Delete index at array in Firestore

Question

I got this data in my document:

I want to delete index 0. How do I do this? This should do the trick I thought:

    db.collection(\"data\").         


        

Answer 1

export const deleteArrayIndex = (collectionName, id, index) => {
    db.collection(collectionName).doc(id).update(
        { [index]: firebase.firestore.FieldValue.delete() }
    ).then(function () {
        console.log(index + "  is deleted");
    }).catch(function (error) {
        console.error("Error removing document: ", error);
    });
}