Message from JavaScript discussions

December 2018

— This is the dispatcher error handler code

—

if (block.stack.length === 0) {
  debugLog("Stopping Dispatcher due to an uncaught error...\n");
  this.stop();
  throw error;
}

— Just says "if call stack empty, throw the error up"

— So perhaps I will look into a thenable, but how will it run the callback?

— If the error happens concurrently, should the callback spawn as a new coroutine?

—

function tester() {
  return 123;
}
const thenable = spawn tester();
thenable.then(value => doSomething).catch(error => doSomething);

— There is also a temporal dead zone here I'd have to address

— Yes

— ?

— 1. spawn runs, queues coroutine ahead of current one
2. new coroutine runs, returns value
3. first coroutine sets thenable to get the value

— .then( value => doSomething, error => doSomething)

— So the return value is returned before there is a then set