add-abort-signal.js•1.77 kB
'use strict'
const { SymbolDispose } = require('../../ours/primordials')
const { AbortError, codes } = require('../../ours/errors')
const { isNodeStream, isWebStream, kControllerErrorFunction } = require('./utils')
const eos = require('./end-of-stream')
const { ERR_INVALID_ARG_TYPE } = codes
let addAbortListener
// This method is inlined here for readable-stream
// It also does not allow for signal to not exist on the stream
// https://github.com/nodejs/node/pull/36061#discussion_r533718029
const validateAbortSignal = (signal, name) => {
if (typeof signal !== 'object' || !('aborted' in signal)) {
throw new ERR_INVALID_ARG_TYPE(name, 'AbortSignal', signal)
}
}
module.exports.addAbortSignal = function addAbortSignal(signal, stream) {
validateAbortSignal(signal, 'signal')
if (!isNodeStream(stream) && !isWebStream(stream)) {
throw new ERR_INVALID_ARG_TYPE('stream', ['ReadableStream', 'WritableStream', 'Stream'], stream)
}
return module.exports.addAbortSignalNoValidate(signal, stream)
}
module.exports.addAbortSignalNoValidate = function (signal, stream) {
if (typeof signal !== 'object' || !('aborted' in signal)) {
return stream
}
const onAbort = isNodeStream(stream)
? () => {
stream.destroy(
new AbortError(undefined, {
cause: signal.reason
})
)
}
: () => {
stream[kControllerErrorFunction](
new AbortError(undefined, {
cause: signal.reason
})
)
}
if (signal.aborted) {
onAbort()
} else {
addAbortListener = addAbortListener || require('../../ours/util').addAbortListener
const disposable = addAbortListener(signal, onAbort)
eos(stream, disposable[SymbolDispose])
}
return stream
}