What are the best practices for using Vuex with TypeScript?

What are the best practices for using Vuex with TypeScript?

When using Vuex with TypeScript, it's important to define your state, getters, mutations, and actions with proper types. This ensures type safety and better code maintainability.

Can you give me an example of how to define a Vuex store with TypeScript?

Sure! Here's a simple example:

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

interface State {
  count: number;
}

const store = new Vuex.Store<State>({
  state: {
    count: 0,
  },
  mutations: {
    increment(state) {
      state.count++;
    },
  },
});

This defines a Vuex store with a state that has a count property.

What about using modules in Vuex with TypeScript?

Using modules is a great way to organize your store. You can define each module with its own state, mutations, and actions, and then combine them in the main store. Here's an example:

const moduleA = {
  state: { count: 0 },
  mutations: {
    increment(state) {
      state.count++;
    },
  },
};

const store = new Vuex.Store({
  modules: {
    a: moduleA,
  },
});

Any tips for testing Vuex stores written in TypeScript?

Yes! You can use Jest or Mocha for testing. Make sure to mock your store and test your mutations and actions separately to ensure they behave as expected.