#Use MongoDB code

Silt can replace MongoDB for code that uses its supported JSON collection API. The main change is the client import and initialization.

#Change the client

A MongoDB application opens a server connection:

import { MongoClient } from 'mongodb';

const client = new MongoClient('mongodb://localhost:27017');
await client.connect();
const db = client.db('app');

With Silt, open a SQLite file:

import { MongoClient } from '@silt-db/mongodb';

const client = new MongoClient('./app.sqlite', { dbName: 'app' });
await client.connect();
const db = client.db('app');

Code using supported methods on db and its collections stays the same:

export async function listOpenTasks(db) {
  return db.collection('tasks').find({ done: false }).sort({ priority: -1 }).toArray();
}

Use one long-lived client for the application and close it during shutdown. The configured dbName names the single database represented by that file. Another name is rejected; use another file for another database.

#Use the MongoDB documentation

Silt follows MongoDB query semantics for supported operators. Use the official guides for syntax and the Silt references to check coverage.

#Check application dependencies

This is an in-process JavaScript API replacement, not a MongoDB network endpoint. A library can use Silt when it accepts an injected compatible Db or Collection and stays within the supported API. A library that opens its own MongoDB connection, requires BSON classes, or depends on driver internals needs additional integration.

Silt does not currently claim drop-in compatibility with every MongoDB library, including Mongoose. Check the compatibility reference against the methods, types, and options your code actually uses.

For runtime choices, continue with Node deployment or Expo.