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const BODY = `
<script>
opener.postMessage("ok!", "*");
close();
</script>`;
function handleRequest(request, response) {
// avoid confusing cache behaviors
response.setHeader("Cache-Control", "no-cache", false);
if (request.queryString.includes("unset")) {
response.setHeader("Set-Cookie", "test=wow", true);
}
if (request.queryString.includes("none")) {
response.setHeader("Set-Cookie", "test2=wow2; samesite=none", true);
}
if (request.queryString.includes("lax")) {
response.setHeader("Set-Cookie", "test3=wow3; samesite=lax", true);
}
response.write(BODY);
}