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def main(request, response):
cookie = request.cookies.first(b"COOKIE_NAME", None)
response_headers = [(b"Content-Type", b"text/javascript"),
(b"Access-Control-Allow-Credentials", b"true")]
origin = request.headers.get(b"Origin", None)
if origin:
response_headers.append((b"Access-Control-Allow-Origin", origin))
cookie_value = b'';
if cookie:
cookie_value = cookie.value;
return (200, response_headers,
b"if ('DedicatedWorkerGlobalScope' in self &&" +
b" self instanceof DedicatedWorkerGlobalScope) {" +
b" postMessage('"+cookie_value+b"');" +
b"} else if (" +
b" 'SharedWorkerGlobalScope' in self &&" +
b" self instanceof SharedWorkerGlobalScope) {" +
b" onconnect = e => e.ports[0].postMessage('"+cookie_value+b"');" +
b"}")