Handler for stack trace errors and error handling for promises

Introducing my customized error handling function:

function onError(message, source, lineno, colno, error) { sendRequestToSendMail(arguments) }
window.onerror = onError

In addition to that, I have asynchronous tasks utilizing promises and I aim to capture exceptions within them without redundancy:

doSomething1()
    .then(doSomething2(), onError)
    .then(doSomething3(), onError)
    .then(doSomething4(), onError)

Is there a way to create a universal error handler for all promises (similar to window.onError)?

javascripterror-handlingpromise

Answer №1

Instead of relying on a global error handler, consider streamlining your code by simply adding a final .catch() statement to handle any errors thrown in the promise chain:

doTask1()
    .then(doTask2())
    .then(doTask3())
    .then(doTask4())
    .catch(handleError)

This approach will effectively catch rejections from any of the tasks involved.

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