Inject Custom Store into Application - vue.js

Question

Vuex allows you to inject the store into your root instance, making it accessible via this.$store in all child components.
Without Vuex, is it possible to inject a custom store implementation into child components?
e.g.
// main.js
let app = new Vue({router, store, ...App}).$mount("#flightdeck-app")
export { app, store, router }
// SomeComponent.vue
export default {
name: "Overview",
components: { "credentials": Credentials },
computed: {
count() {
// injected store; is currently undefined.
return this.$store.state.items.length
}
},
Attempting to access this.$store results in undefined in child components, as Vuex seemingly has additional hooks to make this happen.

Answer 1

You may create a custom plugin for vue that register an initialize your custom store (or anything, I'll create a logger object just for demonstration).
For example you could have
//myLogger.js
export default {
install(Vue, options) {
function log(type, title, text) {
console.log(`[${type}] ${title} - ${text}`);
}
Vue.prototype.$log = {
error(title, text) { log('danger', title, text) },
success(title, text) { log('success', title, text) },
log
}
}
}
Before your main Vue instance tell to register your plugin
//main.js
import Logger from './path/to/myLogger';
Vue.use(Logger);
var vm = new Vue({
el: '#app',
template: '<App/>',
components: { App }
})
Now you can call this.$log on any child component
//myComponent.vue
export default {
data() {
return {};
},
methods: {
Save() {
this.$log.success('Transaction saved!');
}
}
}
Hope it helps, for more detail please see Vue plugins documentation

Answer 2

Just use in your components files:
import store from './vuex/store.js'
Place your store in separate file to get it clear.
Import store to every component where you need store.