Make load tracking configurable

README.md

@@ -77,6 +77,7 @@ _NOTE: By default, this plugin only generates output when run in production mode
 | `disableCookies` | (optional) If true, no cookie will be used by Matomo.                                                                                                                                                                                                                                                              |
 | `cookieDomain`   | (optional) Specify cookie domain.                                                                                                                                                                                                                                                                                  |
 | `localScript`    | (optional) If set, load local `piwik.js` script from the given path, instead of loading it from your `matomoUrl`.                                                                                                                                                                                                  |
+| `trackLoad`      | (optional) If true, it will track the loading of the matomo library. Defaults to `true`.                                                                                                                                                                                                       |
 | `dev`            | (optional) Activate dev mode by setting to `true`. Will load all scripts despite not running in `production` environment. Ignores your local browser's DNT header too. Outputs some information in console about what it is doing. Useful for local testing but careful: all hits will be send like in production. |
 
 ```js

src/gatsby-browser.js

@@ -12,7 +12,7 @@ function getDuration() {
   return difference
 }
 
-export const onRouteUpdate = ({ location, prevLocation }) => {
+export const onRouteUpdate = ({ location, prevLocation }, pluginOptions) => {
   if (process.env.NODE_ENV === 'production' || window.dev === true) {
     if (!window._paq) return
 
@@ -22,6 +22,10 @@ export const onRouteUpdate = ({ location, prevLocation }) => {
       prevLocation &&
       prevLocation.pathname + prevLocation.search + prevLocation.hash
 
+    const {
+      trackLoad = true
+    } = pluginOptions
+
     // document.title workaround stolen from:
     // https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-google-analytics/src/gatsby-browser.js
     const sendPageView = () => {
@@ -45,7 +49,10 @@ export const onRouteUpdate = ({ location, prevLocation }) => {
 
     if (first) {
       first = false
-      _paq.push(['trackEvent', 'javascript', 'load', 'duration', getDuration()])
+
+      if (trackLoad) {
+        _paq.push(['trackEvent', 'javascript', 'load', 'duration', getDuration()])
+      }
 
       if (dev) {
         console.debug(`[Matomo] Tracking duration for: ${url}`)