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# Returns a worker script that posts the request's referrer header.
def main(request, response):
referrer = request.headers.get(b"referer", b"")
response_headers = [(b"Content-Type", b"text/javascript"),
(b"Access-Control-Allow-Origin", b"*")]
return (200, response_headers,
b"export const referrer = '"+referrer+b"';")