keanu-weblite/src/services/config.service.js

export default {
    install(Vue, defaultServerFromLocation, onloaded) {
        var config = Vue.observable(require('@/assets/config.json'));
        const getRuntimeConfig = () => {
            return fetch('./config.json?ms=' + Date.now()).then((res) => res.json()).catch(err => {
                console.error("Failed to get config:", err);
                return {};
            });
        }

        config.promise = getRuntimeConfig().then((json) => {
            // Reactively use all the config values
            for (const key of Object.keys(json)) {
                Vue.set(config, key, json[key]);
            }
            // If default server is not set, default to current server address
            if (!json.defaultServer) {
                Vue.set(config, "defaultServer", defaultServerFromLocation);
            }

            // Tell callback we are done loading runtime config
            if (onloaded) {
                onloaded(config);
            }
            return config;
        });
        Vue.prototype.$config = config;
    }
}