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Install webpack app on heroku

Heroku doesn't support a webpack buitpack by default. So you normal nodejs build wont build you code. Here is a trick to run youcr build script in heroku deploy

add postinstall section in your package.json, script section. So after downloading necessary dependencies heroku will run this command.

for example:

{
  "script":{
    "postinstall" : "webapck --config=webpack.production.config.js"
  }
}