Nuxt custom module hooks not called - vuejs2

Question

I want to pass some extra data from the ssr server that's present after the middleware has run, and use that on client side middleware. A bit similar to what nuxt already does with vuex.
Documentation at the render:context hook:
Every time a route is server-rendered and before render:route hook. Called before serializing Nuxt context into window.__NUXT__, useful to add some data that you can fetch on client-side.
Now my custom plugin defines some hooks as stated in the documentation, but not all seem to be called properly:
module.exports = function() {
this.nuxt.hook('render:route', (url, result, context) => {
console.log('This one is called on every server side rendering')
}
this.nuxt.hook('renderer', renderer => {
console.log('This is never called')
}
this.nuxt.hook('render:context', context => {
console.log('This is only called once, when it starts loading the module')
}
}
What am I doing wrong and how can I pass custom ssr data to the client side renderer?

Answer 1

Ok, just found the solution to the core problem of passing custom data from the (ssr) server to the client:
Create a plugin: plugins/my-plugin.js
export default ({ beforeNuxtRender, nuxtState }) => {
if (process.server) {
beforeNuxtRender(({ nuxtState }) => {
nuxtState.myCustomData = true
})
} else {
console.log('My cystom data on the client side:', nuxtState.myCustomData)
}
}
Then register the plugin in your nuxt.config.js:
module.exports = {
plugins: ['~/plugins/my-plugin']
}
Docs here.