Hi folks,
I’m new to ReScript and I want to use Firebase with ReScript and I started to learn how to create bindings:
So far I have:
module App = {
type app
type appConfig = {
apiKey: string,
authDomain: string,
projectId: string,
storageBucket: string,
messagingSenderId: string,
appId: string,
}
@module("firebase/app")
external initializeApp: appConfig => app = "initializeApp"
}
module Firestore = {
type firestore
@module("firebase/firestore")
external getFirestore: App.app => firestore = "getFirestore"
type collectionReference<'documentdata, 'metadata>
@module("firebase/firestore") @variadic
external collection: (
firestore,
string,
array<string>,
) => collectionReference<'documentdata, 'metadata> = "collection"
type query<'documentdata, 'metadata>
type querySnapshot<'documentdata, 'metadata>
@module("firebase/firestore")
external getDocs: query<'documentdata, 'metadata> => Js.Promise.t<
querySnapshot<'documentdata, 'metadata>,
> = "getDocs"
external collectionReferenceToQuery: collectionReference<'documentdata, 'metadata> => query<
'documentdata,
'metadata,
> = "%identity"
type queryDocumentSnapshot<'documentdata, 'metadata>
@get
external docs: querySnapshot<'documentdata, 'metadata> => array<
queryDocumentSnapshot<'documentdata, 'metadata>,
> = "docs"
@send
external _data: (queryDocumentSnapshot<'documentdata, 'metadata>, unit) => 'documentdata = "data"
let data = qds => _data(qds, ())
}
Usage:
open Firebase.Firestore
let firebaseConfig: Firebase.App.appConfig = {
apiKey:....
}
type entry = {content: string}
@react.component
let make = () => {
React.useEffect0(() => {
let app = Firebase.App.initializeApp(firebaseConfig)
let store = getFirestore(app)
collection(store, "entries", [])
->collectionReferenceToQuery
->getDocs
->Promise.thenResolve(querySnapshot => {
let snapshots = querySnapshot->docs
Belt.Array.forEach(
snapshots,
snapshot => {
let data = snapshot->data
Js.Console.log(data.content)
},
)
})
->Promise.done
None
})
<h1> {React.string("Thunder")} </h1>
}
This works, but goodness, writing these bindings is a pain. Are there any existing bindings available? Or perhaps there’s a way to generate them automatically?
Any feedback on my work so far is also appreciated.
Cheers!
