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79 lines
2.1 KiB
Markdown
79 lines
2.1 KiB
Markdown
# Try to Catch [![NPM version][NPMIMGURL]][NPMURL] [![Dependency Status][DependencyStatusIMGURL]][DependencyStatusURL] [![Build Status][BuildStatusIMGURL]][BuildStatusURL] [![Coverage Status][CoverageIMGURL]][CoverageURL]
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[NPMIMGURL]: https://img.shields.io/npm/v/try-to-catch.svg?style=flat&longCache=true
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[BuildStatusIMGURL]: https://img.shields.io/travis/coderaiser/try-to-catch/master.svg?style=flat&longCache=true
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[DependencyStatusIMGURL]: https://img.shields.io/david/coderaiser/try-to-catch.svg?style=flat&longCache=true
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[NPMURL]: https://npmjs.org/package/try-to-catch "npm"
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[BuildStatusURL]: https://travis-ci.org/coderaiser/try-to-catch "Build Status"
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[DependencyStatusURL]: https://david-dm.org/coderaiser/try-to-catch "Dependency Status"
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[CoverageURL]: https://coveralls.io/github/coderaiser/try-to-catch?branch=master
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[CoverageIMGURL]: https://coveralls.io/repos/coderaiser/try-to-catch/badge.svg?branch=master&service=github
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Functional `try-catch` wrapper for `promises`.
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## Install
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```
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npm i try-to-catch
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```
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## API
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### tryToCatch(fn, [...args])
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Wrap function to avoid `try-catch` block, resolves `[error, result]`;
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### Example
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Simplest example with `async-await`:
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```js
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const tryToCatch = require('try-to-catch');
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const reject = Promise.reject.bind(Promise);
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await tryToCatch(reject, 'hi');
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// returns
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[ Error: hi]
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```
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Can be used with functions:
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```js
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const tryToCatch = require('try-to-catch');
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await tryToCatch(() => 5);
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// returns
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[null, 5]
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```
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Advanced example:
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```js
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const {readFile, readdir} = require('fs').promises;
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const tryToCatch = require('try-to-catch');
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read(process.argv[2])
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.then(console.log)
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.catch(console.error);
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async function read(path) {
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const [error, data] = await tryToCatch(readFile, path, 'utf8');
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if (!error)
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return data;
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if (error.code !== 'EISDIR')
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return error;
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return await readdir(path);
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}
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```
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## Related
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- [try-catch](https://github.com/coderaiser/try-catch "try-catch") - functional try-catch wrapper.
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## License
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MIT
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