free-regular-svg-icons of vue-fontawesome not working - vue.js

Question

I am using Webpack + Vue + vue-fontawesome.
The code below works fine and display icons.
import #fortawesome/free-solid-svg-icons
But this one doesn't display icons.
import faCalendarCheck component in #fortawesome/free-regular-svg-icons
Similary, other components in #fortawesome/free-regular-svg-icons are not working.
Component do render comment line of HTML <\!---->.
Why #fortawesome/free-regular-svg-icons is not working?
main.js
// Font Awesome
import { library } from '#fortawesome/fontawesome-svg-core';
import {
faThLarge,
// faCalendarCheck,
faBell,
faAddressBook,
faCalculator,
faSitemap,
faEnvelope,
faWindowMaximize,
faFileAlt,
faNewspaper,
} from '#fortawesome/free-solid-svg-icons';
import {
faCalendarCheck,
} from '#fortawesome/free-regular-svg-icons';
library.add(faThLarge);
library.add(faCalendarCheck);
library.add(faBell);
library.add(faAddressBook);
library.add(faCalculator);
library.add(faSitemap);
library.add(faEnvelope);
library.add(faWindowMaximize);
library.add(faFileAlt);
library.add(faNewspaper);
import { FontAwesomeIcon } from '#fortawesome/vue-fontawesome';
Vue.component('font-awesome-icon', FontAwesomeIcon);
app.vue
<template>
<font-awesome-icon icon="calendar-check" />
</template>
package.json
"dependencies": {
"#fortawesome/fontawesome-svg-core": "^1.2.2",
"#fortawesome/free-brands-svg-icons": "^5.2.0",
"#fortawesome/free-regular-svg-icons": "^5.2.0",
"#fortawesome/free-solid-svg-icons": "^5.2.0",
"#fortawesome/vue-fontawesome": "^0.1.1"
}

Answer 1

You need to specify a prefix for using non solid icons.
In your example this should work:
<font-awesome-icon :icon="['far', 'calendar-check']" />
More info can be found here.

Answer 2

One more tip - Instead of writing this:
library.add(faThLarge);
library.add(faCalendarCheck);
library.add(faBell);
etc...
you can simplify it to:
library.add(faThLarge, faCalendarCheck, faBell);