A lightweight MongoDB Hook module for node

Tested with the following packages

• mongodb https://www.npmjs.com/package/mongodb/v/3.6.6

Usage

Import mongodb and mongohook

const MongoHook = require('@dfrankes/mongohook');

// Pass in the mongodb package require, this will return a hooked mongodb package
const mongodb   = new MongoHook(require('mongodb'), {});

You can now use the mongodb package as usual

mongodb.MongoClient.connect

Create a before hgook for the collection mycollection

// Create a before hook for the collection insertOne
// args is the original function arguments
// for a updateOne it uses the following layout
// args['0'] = the find query
// args['1'] = the update query ($set:{hello: true});
// just console.log the args to check what you can modify

// You can find a full example in example/index.js
client.collection('mycollection').before('insertOne', (args) => {
    // args is an array with all the original method arguments
    // You can for example modify a insertOne query like this
    args['0'].createdAt = new Date();

    // return the original arguments
    // this will be executed in the original method
    return args;
});

// Create a afterHook
client.collection('mycollection').after('insertOne', async (result) => {
    console.log("after insertOne on mycollection");
});

Supported hooks

hook
insert
insertOne
insertMany
replaceOne
update
updateOne
updateMany