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GitHub - bitchcraft/keyconst: Create a keymirrored object from an array of string keys

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Create an object where values are identical to its key names. Inspired by keymirror and Facebook’s react/lib/keyMirror, keyconst reduces the amount of code to create new key constants in objects.

Instead of

const Actions = keymirror({ BUY_ICECREAM: null })

you can now simplify this to

const Actions = keyconst([ 'BUY_ICECREAM' ])

Installation

$ yarn add @bitchcraft/keyconst
$ npm install -P @bitchcraft/keyconst

Usage

ES6 example

import keyconst from '@bitchcraft/keyconst';

const Events = keyconst([
    'AUTH_SUCCESS',
    'AUTH_FAILURE',
    'AUTH_LOADING',
]);

function reducer(state = Map(), event) {
    const { payload, type } = event;

    switch (type){
        case Events.AUTH_LOADING:
            return state.set('loading', true);

        case Events.AUTH_SUCCESS:
            return state.set('loading', false)
                .set('user', payload.user);

        case Events.AUTH_FAILURE:
            return state.set('loading', false)
                .set('error', payload.error)
                .delete('user');
    }
    return state;
}

ES5 example

var keyconst = require('@bitchcraft/keyconst');

var Events = keyconst([
    'AUTH_SUCCESS',
    'AUTH_FAILURE',
    'AUTH_LOADING',
]);

function reducer(state, event) {
    if (typeof state !== 'object') state = {};
    var payload = event.payload;
    var type = event.type;

    switch (type){
        case Events.AUTH_LOADING:
            state.loading = true;
            break;

        case Events.AUTH_SUCCESS:
            state.loading = false;
            state.user = payload.user;
            break;

        case Events.AUTH_FAILURE:
            state.loading = false;
            state.error = payload.error;
            delete state.loading;
            break;
    }
    return state;
}

ES2015+ import with flow types

// babel: env, stage-0, flow
import keyconst from '@bitchcraft/keyconst/src/keyconst';

Bundle size

Gzipped size is around 1KB. You can check out the bundle analytics for the non-minified bundle.

Help and feedback

Please file issues in Github

Contribute

We are open for PRs. Please respect to the linting rules.

License

Keyconst is free software und the BSD-3-Clause (see LICENSE.md).

Contributors