@formatjs/intl-displaynames
Version:
Polyfill for: https://tc39.es/proposal-intl-displaynames
211 lines (210 loc) • 10.3 kB
JavaScript
import { __assign } from "tslib";
import { CanonicalizeLocaleList, GetOption, GetOptionsObject, IsWellFormedCurrencyCode, SupportedLocales, ToString, getInternalSlot, getMultiInternalSlots, invariant, setInternalSlot, } from '@formatjs/ecma402-abstract';
import { CanonicalCodeForDisplayNames } from './abstract/CanonicalCodeForDisplayNames';
import { IsValidDateTimeFieldCode } from './abstract/IsValidDateTimeFieldCode';
import { ResolveLocale } from '@formatjs/intl-localematcher';
var DisplayNames = /** @class */ (function () {
function DisplayNames(locales, options) {
var _newTarget = this.constructor;
if (_newTarget === undefined) {
throw TypeError("Constructor Intl.DisplayNames requires 'new'");
}
var requestedLocales = CanonicalizeLocaleList(locales);
options = GetOptionsObject(options);
var opt = Object.create(null);
var localeData = DisplayNames.localeData;
var matcher = GetOption(options, 'localeMatcher', 'string', ['lookup', 'best fit'], 'best fit');
opt.localeMatcher = matcher;
var r = ResolveLocale(Array.from(DisplayNames.availableLocales), requestedLocales, opt, [], // there is no relevantExtensionKeys
DisplayNames.localeData, DisplayNames.getDefaultLocale);
var style = GetOption(options, 'style', 'string', ['narrow', 'short', 'long'], 'long');
setSlot(this, 'style', style);
var type = GetOption(options, 'type', 'string', ['language', 'region', 'script', 'currency', 'calendar', 'dateTimeField'], undefined);
if (type === undefined) {
throw TypeError("Intl.DisplayNames constructor requires \"type\" option");
}
setSlot(this, 'type', type);
var fallback = GetOption(options, 'fallback', 'string', ['code', 'none'], 'code');
setSlot(this, 'fallback', fallback);
setSlot(this, 'locale', r.locale);
var dataLocale = r.dataLocale;
var dataLocaleData = localeData[dataLocale];
invariant(!!dataLocaleData, "Missing locale data for ".concat(dataLocale));
setSlot(this, 'localeData', dataLocaleData);
invariant(dataLocaleData !== undefined, "locale data for ".concat(r.locale, " does not exist."));
var types = dataLocaleData.types;
invariant(typeof types === 'object' && types != null, 'invalid types data');
var typeFields = types[type];
invariant(typeof typeFields === 'object' && typeFields != null, 'invalid typeFields data');
var languageDisplay = GetOption(options, 'languageDisplay', 'string', ['dialect', 'standard'], 'dialect');
if (type === 'language') {
setSlot(this, 'languageDisplay', languageDisplay);
// Using types[type] instead of typeFields because TypeScript cannot infer the correct type
var typeFields_1 = types[type][languageDisplay];
invariant(typeof typeFields_1 === 'object' && typeFields_1 != null, 'invalid language typeFields data');
}
// Using types[type] instead of typeFields because TypeScript cannot infer the correct type
var styleFields = type === 'language'
? types[type][languageDisplay][style]
: types[type][style];
invariant(typeof styleFields === 'object' && styleFields != null, 'invalid styleFields data');
setSlot(this, 'fields', styleFields);
}
DisplayNames.supportedLocalesOf = function (locales, options) {
return SupportedLocales(DisplayNames.availableLocales, CanonicalizeLocaleList(locales), options);
};
DisplayNames.__addLocaleData = function () {
var data = [];
for (var _i = 0; _i < arguments.length; _i++) {
data[_i] = arguments[_i];
}
for (var _a = 0, data_1 = data; _a < data_1.length; _a++) {
var _b = data_1[_a], d = _b.data, locale = _b.locale;
var minimizedLocale = new Intl.Locale(locale)
.minimize()
.toString();
DisplayNames.localeData[locale] = DisplayNames.localeData[minimizedLocale] = d;
DisplayNames.availableLocales.add(minimizedLocale);
DisplayNames.availableLocales.add(locale);
if (!DisplayNames.__defaultLocale) {
DisplayNames.__defaultLocale = minimizedLocale;
}
}
};
DisplayNames.prototype.of = function (code) {
checkReceiver(this, 'of');
var type = getSlot(this, 'type');
var codeAsString = ToString(code);
if (!isValidCodeForDisplayNames(type, codeAsString)) {
throw RangeError('invalid code for Intl.DisplayNames.prototype.of');
}
var _a = getMultiInternalSlots(__INTERNAL_SLOT_MAP__, this, 'localeData', 'style', 'fallback'), localeData = _a.localeData, style = _a.style, fallback = _a.fallback;
// Canonicalize the case.
var canonicalCode = CanonicalCodeForDisplayNames(type, codeAsString);
var name;
if (type === 'language') {
var languageDisplay = getSlot(this, 'languageDisplay');
name = getNameForTypeLanguage(languageDisplay, localeData, style, canonicalCode, fallback);
}
else {
// All the other types
var typesData = localeData.types[type];
name = typesData[style][canonicalCode] || typesData.long[canonicalCode];
}
if (name !== undefined) {
return name;
}
if (fallback === 'code') {
return codeAsString;
}
};
DisplayNames.prototype.resolvedOptions = function () {
checkReceiver(this, 'resolvedOptions');
return __assign({}, getMultiInternalSlots(__INTERNAL_SLOT_MAP__, this, 'locale', 'style', 'type', 'fallback', 'languageDisplay'));
};
DisplayNames.getDefaultLocale = function () {
return DisplayNames.__defaultLocale;
};
DisplayNames.localeData = {};
DisplayNames.availableLocales = new Set();
DisplayNames.__defaultLocale = '';
DisplayNames.polyfilled = true;
return DisplayNames;
}());
export { DisplayNames };
// https://tc39.es/proposal-intl-displaynames/#sec-isvalidcodefordisplaynames
function isValidCodeForDisplayNames(type, code) {
switch (type) {
case 'language':
// subset of unicode_language_id
// languageCode ["-" scriptCode] ["-" regionCode] *("-" variant)
// where:
// - languageCode is either a two letters ISO 639-1 language code or a three letters ISO 639-2 language code.
// - scriptCode is should be an ISO-15924 four letters script code
// - regionCode is either an ISO-3166 two letters region code, or a three digits UN M49 Geographic Regions.
return /^[a-z]{2,3}(-[a-z]{4})?(-([a-z]{2}|\d{3}))?(-([a-z\d]{5,8}|\d[a-z\d]{3}))*$/i.test(code);
case 'region':
// unicode_region_subtag
return /^([a-z]{2}|\d{3})$/i.test(code);
case 'script':
// unicode_script_subtag
return /^[a-z]{4}$/i.test(code);
case 'currency':
return IsWellFormedCurrencyCode(code);
case 'calendar':
// unicode locale identifier type
return /^[a-z0-9]{3,8}([-_][a-z0-9]{3,8})*$/i.test(code);
case 'dateTimeField':
return IsValidDateTimeFieldCode(code);
}
}
try {
// IE11 does not have Symbol
if (typeof Symbol !== 'undefined' && Symbol.toStringTag) {
Object.defineProperty(DisplayNames.prototype, Symbol.toStringTag, {
value: 'Intl.DisplayNames',
configurable: true,
enumerable: false,
writable: false,
});
}
Object.defineProperty(DisplayNames, 'length', {
value: 2,
writable: false,
enumerable: false,
configurable: true,
});
}
catch (e) {
// Make test 262 compliant
}
var __INTERNAL_SLOT_MAP__ = new WeakMap();
function getSlot(instance, key) {
return getInternalSlot(__INTERNAL_SLOT_MAP__, instance, key);
}
function setSlot(instance, key, value) {
setInternalSlot(__INTERNAL_SLOT_MAP__, instance, key, value);
}
function checkReceiver(receiver, methodName) {
if (!(receiver instanceof DisplayNames)) {
throw TypeError("Method Intl.DisplayNames.prototype.".concat(methodName, " called on incompatible receiver"));
}
}
function getNameForTypeLanguage(languageDisplay, localeData, style, canonicalCode, fallback) {
// First, try to get the name using the canonicalCode
var typesData = localeData.types.language[languageDisplay];
var name = typesData[style][canonicalCode] || typesData.long[canonicalCode];
if (name === undefined) {
// If no name has been found using the canonicalCode,
// check if the latter contains a region sub tag
var regionMatch = /-([a-z]{2}|\d{3})\b/i.exec(canonicalCode);
if (regionMatch) {
// Extract the language and region sub tags
var languageSubTag = canonicalCode.substring(0, regionMatch.index) +
canonicalCode.substring(regionMatch.index + regionMatch[0].length);
var regionSubTag = regionMatch[1];
// Let's try again using languageSubTag this time
var name_1 = typesData[style][languageSubTag] || typesData.long[languageSubTag];
// If a name has been found and a region sub tag exists,
// compose them together or use the code fallback
if (name_1 !== undefined && regionSubTag) {
// Retrieve region display names
var regionsData = localeData.types.region;
var regionDisplayName = regionsData[style][regionSubTag] || regionsData.long[regionSubTag];
if (regionDisplayName || fallback === 'code') {
// Interpolate into locale-specific pattern.
var pattern = localeData.patterns.locale;
return pattern
.replace('{0}', name_1)
.replace('{1}', regionDisplayName || regionSubTag);
}
}
else {
return name_1;
}
}
}
else {
return name;
}
}