Marc Mintel
5397309103
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60 lines
1.0 KiB
Plaintext
60 lines
1.0 KiB
Plaintext
'use strict'
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const { addAbortListener } = require('../core/util')
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const { RequestAbortedError } = require('../core/errors')
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const kListener = Symbol('kListener')
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const kSignal = Symbol('kSignal')
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function abort (self) {
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if (self.abort) {
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self.abort(self[kSignal]?.reason)
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} else {
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self.reason = self[kSignal]?.reason ?? new RequestAbortedError()
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}
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removeSignal(self)
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}
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function addSignal (self, signal) {
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self.reason = null
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self[kSignal] = null
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self[kListener] = null
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if (!signal) {
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return
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}
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if (signal.aborted) {
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abort(self)
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return
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}
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self[kSignal] = signal
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self[kListener] = () => {
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abort(self)
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}
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addAbortListener(self[kSignal], self[kListener])
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}
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function removeSignal (self) {
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if (!self[kSignal]) {
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return
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}
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if ('removeEventListener' in self[kSignal]) {
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self[kSignal].removeEventListener('abort', self[kListener])
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} else {
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self[kSignal].removeListener('abort', self[kListener])
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}
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self[kSignal] = null
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self[kListener] = null
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}
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module.exports = {
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addSignal,
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removeSignal
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}
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