https://github.com/d8corp/condition-handler

The handler of conditions
https://github.com/d8corp/condition-handler

Last synced: about 1 year ago
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The handler of conditions

• Host: GitHub
• URL: https://github.com/d8corp/condition-handler
• Owner: d8corp
• License: mit
• Created: 2020-08-10T08:13:24.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2020-08-10T22:27:45.000Z (almost 6 years ago)
• Last Synced: 2025-03-30T21:01:49.408Z (over 1 year ago)
• Language: TypeScript
• Size: 56.6 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# condition-handler

[![NPM](https://img.shields.io/npm/v/condition-handler.svg)](https://www.npmjs.com/package/condition-handler)

[![minzipped size](https://img.shields.io/bundlephobia/minzip/condition-handler)](https://github.com/d8corp/condition-handler/blob/master/lib/conditionHandler.min.js)

[![downloads](https://img.shields.io/npm/dm/condition-handler.svg)](https://www.npmjs.com/package/condition-handler)

[![license](https://img.shields.io/npm/l/condition-handler)](https://github.com/d8corp/condition-handler/blob/master/LICENSE)  

The handler of conditions.

## Installation

```bash

npm i condition-handler

# or

yarn add condition-handler

```

Or you can use [minified file](https://github.com/d8corp/condition-handler/blob/master/lib/conditionHandler.min.js).

```html

  

    

  

  

    

      console.log(conditionHandler('!', true))

    

  

```

## Using

You can use any operators from the list  

`!` `&&` `||` `===` `==` `!==` `!=` `>` `>=` `<` `<=` `(` `)`  

It works the same as `if` operator from JavaScript.

```typescript

conditionHandler([1]) // 1 === 1

conditionHandler([1, '&&', 2]) // 1 && 2 === 2

conditionHandler([1, '&&', 0]) // 1 && 0 === 0

conditionHandler([1, '||', 0]) // 1 || 0 === 1

conditionHandler(['!', 1, '||', 0]) // !1 || 0 === 0

conditionHandler([1, '>', 2]) // 1 > 2 === false

conditionHandler([2, '>=', 1]) // 2 >= 1 === true

```

You can use a plugin to handle non-operator argument.

```typescript

const obj = {

  test1: true,

  test2: false,

  test: {

    field1: 1,

    field2: 0

  }

}

function plugin (condition) {

  if (typeof condition === 'string') {

    const fields = condition.split('.')

    condition = obj

    for (let i = 0; i < fields.length; i++) {

      condition = condition[fields[i]]

    }

  }

  return condition

}

conditionHandler(['test1', '&&', 'test.field2'], plugin)

// obj.test1 && obj.test.field2 === 0

```

## Issues

If you find a bug, please file an issue on [GitHub](https://github.com/d8corp/condition-handler/issues)  

[![issues](https://img.shields.io/github/issues-raw/d8corp/condition-handler)](https://github.com/d8corp/condition-handler/issues)  

 

[![stars](https://img.shields.io/github/stars/d8corp/condition-handler?style=social)](https://github.com/d8corp/condition-handler)

[![watchers](https://img.shields.io/github/watchers/d8corp/condition-handler?style=social)](https://github.com/d8corp/condition-handler)