mirror of https://github.com/actions/setup-python
59 lines
1.3 KiB
Markdown
59 lines
1.3 KiB
Markdown
# p-try [](https://travis-ci.org/sindresorhus/p-try)
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> Start a promise chain
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[How is it useful?](http://cryto.net/~joepie91/blog/2016/05/11/what-is-promise-try-and-why-does-it-matter/)
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## Install
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```
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$ npm install p-try
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```
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## Usage
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```js
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const pTry = require('p-try');
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(async () => {
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try {
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const value = await pTry(() => {
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return synchronousFunctionThatMightThrow();
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});
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console.log(value);
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} catch (error) {
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console.error(error);
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}
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})();
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```
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## API
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### pTry(fn, ...arguments)
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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.
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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.
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#### fn
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The function to run to start the promise chain.
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#### arguments
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Arguments to pass to `fn`.
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## Related
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- [p-finally](https://github.com/sindresorhus/p-finally) - `Promise#finally()` ponyfill - Invoked when the promise is settled regardless of outcome
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- [More…](https://github.com/sindresorhus/promise-fun)
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## License
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MIT © [Sindre Sorhus](https://sindresorhus.com)
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