Strict e-mail address verification, JavaScript

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Sat Jan 08 2022 06:40:20 GMT+0000 (UTC)

Saved by @juliyvchirkov #javascript #email #validation

/**
 * Provides strict e-mail address verification close to RFC
 * Includes support for unicode
 *
 * @param   <string>  E-mail address to verify
 * @returns <boolean> Returns true if e-mail address is considered to be valid,
 *                    false otherwise
 */

export default function validateEmail (email) {
    return typeof email === 'string' &&
        email &&
        email.length < 256 &&
        /^(?:[0-z!#$%&'*+/=?^_`{|}.~-]|[^\u0000-\u007F]){1,64}@(?:(?:[0-z-]|[^\u0000-\u007F]){1,62}\.)+(?:[0-z]|[^\u0000-\u007F]){2,63}$/i.test(email) &&
        !email.includes('..') &&
        !email.startsWith('.') &&
        !email.includes('.@') &&
        !email.includes('-.') &&
        !email.includes('.-')
}

COPY

https://gist.github.com/juliyvchirkov/30337123712f345fab264516800d6302

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Strict e-mail address verification, JavaScript

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