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importScripts('/common/get-host-info.sub.js');
importScripts('test-helpers.sub.js');
self.addEventListener('fetch', event => {
const url = new URL(event.request.url);
const target = url.searchParams.get('target');
const mode = url.searchParams.get('mode') || 'no-cors';
if (target === 'synthetic') {
event.respondWith(new Response('synthetic body', {
headers: {
'Content-Type': 'text/plain',
'Server-Timing': 'metric;dur=123.4;desc="synthetic"'
}
}));
return;
}
if (target) {
event.respondWith(fetch(target, {mode}));
}
});