That is your own code and only your libs then, no imports? Or you work in a language where imports are small (embedded?) so you know them all and maintain them all? Or maybe vanilla js/c without libs? Because import 1 npm and you have 100gb of crap deps you really don't understand which happens to work at moment t0 but at t1, when 1 npm updated, nothing works anymore and can't claim to understand it all as many/most people don't write 'simple code'.