1
0
Fork 0
mirror of https://github.com/denoland/deno.git synced 2024-12-12 18:42:18 -05:00
denoland-deno/cli/tests/testdata/workers/worker_event_handlers.js
2022-05-05 01:13:00 +02:00

26 lines
849 B
JavaScript

self.onmessage = (evt) => {
console.log("Target from self.onmessage:", String(evt.target));
};
self.addEventListener("message", (evt) => {
console.log("Target from message event listener:", String(evt.target));
// Throw an error here so the global's error event will fire.
throw new Error("Some error message");
});
self.onerror = (...args) => {
// Take the last 100 characters so the filename doesn't get truncated
// depending on the dev's FS structure.
args = args.map((v) => typeof v == "string" ? v.slice(-100) : v);
console.log("Arguments from self.onerror:", args);
return true;
};
self.addEventListener("error", (evt) => {
// Returning true from self.onerror means that subsequent event listeners
// should see the event as canceled.
console.log("Is event canceled?:", evt.defaultPrevented);
self.close();
});