$app/environment

import { import browser
referencebrowser, import building
referencebuilding, import dev
referencedev, import version
referenceversion } from '$app/environment';

browser

true if the app is running in the browser.

const browser: boolean;

building

SvelteKit analyses your app during the build step by running it. During this process, building is true. This also applies during prerendering.

const building: boolean;

dev

Whether the dev server is running. This is not guaranteed to correspond to NODE_ENV or MODE.

const dev: boolean;

version

The value of config.kit.version.name.

const version: string;