youtube: clear Watch Later playlist

yt-clear-watch-later.js

// navigate to Watch Later playlist then enter the following in the JS console (ctrl+shift+j) in chrome)
// note: it simulates browser clicks and runs in a serial fashion
// src: a comment from https://www.alphr.com/delete-all-watch-later-videos-youtube

setInterval(() => { 
    // NOTE: This direct indexing is hacky but my JS skills are too weak to improve it.
    // The index is not stable and can change w/o notice.
    document.querySelectorAll(".style-scope.ytd-menu-renderer")[7].click()
    document.querySelectorAll(".style-scope.ytd-menu-service-item-renderer")[6].click()
    }, 500);