jinja2 webpack extension for flask/quart: add this to __init__.py

__init__.py

    # Webpack loader: manifest.json map generated by webpacker
    manifest = orjson.loads(open(f'{app.static_folder}/dist/manifest.json').read())

    def webpack(pack):
        filename = 'bundle.js' if app.config['ENV'] == 'development' else manifest.get(pack)
        return f'{app.static_url_path}/dist/{filename}'
    app.jinja_env.globals.update(webpack=webpack)
    
    # Use in template <script src="{{ webpack('main.js') }}"></script>