nl_tokens: attempt to require a file passing args to require if 2nd arg ( err ) is a bool and true - > return the error if an error occurs otherwise return null if error or return module if success
pl_tokens: function acquire ( src , err ) { let mod = _ . attempt ( require , src ) return mod ? _ . isError ( mod ) ? _ . isBoolean ( err ) && err ? <mask> : null : null : mod }