Package Exports

rereducer

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (rereducer) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

rereducer

Create declarative redux reducers without boilerplate.

Basic example:

import rereducer from 'rereducer';
const INITIAL_COUNTER_STATE = 0;

const counter = rereducer(
  INITIAL_COUNTER_STATE,
  ['INCREASE', x => x + 1],
  ['DECREASE', x => x - 1]
);

counter();
// => 0
counter(5, { type: 'INCREASE' });
// => 6

What if you want the same transformation for more than one action type?

import rereducer from 'rereducer';
const INITIAL_COUNTER_STATE = 0;

const counter = rereducer(
  INITIAL_COUNTER_STATE,
  ['INCREASE', x => x + 1],
  ['DECREASE', x => x - 1],
  [['RESET', 'LOGOUT'], () => INITIAL_COUNTER_STATE]
);

counter(100, { type: 'RESET' });
// => 0
counter(100, { type: 'LOGOUT' });
// => 0

What if you need a more complex condition for a transformation?

import rereducer from 'rereducer';
const INITIAL_COUNTER_STATE = 0;

const whenSomethingSpeciallHappens = (state, action) => (
  action.type === 'SOMETHING_SPECIAL' &&
  action.payload === 'SPECIAL_INDEED' &&
  state > 10
);

const counter = rereducer(
  INITIAL_COUNTER_STATE,
  ['INCREASE', x => x + 1],
  ['DECREASE', x => x - 1],
  [whenSomethingSpeciallHappens, x => x + 1000]
);

counter(11, { type: 'SOMETHING_SPECIAL', payload: 'SPECIAL_INDEED' });
// => 1011
counter(10, { type: 'SOMETHING_SPECIAL', payload: 'SPECIAL_INDEED' });
// => 10
counter(11, { type: 'SOMETHING_SPECIAL' });
// => 11

Credits to:

@winkerVSbecks: For sharing good ideas and feedback about the API