Import vue package in laravel - vue.js

Question

What is the corect way to import vue packages in laravel 5.6? It comes with vue and bootstrap preinstall. I see they are all compile in app.js from public directory but I can figure out how to import https://github.com/moreta/vue-search-select and use it. After I tried to import it on my own:
Error:
ncaught TypeError: Vue.component is not a function
At line:
Vue.component('search-user', __webpack_require__(42));
Until now I tried this:
assets/js/bootstrap.js:
import { BasicSelect } from 'vue-search-select';
window.BasicSelect = BasicSelect;
assets/js/app.js:
require('./bootstrap');
window.Vue = require('vue');
window.Vue = require('vue-search-select');
Vue.component('search-user', require('./components/SearchUser.vue'));
var app = new Vue({
el: '#app'
})
components
<template>
<basic-select :options="options"
:selected-option="item"
placeholder="select item"
#select="onSelect">
</basic-select>
</template>
<script>
export default {
data() {
return {
keywords: null,
options: []
};
},
watch: {
keywords(after, before) {
if (this.keywords.length > 0)
this.fetch();
}
},
methods: {
fetch() {
axios.get('/api/search', {params: {keywords: this.keywords}})
.then(response => this.options = response.data)
.catch(error => {
});
},
onSelect (item) {
this.item = item
},
reset () {
this.item = {}
},
selectOption () {
// select option from parent component
this.item = this.options[0]
},
components: {
BasicSelect
}
}
}
</script>
I ran: npm install and npm run watch:
"devDependencies": {
"ajv": "^6.0.0",
"bootstrap": "^4.0.0",
"cross-env": "^5.1",
"laravel-mix": "^2.0",
"lodash": "^4.17.4",
"popper.js": "^1.12",
"uikit": "^3.0.0-beta.35",
"vue": "^2.5.7",
"vue-search-select": "^2.5.0"
},
"dependencies": {
"axios": "^0.17.1",
"jquery": "^3.3.1"
}

Answer 1

I think that the simple will do
window.Vue = require('vue');
require('vue-search-select');
Then in your components you can import what you need on top:
import { BasicSelect } from 'vue-search-select';
export default {
data() {
return {
keywords: null,
options: [],
item: null
};
},
...

Answer 2

One missing detail that tricked me with this one, you need to register the components like this, otherwise it won't be found:
components: {
ModelSelect,
BasicSelect
},