# getLocalesByRegionId
Returns a flat array of locales associated with region ID provided as a parameter.
It throws RangeError
when provided region ID is non-existent or invalid.
const { BlizzAPI } = require('blizzapi');
console.log(BlizzAPI.getLocalesByRegionId(1));
// [
// "en_US",
// "es_MX",
// "pt_BR"
// ]
console.log(BlizzAPI.getRegionNameById(44));
// RangeError: 44 is not a valid parameter for getConstantByRegionId(44, 'LOCALES')