https://github.com/ruanyl/reducer-tools

https://github.com/ruanyl/reducer-tools

Last synced: 18 days ago
JSON representation

• Host: GitHub
• URL: https://github.com/ruanyl/reducer-tools
• Owner: ruanyl
• License: mit
• Created: 2018-05-01T12:29:24.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2023-01-04T03:21:45.000Z (about 2 years ago)
• Last Synced: 2024-12-05T16:18:51.478Z (about 1 month ago)
• Language: TypeScript
• Size: 725 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 9
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
## reducer tools ![travis](https://travis-ci.org/ruanyl/reducer-tools.svg?branch=master)

Create reducer easily

#### Usage

```typescript

import { createReducer } from 'reducer-tools'

const initialState = { total: 0 }

const increase = s => ({ ...s, total: s.total + 1 })

const decrease = s => ({ ...s, total: s.total - 1 })

const reducer = createReducer(initialState, {

  'increase': increase,

  'decrease': decrease,

})

const a1 = { type: 'increase' }

const s1 = reducer(initialState, a1)

expect(s1.total).toBe(1)

```

#### Use reducer helps

```typescript

import { createReducer, payloadReducer } from 'reducer-tools'

const add = value => state => ({ ...state, total: state.total + value })

const subtract = value => state => ({ ...state, total: state.total - value })

const reducer = createReducer(initialState, {

  'add': payloadReducer(add),

  'subtract': payloadReducer(subtract),

})

const a1 = { type: 'add', payload: 10 }

const s1 = reducer(initialState, a1)

expect(s1.total).toBe(10)

```