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denoland-deno/cli/tests/subdir/test_worker.js
Bartek Iwańczuk 79b3bc05d6
workers: basic event loop (#3828)
* establish basic event loop for workers
* make "self.close()" inside worker
* remove "runWorkerMessageLoop() - instead manually call global function 
  in Rust when message arrives. This is done in preparation for structured clone
* refactor "WorkerChannel" and use distinct structs for internal 
  and external channels;  "WorkerChannelsInternal" and "WorkerHandle"
* move "State.worker_channels_internal" to "Worker.internal_channels"
* add "WorkerEvent" enum for child->host communication; 
  currently "Message(Buf)" and  "Error(ErrBox)" variants are supported
* add tests for nested workers
* add tests for worker throwing error on startup
2020-02-11 10:04:59 +01:00

22 lines
389 B
JavaScript

let thrown = false;
if (self.name !== "jsWorker") {
throw Error(`Bad worker name: ${self.name}, expected jsWorker`);
}
onmessage = function(e) {
console.log(e.data);
if (thrown === false) {
thrown = true;
throw new SyntaxError("[test error]");
}
postMessage(e.data);
close();
};
onerror = function() {
console.log("called onerror in worker");
return false;
};