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@jsenv/abort
Advanced tools
Help to write code accepting an abortSignal.
fetch_demo.mjs
import { customFetch } from "./fetch_custom.mjs"
const abortController = new AbortController()
const signal = abortController.signal
process.on("warning", () => {
abortController.abort()
})
await customFetch("http://example.com", { signal })
Code above pass an abort signal to customFetch
.
Let's see how "@jsenv/abort"
helps to manage the signal received.
fetch_custom.mjs
import { Abort } from "@jsenv/abort"
export const customFetch = (
url,
{ signal = new AbortController().signal } = {},
) => {
// create an operation
const fetchOperation = Abort.startOperation()
// abort according to signal received in param
fetchOperation.addAbortSignal(signal)
// also abort on SIGINT
const SIGINTAbortSource = fetchOperation.addAbortSource((abort) => {
process.on("SIGINT", abort)
return () => {
process.removeListener("SIGINT", abort)
}
})
// also abort after 5s
const timeoutAbortSource = fetchOperation.timeout(5000)
try {
const response = await fetch(url, { signal: fetchOperation.signal })
return response
} catch (e) {
if (Abort.isAbortError(e)) {
if (SIGINTAbortSource.signal.aborted) {
// aborted by SIGINT
}
if (timeoutAbortSource.signal.aborted) {
// aborted by timeout
}
if (signal.aborted) {
// aborted from outside
}
}
throw e
} finally {
await fetchOperation.end()
}
}
npm install @jsenv/abort
FAQs
Help to write code compatible with abort signals
We found that @jsenv/abort demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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