fuse-angular/src/environments/environment.ts

// The file contents for the current environment will overwrite these during build.
// The build system defaults to the dev environment which uses `environment.ts`, but if you do
// `ng build --env=prod` then `environment.prod.ts` will be used instead.
// The list of which env maps to which file can be found in `.angular-cli.json`.

export const environment = {
    production: false,
    firebase  : {
        apiKey     : 'AIzaSyDYFfhaC5QaKPgPhh8YqohjhfUpcYlg33c',
        // authDomain       : '<your-project-authdomain>',
        databaseURL: 'https://fuse2-demo.firebaseio.com/',
        projectId  : 'fuse2-demo'
        // storageBucket    : '<your-storage-bucket>',
        // messagingSenderId: '<your-messaging-sender-id>'
    }
};