juliyvchirkov

/**
 * Provides strict verification of e-mail address 
 * Includes support for unicode
 *
 * @param  string  E-mail address to verify
 * @return boolean True if e-mail address is valid, false otherwise
 */

const validEmail = (email) =>
    Object.prototype.toString.call(email).slice(8, -1) === String.name &&

juliyvchirkov

Which

World known regular command which, implemented as sh shell function, fully POSIX compliant

The project has been significantly improved and moved to the new permanent location github.com/juliyvchirkov/sh.which