webpack.py

import json
from pathlib import Path

from django import template
from django.conf import settings

register = template.Library()

STATS_FILE = Path(__file__).parents[2] / 'static' / 'stats.json'

def load_stats():
	global stats
	with STATS_FILE.open() as fp:
		stats = json.load(fp)

load_stats()

@register.inclusion_tag('webpack_entrypoint.html', takes_context=True)
def entrypoint(context, name):
	if settings.DEBUG:
		load_stats()

	assets = stats['entrypoints'][name]['assets']
	assets = [item for item in assets if item.endswith('.js')]

	rendered = context.render_context.get('entrypoint_rendered', set())

	# python set is not ordered
	deduped_assets = [item for item in assets if item not in rendered]

	context.render_context['entrypoint_rendered'] = rendered | set(deduped_assets)

	return {
		'assets': deduped_assets,
	}

webpack_entrypoint.html

{% load static %}
{% for item in assets %}
<script src="{% static item %}" crossorigin="anonymous"></script>
{% endfor %}