# vuex-module-decorators [![Usage Guide](https://img.shields.io/badge/usage-guide-1e90ff.svg?style=for-the-badge&longCache=true)](https://championswimmer.in/vuex-module-decorators/) Detailed Guide: https://championswimmer.in/vuex-module-decorators/ Typescript/ES7 Decorators to make Vuex modules a breeze [![Build Status](https://travis-ci.org/championswimmer/vuex-module-decorators.svg?branch=master)](https://travis-ci.org/championswimmer/vuex-module-decorators) [![npm:size:gzip](https://img.shields.io/bundlephobia/minzip/vuex-module-decorators.svg?label=npm:size:gzip)](https://bundlephobia.com/result?p=vuex-module-decorators) [![cdn:min:gzip](https://img.badgesize.io/https://cdn.jsdelivr.net/npm/vuex-module-decorators.svg?label=cdn:min:gzip&compression=gzip)](https://cdn.jsdelivr.net/npm/vuex-module-decorators/dist/cjs/index.min.js) [![codecov](https://codecov.io/gh/championswimmer/vuex-module-decorators/branch/master/graph/badge.svg)](https://codecov.io/gh/championswimmer/vuex-module-decorators) [![npm](https://img.shields.io/npm/v/vuex-module-decorators.svg)](https://www.npmjs.com/package/vuex-module-decorators) [![npm](https://img.shields.io/npm/dw/vuex-module-decorators.svg?colorB=ff0033)](https://www.npmjs.com/package/vuex-module-decorators) ![npm type definitions](https://img.shields.io/npm/types/vuex-module-decorators.svg) [![Maintainability](https://api.codeclimate.com/v1/badges/5b1dfa8d3d4bdf409b60/maintainability)](https://codeclimate.com/github/championswimmer/vuex-module-decorators/maintainability) [![Codacy Badge](https://api.codacy.com/project/badge/Grade/b7944c579d5c4c1d949f71a91a538d77)](https://www.codacy.com/app/championswimmer/vuex-module-decorators?utm_source=github.com&utm_medium=referral&utm_content=championswimmer/vuex-module-decorators&utm_campaign=Badge_Grade) [![codebeat badge](https://codebeat.co/badges/0272746c-8a7d-428b-a20d-387d22bfbcfb)](https://codebeat.co/projects/github-com-championswimmer-vuex-module-decorators-master) [![Total alerts](https://img.shields.io/lgtm/alerts/g/championswimmer/vuex-module-decorators.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/championswimmer/vuex-module-decorators/alerts/) [![Language grade: JavaScript](https://img.shields.io/lgtm/grade/javascript/g/championswimmer/vuex-module-decorators.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/championswimmer/vuex-module-decorators/context:javascript) ## Patrons While I have a day job and I really maintain open source libraries for fun, any sponsors are extremely graciously thanked for their contributions, and goes a long way 😇 ❤️ - [Thomas Woo](https://www.patreon.com/user/creators?u=37365136) ## CHANGELOG - There are major type-checking changes (could be breaking) in v0.9.7 - There are major usage improvements (non backwards compatible) in 0.8.0 Please check [CHANGELOG](CHANGELOG.md) ## Examples Read the rest of the README to figure out how to use, or if you readily want to jump into a production codebase and see how this is used, you can check out - - - - ## Installation ```shell npm install -D vuex-module-decorators ``` ### Babel 6/7 > **NOTE** This is **not** necessary for `vue-cli@3` projects, since `@vue/babel-preset-app` already includes this plugin 1. You need to install `babel-plugin-transform-decorators` ### TypeScript 1. set `experimentalDecorators` to true 2. For reduced code with decorators, set `importHelpers: true` in `tsconfig.json` 3. _(only for TypeScript 2)_ set `emitHelpers: true` in `tsconfig.json` ## Configuration ### Using with `target: es5` > **NOTE** Since version `0.9.3` we distribute as ES5, so this section is applicable only to v0.9.2 and below This package generates code in `es2015` format. If your Vue project targets ES6 or ES2015 then you need not do anything. But in case your project uses `es5` target (to support old browsers), then you need to tell Vue CLI / Babel to transpile this package. ```js // in your vue.config.js module.exports = { /* ... other settings */ transpileDependencies: ['vuex-module-decorators'] } ``` ## Usage #### The ~~conventional~~ old & boring way Remember how vuex modules used to be made ? ```js const moduleA = { state: { ... }, mutations: { ... }, actions: { ... }, getters: { ... } } const moduleB = { state: { ... }, mutations: { ... }, actions: { ... } } const store = new Vuex.Store({ modules: { a: moduleA, b: moduleB } }) ``` #### Hello Decorators ! Well not anymore. Now you get better syntax. Inspired by `vue-class-component` ```typescript import { Module, VuexModule, Mutation, Action } from 'vuex-module-decorators' @Module export default class Counter2 extends VuexModule { count = 0 @Mutation increment(delta: number) { this.count += delta } @Mutation decrement(delta: number) { this.count -= delta } // action 'incr' commits mutation 'increment' when done with return value as payload @Action({ commit: 'increment' }) incr() { return 5 } // action 'decr' commits mutation 'decrement' when done with return value as payload @Action({ commit: 'decrement' }) decr() { return 5 } } ``` #### async MutationAction === magic Want to see something even better ? ```typescript import { Module, VuexModule, MutationAction } from 'vuex-module-decorators' import { ConferencesEntity, EventsEntity } from '@/models/definitions' @Module export default class HGAPIModule extends VuexModule { conferences: Array = [] events: Array = [] // 'events' and 'conferences' are replaced by returned object // whose shape must be `{events: [...], conferences: [...] }` @MutationAction({ mutate: ['events', 'conferences'] }) async fetchAll() { const response: Response = await getJSON('https://hasgeek.github.io/events/api/events.json') return response } } ``` #### Automatic getter detection ```typescript @Module class MyModule extends VuexModule { wheels = 2 @Mutation incrWheels(extra) { this.wheels += extra } get axles() { return this.wheels / 2 } } ``` this is turned into the equivalent ```javascript const module = { state: { wheels: 2 }, mutations: { incrWheels(state, extra) { state.wheels += extra } }, getters: { axles: (state) => state.wheels / 2 } } ``` ### Putting into the store Use the modules just like you would earlier ```typescript import Vue from 'nativescript-vue' import Vuex, { Module } from 'vuex' import counter from './modules/Counter2' import hgapi from './modules/HGAPIModule' Vue.use(Vuex) const store = new Vuex.Store({ state: {}, modules: { counter, hgapi } }) ``` ### Module re-use, use with NuxtJS If you need to support [module reuse](https://vuex.vuejs.org/guide/modules.html#module-reuse) or to use modules with NuxtJS, you can have a state factory function generated instead of a static state object instance by using `stateFactory` option to `@Module`, like so: ```typescript @Module({ stateFactory: true }) class MyModule extends VuexModule { wheels = 2 @Mutation incrWheels(extra) { this.wheels += extra } get axles() { return this.wheels / 2 } } ``` this is turned into the equivalent ```javascript const module = { state() { return { wheels: 2 } }, mutations: { incrWheels(state, extra) { state.wheels += extra } }, getters: { axles: (state) => state.wheels / 2 } } ``` ### Dynamic Modules Vuex allows us to register modules into store at runtime after store is constructed. We can do the following to create dynamic modules ```typescript interface StoreType { mm: MyModule } // Declare empty store first const store = new Vuex.Store({}) // Create module later in your code (it will register itself automatically) // In the decorator we pass the store object into which module is injected // NOTE: When you set dynamic true, make sure you give module a name @Module({ dynamic: true, store: store, name: 'mm' }) class MyModule extends VuexModule { count = 0 @Mutation incrCount(delta) { this.count += delta } } ``` If you would like to preserve the state e.g when loading in the state from [vuex-persist](https://www.npmjs.com/package/vuex-persist) ```diff ... -- @Module({ dynamic: true, store: store, name: 'mm' }) ++ @Module({ dynamic: true, store: store, name: 'mm', preserveState: true }) class MyModule extends VuexModule { ... ``` Or when it doesn't have a initial state and you load the state from the localStorage ```diff ... -- @Module({ dynamic: true, store: store, name: 'mm' }) ++ @Module({ dynamic: true, store: store, name: 'mm', preserveState: localStorage.getItem('vuex') !== null }) class MyModule extends VuexModule { ... ``` ### Accessing modules with NuxtJS There are many possible ways to construct your modules. Here is one way for drop-in use with NuxtJS (you simply need to add your modules to `~/utils/store-accessor.ts` and then just import the modules from `~/store`): `~/store/index.ts`: ```typescript import { Store } from 'vuex' import { initialiseStores } from '~/utils/store-accessor' const initializer = (store: Store) => initialiseStores(store) export const plugins = [initializer] export * from '~/utils/store-accessor' ``` `~/utils/store-accessor.ts`: ```typescript import { Store } from 'vuex' import { getModule } from 'vuex-module-decorators' import example from '~/store/example' let exampleStore: example function initialiseStores(store: Store): void { exampleStore = getModule(example, store) } export { initialiseStores, exampleStore } ``` Now you can access stores in a type-safe way by doing the following from a component or page - no extra initialization required. ```typescript import { exampleStore } from '~/store' ... someMethod() { return exampleStore.exampleGetter } ``` ### Using the decorators with ServerSideRender When SSR is involved the store is recreated on each request. Every time the module is accessed using `getModule` function the current store instance must be provided and the module must be manually registered to the root store modules #### Example ```typescript // store/modules/MyStoreModule.ts import { Module, VuexModule, Mutation } from 'vuex-module-decorators' @Module({ name: 'modules/MyStoreModule', namespaced: true, stateFactory: true, }) export default class MyStoreModule extends VuexModule { public test: string = 'initial' @Mutation public setTest(val: string) { this.test = val } } // store/index.ts import Vuex from 'vuex' import MyStoreModule from '~/store/modules/MyStoreModule' export function createStore() { return new Vuex.Store({ modules: { MyStoreModule, } }) } // components/Random.tsx import { Component, Vue } from 'vue-property-decorator'; import { getModule } from 'vuex-module-decorators'; import MyStoreModule from '~/store/modules/MyStoreModule' @Component export default class extends Vue { public created() { const MyModuleInstance = getModule(MyStoreModule, this.$store); // Do stuff with module MyModuleInstance.setTest('random') } } ``` ## Configuration There is a global configuration object that can be used to set options across the whole module: ```typescript import { config } from 'vuex-module-decorators' // Set rawError to true by default on all @Action decorators config.rawError = true ```

	Stars	Issues	Version	Updated	Created
vuex-class-component	219	47	2.3.6	2 years ago	5 years ago
vuex-class-module			0.0.16	5 years ago	7 years ago
vuex-class-modules	193	29	1.3.0	3 years ago	5 years ago
vuex-module-decorators	1,801	143	2.0.0	2 years ago	6 years ago

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