nativescript-plugin-firebase-ssi/app/firestore/index.d.ts

Fire. Base. Firebase!

import * as firebase from "../../firebase";
export declare namespace firestore {
    class Firestore {
        collection(collectionPath: string): firebase.firestore.CollectionReference;
        collectionGroup(id: string): firebase.firestore.CollectionGroup;
        doc(path: string): firebase.firestore.DocumentReference;
        FieldValue(): firebase.firestore.FieldValue;
        GeoPoint(latitude: number, longitude: number): firebase.firestore.GeoPoint;
        runTransaction<T>(updateFunction: (transaction: firebase.firestore.Transaction) => Promise<any>): Promise<void>;
        batch(): firebase.firestore.WriteBatch;
        settings(settings: firebase.firestore.Settings): void;
        clearPersistence(): Promise<void>;
    }
}