Headless Browser (Puppeteer) on Heroku

in Heroku console,

heroku buildpacks:add https://github.com/jontewks/puppeteer-heroku-buildpack  --app XXXXAPP_NAMEXXXX
heroku buildpacks:add https://github.com/CoffeeAndCode/puppeteer-heroku-buildpack  --app XXXXAPP_NAMEXXXX

at heroku project directory. (or Heroku WebPage Console)

and install Puppeteer

npm i puppeteer

https://qiita.com/jerrywdlee/items/ffc988956eb75a99bc3c **