Node.js
npm WARN deprecated popper.js@1.16.1: You can find the new Popper v2 at @popperjs/core, this package is dedicated to the legacy v1
npmパッケージインストール時のWARNING npm WARN deprecated popper.js@1.16.1: You can find the new Popper v2 at @popperjs/core, this pac …