@ionic/core/dist/collection/utils/config.js

Base components for Ionic

export function setupConfig(config) {
    const win = window;
    const Ionic = win.Ionic;
    if (Ionic && Ionic.config && Ionic.config.constructor.name !== 'Object') {
        console.error('ionic config was already initialized');
        return;
    }
    win.Ionic = win.Ionic || {};
    win.Ionic.config = Object.assign({}, win.Ionic.config, config);
    return win.Ionic.config;
}