My collection of JS/TS snippets

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Posted on 10.06.2020

Image by Marcin Wichary on Flickr

Refill!

Here I have a collection of useful JS/TS snippets used in profession day to day work routine.

Mongo

Connect to a database and retrieve data from a collection

While crawling the official docs, could not find a working example of how to extract data from a database. The snippet below is basically a compilation of some posts from Stackoverflow:

#!/usr/bin/env node

const MongoClient = require('mongodb').MongoClient;

const MONGO_URI = 'mongodb://localhost:27017/?maxPoolSize=20&w=majority';
const client = new MongoClient(MONGO_URI);

async function run() {
    try {
        const connection = await client.connect();
        const database = connection.db('db_name');
        const registry = database.collection('collection_name');

        const result = await registry.find({}).toArray();

        console.log(result);
    } finally {
        await client.close();
    }
}
run().catch(console.dir);

The code is licensed under the MIT license

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Sergei Gannochenko

Business-oriented fullstack engineer, in ❤️ with Tech.
Golang, React, TypeScript, Docker, AWS, Jamstack.
15+ years in dev.