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delay.ts
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delay.ts
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import {
Hol,
HolFilter,
HolRequest,
HolResponse,
} from './model'
export function delay(millis: number): HolFilter {
return function DelayFilter(request: HolRequest, execute: Hol): Promise<HolResponse> {
return new Promise((fulfill, reject) => {
const timer = setTimeout(() => {
execute(request).then(fulfill, reject)
}, millis)
const signal = request.init?.signal
if (signal) {
if (signal.aborted) {
clearTimeout(timer)
try {
signal.throwIfAborted()
} catch (e) {
reject(e)
}
} else {
signal.addEventListener('abort', () => {
clearTimeout(timer)
try {
signal.throwIfAborted()
} catch (e) {
reject(e)
}
})
}
}
})
}
}