del.js

// SYNC WITH HASURA ON USER DELETE
exports.processDelete = functions.auth.user().onDelete(async (user) => {
    const mutation = `mutation($id: String!) {
        delete_users(where: {id: {_eq: $id}}) {
          affected_rows
        }
    }`;
    const id = user.uid;
    try {
        const data = await client.request(mutation, {
            id: id,
        })
        return data;
    } catch (e) {
        throw new functions.https.HttpsError('sync-failed');

    }
});