1
|
# p-try [![Build Status](https://travis-ci.org/sindresorhus/p-try.svg?branch=master)](https://travis-ci.org/sindresorhus/p-try)
|
2
|
|
3
|
> Start a promise chain
|
4
|
|
5
|
[How is it useful?](http://cryto.net/~joepie91/blog/2016/05/11/what-is-promise-try-and-why-does-it-matter/)
|
6
|
|
7
|
|
8
|
## Install
|
9
|
|
10
|
```
|
11
|
$ npm install p-try
|
12
|
```
|
13
|
|
14
|
|
15
|
## Usage
|
16
|
|
17
|
```js
|
18
|
const pTry = require('p-try');
|
19
|
|
20
|
(async () => {
|
21
|
try {
|
22
|
const value = await pTry(() => {
|
23
|
return synchronousFunctionThatMightThrow();
|
24
|
});
|
25
|
console.log(value);
|
26
|
} catch (error) {
|
27
|
console.error(error);
|
28
|
}
|
29
|
})();
|
30
|
```
|
31
|
|
32
|
|
33
|
## API
|
34
|
|
35
|
### pTry(fn, ...arguments)
|
36
|
|
37
|
Returns a `Promise` resolved with the value of calling `fn(...arguments)`. If the function throws an error, the returned `Promise` will be rejected with that error.
|
38
|
|
39
|
Support for passing arguments on to the `fn` is provided in order to be able to avoid creating unnecessary closures. You probably don't need this optimization unless you're pushing a *lot* of functions.
|
40
|
|
41
|
#### fn
|
42
|
|
43
|
The function to run to start the promise chain.
|
44
|
|
45
|
#### arguments
|
46
|
|
47
|
Arguments to pass to `fn`.
|
48
|
|
49
|
|
50
|
## Related
|
51
|
|
52
|
- [p-finally](https://github.com/sindresorhus/p-finally) - `Promise#finally()` ponyfill - Invoked when the promise is settled regardless of outcome
|
53
|
- [More…](https://github.com/sindresorhus/promise-fun)
|
54
|
|
55
|
|
56
|
## License
|
57
|
|
58
|
MIT © [Sindre Sorhus](https://sindresorhus.com)
|