122 lines
3.9 KiB
JavaScript
122 lines
3.9 KiB
JavaScript
"use strict";
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.AbortError = exports.TimeoutError = void 0;
|
|
/**
|
|
Timeout a promise after a specified amount of time.
|
|
|
|
If you pass in a cancelable promise, specifically a promise with a `.cancel()` method, that method will be called when the `pTimeout` promise times out.
|
|
|
|
@param input - Promise to decorate.
|
|
@returns A decorated `input` that times out after `milliseconds` time. It has a `.clear()` method that clears the timeout.
|
|
|
|
@example
|
|
```
|
|
import {setTimeout} from 'node:timers/promises';
|
|
import pTimeout from 'p-timeout';
|
|
|
|
const delayedPromise = () => setTimeout(200);
|
|
|
|
await pTimeout(delayedPromise(), {
|
|
milliseconds: 50,
|
|
fallback: () => {
|
|
return pTimeout(delayedPromise(), 300);
|
|
}
|
|
});
|
|
```
|
|
*/
|
|
class TimeoutError extends Error {
|
|
name;
|
|
constructor(message) {
|
|
super(message);
|
|
this.name = "TimeoutError";
|
|
}
|
|
}
|
|
exports.TimeoutError = TimeoutError;
|
|
/**
|
|
An error to be thrown when the request is aborted by AbortController.
|
|
DOMException is thrown instead of this Error when DOMException is available.
|
|
*/
|
|
class AbortError extends Error {
|
|
name;
|
|
constructor(message) {
|
|
super();
|
|
this.name = "AbortError";
|
|
this.message = message;
|
|
}
|
|
}
|
|
exports.AbortError = AbortError;
|
|
/**
|
|
TODO: Remove AbortError and just throw DOMException when targeting Node 18.
|
|
*/
|
|
const getDOMException = (errorMessage) => globalThis.DOMException === undefined
|
|
? new AbortError(errorMessage)
|
|
: new DOMException(errorMessage);
|
|
/**
|
|
TODO: Remove below function and just 'reject(signal.reason)' when targeting Node 18.
|
|
*/
|
|
const getAbortedReason = (signal) => {
|
|
const reason = signal.reason === undefined
|
|
? getDOMException("This operation was aborted.")
|
|
: signal.reason;
|
|
return reason instanceof Error ? reason : getDOMException(reason);
|
|
};
|
|
function pTimeout(promise, options) {
|
|
const { milliseconds, fallback, message, customTimers = { setTimeout, clearTimeout }, } = options;
|
|
let timer;
|
|
const cancelablePromise = new Promise((resolve, reject) => {
|
|
if (typeof milliseconds !== "number" || Math.sign(milliseconds) !== 1) {
|
|
throw new TypeError(`Expected \`milliseconds\` to be a positive number, got \`${milliseconds}\``);
|
|
}
|
|
if (milliseconds === Number.POSITIVE_INFINITY) {
|
|
resolve(promise);
|
|
return;
|
|
}
|
|
if (options.signal) {
|
|
const { signal } = options;
|
|
if (signal.aborted) {
|
|
reject(getAbortedReason(signal));
|
|
}
|
|
signal.addEventListener("abort", () => {
|
|
reject(getAbortedReason(signal));
|
|
});
|
|
}
|
|
timer = customTimers.setTimeout.call(undefined, () => {
|
|
if (fallback) {
|
|
try {
|
|
resolve(fallback());
|
|
}
|
|
catch (error) {
|
|
reject(error);
|
|
}
|
|
return;
|
|
}
|
|
const errorMessage = typeof message === "string"
|
|
? message
|
|
: `Promise timed out after ${milliseconds} milliseconds`;
|
|
const timeoutError = message instanceof Error ? message : new TimeoutError(errorMessage);
|
|
if (typeof promise?.cancel === "function") {
|
|
promise?.cancel();
|
|
}
|
|
reject(timeoutError);
|
|
}, milliseconds);
|
|
(async () => {
|
|
try {
|
|
resolve(await promise);
|
|
}
|
|
catch (error) {
|
|
reject(error);
|
|
}
|
|
finally {
|
|
customTimers.clearTimeout.call(undefined, timer);
|
|
}
|
|
})();
|
|
});
|
|
cancelablePromise.clear =
|
|
() => {
|
|
customTimers.clearTimeout.call(undefined, timer);
|
|
timer = undefined;
|
|
};
|
|
return cancelablePromise;
|
|
}
|
|
exports.default = pTimeout;
|