https://github.com/gunar/go-for-it

Error-handling à la golang.
https://github.com/gunar/go-for-it

Last synced: 6 days ago
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Error-handling à la golang.

• Host: GitHub
• URL: https://github.com/gunar/go-for-it
• Owner: gunar
• Created: 2017-10-12T21:05:02.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2017-10-15T17:26:30.000Z (about 7 years ago)
• Last Synced: 2024-10-04T21:37:11.260Z (about 1 month ago)
• Language: JavaScript
• Homepage: https://medium.com/@gunar/async-control-flow-without-exceptions-nor-monads-b19af2acc553
• Size: 31.3 KB
• Stars: 16
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# go-for-it

[![CircleCI](https://circleci.com/gh/gunar/go-for-it.svg?style=svg)](https://circleci.com/gh/gunar/go-for-it)

Error handling à la golang.

Read the blog post:

> [Async Control Flow without Exceptions nor Monads](https://medium.com/@gunar/async-control-flow-without-exceptions-nor-monads-b19af2acc553)

## Installation

```

npm install go-for-it

```

## Example

```js

const go = require('go-for-it')

const toUpper = async string => {

  if (string === 'invalid') throw Error('Invalid input')

  return string.toUpperCase()

}

const errorHandler = () => { console.log('There has been an error. I\'ll handle it.') }

const print = console.log

const foo = async input => {

  const [err, value] = await go(toUpper(input))

  if (err) return errorHandler(err)

  print(value)

}

// Works normally.

foo('gunar')

// "GUNAR"

// Business Logic Error gets handled by errorHandler().

foo('invalid')

// "There has been an error. I'll handle it."

// Runtime Exceptions DO NOT get handled by errorHandler(),

foo(555555).catch(e => {

  // but can be caught.

  console.log(e)

  // TypeError: string.toUpperCase is not a function

})

```

## License

MIT [http://gunar.mit-license.org]()