@polkadot/util/format/getSeparator.js

/**
 * Get the decimal and thousand separator of a locale
 * @param locale
 * @returns {decimal: string, thousand: string}
 */
export function getSeparator(locale) {
    return {
        decimal: (0.1).toLocaleString(locale).substring(1, 2),
        thousand: (1000).toLocaleString(locale).substring(1, 2)
    };
}