18 lines
660 B
JavaScript
18 lines
660 B
JavaScript
function setMessageHandler(response) {
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onmessage = e => {
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e.source.postMessage(response);
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};
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}
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setMessageHandler("handler-before-throw");
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// importScripts will throw when the ServiceWorker is past the "intalling" state.
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importScripts(`empty.js?${Date.now()}`);
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// When importScripts throws an uncaught exception, these calls should never be
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// made and the message handler should remain responding "handler-before-throw".
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setMessageHandler("handler-after-throw");
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// There needs to be a fetch handler to avoid the no-fetch optimizaiton,
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// which will skip starting up this worker.
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onfetch = e => e.respondWith(new Response("handler-after-throw"));
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