Google PageSpeedInsights flags Base.js as unused Javascript in my report. It’s pretty substantial at 487kb. Appears to come from including the Youtube player iframe api. Is this file needed and if so, does anyone know why it is being flagged as unused JS in the report? Iframe API: https://developers.google.com/youtube/iframe_api_reference Large file that gets flagged on PageSpeedInsights as unused JS: https://www.youtube.com/s/player/c88a8657/player_ias.vflset/en_US/base.js