Created
February 3, 2022 22:36
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What error is thrown when a fetch is aborted?
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| // Paste in your DevTools console to inspect the error object thrown by fetch | |
| const controller = new AbortController() | |
| fetch(window.location.href, {signal: controller.signal}).catch((err) => { | |
| console.dir(err) | |
| console.assert(err.name === 'AbortError', `${err.name} === 'AbortError'`) | |
| console.assert(err.code === 20, `${err.code} === 20`) | |
| console.assert( | |
| err.message === 'The user aborted a request.', | |
| `${err.message} === 'The user aborted a request.'` | |
| ) | |
| console.assert(err instanceof DOMException, `err instanceof DOMException`) | |
| console.assert(err instanceof Error, `err instanceof Error`) | |
| console.assert( | |
| err.toString() === 'AbortError: The user aborted a request.', | |
| `err.toString() === 'AbortError: The user aborted a request.'` | |
| ) | |
| console.assert( | |
| Object.prototype.toString.call(err) === '[object DOMException]', | |
| `Object.prototype.toString.call(err) === '[object DOMException]'` | |
| ) | |
| }) | |
| controller.abort() |
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