mr-gtag/dist/es/index.js

Easy, strong typed, and a modern way to use google analytics gtag lib.

const anyWindow = window;
const defaultGtagConfigurationOptions = {
    send_page_view: true,
};
/**
 * Only injects the google analytics gtag lib without calling config.
 * @param trackingId The ga tracking id.
 */
function onlyInstallGtag(trackingId) {
    const { head } = document;
    const script = document.createElement('script');
    script.type = 'text/javascript';
    script.async = true;
    script.src = `https://www.googletagmanager.com/gtag/js?id=${trackingId}`;
    head.insertBefore(script, head.firstChild);
    anyWindow.dataLayer = anyWindow.dataLayer || [];
    gtagRaw('js', new Date());
}
/**
 * Injects the google analytics gtag lib.
 * @param trackingId The ga tracking id.
 * @param options The options to configure.
 */
function installGtag(trackingId, options) {
    onlyInstallGtag(trackingId);
    options = Object.assign(Object.assign({}, defaultGtagConfigurationOptions), options);
    gtag('config', trackingId, options);
}
function gtagRaw(...params) {
    anyWindow.dataLayer.push(arguments);
}
// tslint:enable: unified-signatures, max-line-length
function gtag(arg1, arg2, arg3) {
    anyWindow.dataLayer.push(arguments);
}

export { gtag, gtagRaw, installGtag, onlyInstallGtag };