export-on-load-script.py (722B)
1 import datetime 2 3 def main(request, response): 4 # This script serves both preflight and main GET request for cross-origin 5 # static imports from module service workers. 6 # According to https://w3c.github.io/ServiceWorker/#update-algorithm, 7 # `Service-Worker: script` request header is added, which triggers CORS 8 # preflight. 9 response_headers = [(b"Content-Type", b"text/javascript"), 10 (b"Access-Control-Allow-Origin", b"*"), 11 (b"Access-Control-Allow-Headers", b"Service-Worker")] 12 13 body = b"export const importedModules = ['export-on-load-script.js'];" 14 body += b"// %d" % datetime.datetime.now().timestamp() 15 return (200, response_headers, body)