'region' });
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console.log(regionNamesInEnglish.of('US'));
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// expected output: "United States"
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console.log(regionNamesInTraditionalChinese.of('US'));
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// expected output: "美國"
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const locales1 = ['ban', 'id-u-co-pinyin', 'de-ID'];
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const options1 = { localeMatcher: 'lookup' } as const;
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console.log(Intl.DisplayNames.supportedLocalesOf(locales1, options1).join(', '));
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new Intl.Locale(); // should error
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new Intl.Locale(new Intl.Locale('en-US'));
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new Intl.DisplayNames(); // TypeError: invalid_argument
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new Intl.DisplayNames('en'); // TypeError: invalid_argument
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new Intl.DisplayNames('en', {}); // TypeError: invalid_argument
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console.log((new Intl.DisplayNames(undefined, {type: 'language'})).of('en-GB')); // "British English"
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const localesArg = ["es-ES", new Intl.Locale("en-US")];
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console.log((new Intl.DisplayNames(localesArg, {type: 'language'})).resolvedOptions().locale); // "es-ES"
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console.log(Intl.DisplayNames.supportedLocalesOf(localesArg)); // ["es-ES", "en-US"]
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console.log(Intl.DisplayNames.supportedLocalesOf()); // []
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console.log(Intl.DisplayNames.supportedLocalesOf(localesArg, {})); // ["es-ES", "en-US"]
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