relative-time-format/modules/PluralRules.js

A convenient Intl.RelativeTimeFormat polyfill

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

// Importing `PluralRule` polyfill from a separate package
// results in a bundle that is larger by 1kB for some reason.
// export { default as default } from 'intl-plural-rules-polyfill/cardinal'
import PluralRuleFunctions from "./PluralRuleFunctions";
import getPluralRulesLocale from "./getPluralRulesLocale";
/**
 * `Intl.PluralRules` polyfill.
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/PluralRules
 */

var PluralRules =
/*#__PURE__*/
function () {
  function PluralRules(locale, options) {
    _classCallCheck(this, PluralRules);

    var locales = PluralRules.supportedLocalesOf(locale);

    if (locales.length === 0) {
      throw new RangeError("Unsupported locale: " + locale);
    }

    if (options && options.type !== "cardinal") {
      throw new RangeError("Only \"cardinal\" \"type\" is supported");
    }

    this.$ = PluralRuleFunctions[getPluralRulesLocale(locales[0])];
  }

  _createClass(PluralRules, [{
    key: "select",
    value: function select(number) {
      return this.$(number);
    }
  }], [{
    key: "supportedLocalesOf",
    value: function supportedLocalesOf(locales) {
      if (typeof locales === "string") {
        locales = [locales];
      }

      return locales.filter(function (locale) {
        return PluralRuleFunctions[getPluralRulesLocale(locale)];
      });
    }
  }]);

  return PluralRules;
}();

export { PluralRules as default };
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