Telegram Web K with changes to work inside I2P https://web.telegram.i2p/
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// https://stackoverflow.com/a/14824756
export default function checkRTL(s: string) {
const ltrChars = 'A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02B8\u0300-\u0590\u0800-\u1FFF'+'\u2C00-\uFB1C\uFDFE-\uFE6F\uFEFD-\uFFFF',
rtlChars = '\u0591-\u07FF\uFB1D-\uFDFD\uFE70-\uFEFC',
rtlDirCheck = new RegExp('^[^'+ltrChars+']*['+rtlChars+']');
return rtlDirCheck.test(s);
}