locomotive-boilerplate/assets/scripts/modules/Example.js

import { module as Module } from 'modujs'
import { EAGER_FONTS } from '../app'
import { whenReady } from '../utils/fonts'

export default class extends Module {
    constructor(m) {
        super(m)
    }

    init() {
        whenReady(EAGER_FONTS).then((fonts) => this.onFontsLoaded(fonts))
    }

    onFontsLoaded(fonts) {
        console.log('Example: Eager Fonts Loaded!', fonts)
    }
}