When retrieving a collection from Firebase, I use the following basic approach:
import { getFirestore, collection, getDocs } from "firebase/firestore";
import { Invoice } from "../models/Invoice";
const db = getFirestore();
export const getInvoicesCollection = async () => {
try {
const snapshot = await getDocs(collection(db, "invoices"));
const docs: Invoice[] = snapshot.docs.map((doc) => ({
...doc.data(),
}));
console.log(docs);
} catch (error) {
console.error(error);
}
};
export default getInvoicesCollection;
To refine the response object received from Firebase, specifically mapping only what is needed into a new object, this portion of code executes:
const docs: Invoice[] = snapshot.docs.map((doc) => ({
...doc.data(),
}));
console.log(docs);
The outcome is displayed in the browser as shown here:
https://i.sstatic.net/qiwbe.png
However, TypeScript raises an error message stating:
Type '{ [x: string]: any; }[]' is not assignable to type 'Invoice[]'.
Type '{ [x: string]: any; }' is missing the following properties from type 'Invoice': id, createdAt, paymentDue, description, and 8 more.
To address this issue, it seems that the variable is interpreted as an array of objects with a single property being a string capable of holding any value. How can I provide proper definition for the object structure?