reducer-tools
v1.0.0
Published
redux reducer utilities
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reducer tools
Create reducer easily
Usage
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
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)