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delay-5.0.0
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مشاهده بیشترتوضیحات
Delay a promise a specified amount of time
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | delay-5.0.0 |
| نام | delay |
| نسخه کتابخانه | 5.0.0 |
| نگهدارنده | ['sindresorhus'] |
| ایمیل نگهدارنده | ['sindresorhus@gmail.com'] |
| نویسنده | Sindre Sorhus |
| ایمیل نویسنده | sindresorhus@gmail.com |
| آدرس صفحه اصلی | git+https://github.com/sindresorhus/delay.git |
| آدرس اینترنتی | https://github.com/sindresorhus/delay#readme |
| مجوز | MIT |
# delay
> Delay a promise a specified amount of time
*If you target [Node.js 15](https://medium.com/@nodejs/node-js-v15-0-0-is-here-deb00750f278) or later, you can do `await require('timers/promises').setTimeout(1000)` instead.*
## Install
```
$ npm install delay
```
## Usage
```js
const delay = require('delay');
(async () => {
bar();
await delay(100);
// Executed 100 milliseconds later
baz();
})();
```
## API
### delay(milliseconds, options?)
Create a promise which resolves after the specified `milliseconds`.
### delay.reject(milliseconds, options?)
Create a promise which rejects after the specified `milliseconds`.
### delay.range(minimum, maximum, options?)
Create a promise which resolves after a random amount of milliseconds between `minimum` and `maximum` has passed.
Useful for tests and web scraping since they can have unpredictable performance. For example, if you have a test that asserts a method should not take longer than a certain amount of time, and then run it on a CI, it could take longer. So with `.range()`, you could give it a threshold instead.
#### milliseconds
#### mininum
#### maximum
Type: `number`
Milliseconds to delay the promise.
#### options
Type: `object`
##### value
Type: `unknown`
Optional value to resolve or reject in the returned promise.
##### signal
Type: [`AbortSignal`](https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal)
The returned promise will be rejected with an AbortError if the signal is aborted. AbortSignal is available in all modern browsers and there is a [ponyfill for Node.js](https://github.com/mysticatea/abort-controller).
### delayPromise.clear()
Clears the delay and settles the promise.
### delay.createWithTimers({clearTimeout, setTimeout})
Creates a new `delay` instance using the provided functions for clearing and setting timeouts. Useful if you're about to stub timers globally, but you still want to use `delay` to manage your tests.
## Advanced usage
Passing a value:
```js
const delay = require('delay');
(async() => {
const result = await delay(100, {value: '🦄'});
// Executed after 100 milliseconds
console.log(result);
//=> '🦄'
})();
```
Using `delay.reject()`, which optionally accepts a value and rejects it `ms` later:
```js
const delay = require('delay');
(async () => {
try {
await delay.reject(100, {value: new Error('🦄')});
console.log('This is never executed');
} catch (error) {
// 100 milliseconds later
console.log(error);
//=> [Error: 🦄]
}
})();
```
You can settle the delay early by calling `.clear()`:
```js
const delay = require('delay');
(async () => {
const delayedPromise = delay(1000, {value: 'Done'});
setTimeout(() => {
delayedPromise.clear();
}, 500);
// 500 milliseconds later
console.log(await delayedPromise);
//=> 'Done'
})();
```
You can abort the delay with an AbortSignal:
```js
const delay = require('delay');
(async () => {
const abortController = new AbortController();
setTimeout(() => {
abortController.abort();
}, 500);
try {
await delay(1000, {signal: abortController.signal});
} catch (error) {
// 500 milliseconds later
console.log(error.name)
//=> 'AbortError'
}
})();
```
Create a new instance that is unaffected by libraries such as [lolex](https://github.com/sinonjs/lolex/):
```js
const delay = require('delay');
const customDelay = delay.createWithTimers({clearTimeout, setTimeout});
(async() => {
const result = await customDelay(100, {value: '🦄'});
// Executed after 100 milliseconds
console.log(result);
//=> '🦄'
})();
```
## Related
- [delay-cli](https://github.com/sindresorhus/delay-cli) - CLI for this module
- [p-cancelable](https://github.com/sindresorhus/p-cancelable) - Create a promise that can be canceled
- [p-min-delay](https://github.com/sindresorhus/p-min-delay) - Delay a promise a minimum amount of time
- [p-immediate](https://github.com/sindresorhus/p-immediate) - Returns a promise resolved in the next event loop - think `setImmediate()`
- [p-timeout](https://github.com/sindresorhus/p-timeout) - Timeout a promise after a specified amount of time
- [More…](https://github.com/sindresorhus/promise-fun)
زبان مورد نیاز
| مقدار | نام |
|---|---|
| 14.15.1 | Npm |
نحوه نصب
نصب پکیج tgz delay-5.0.0:
npm install delay-5.0.0.tgz