npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

mongoose-bignumber

v2.0.0

Published

Mongoose type for storing arbitrary-precision decimal numbers (using bignumber.js)

Downloads

3,703

Readme

Build Status Coverage Status

baldercm/mongoose-bignumber

Mongoose type for storing arbitrary-precision decimal numbers (using bignumber.js).

Use the power of BigNumber instances in your model and obtain seamlessly conversion to String values when saving to MongoDB and serializing as JSON.

Installation

Install the module using npm:

npm i mongoose-bignumber

mongoose and bignumber.js are declared as peerDependencies, so you have to install these dependencies yourself if you are not using them yet:

npm i mongoose bignumber.js mongoose-bignumber

Basic Usage

Require the module and use it in your schema:

const mongoose        = require('mongoose')
const BigNumber       = require('bignumber.js')
const BigNumberSchema = require('mongoose-bignumber')

// you may use BigNumberSchema or mongoose.Schema.Types.BigNumber
// standard number validators work for Number, String and BigNumber values
const exampleSchema = new mongoose.Schema({
  val1:  { type: BigNumberSchema, required: true, min: '0' },
  val2:  { type: BigNumberSchema, scale: 2, rounding: BigNumber.ROUND_HALF_UP },
  val2:  { type: BigNumberSchema, scale: 2, max: new BigNumber('99.99') },
  val3:  { type: mongoose.Schema.Types.BigNumber },
})

const Example = mongoose.model('Example', exampleSchema)

The only overwritten method for BigNumberSchema that will differ from a regular BigNumber is valueOf(), that will behave like toFixed() using the specified scale and rounding options.

Options

Supports required, min, max validators.

scale and rounding schema options will be applied when saving to MongoDB or serializing with toJSON or toObject.

scale {int}

Sets the scale (decimal precision).

scale defaults to 0.

rounding {int}

Sets the BigNumber rounding method. See bignumber.js docs for more details.

rounding defaults to BigNumber.ROUND_HALF_UP.

Example

const mongoose        = require('mongoose')
const BigNumber       = require('bignumber.js')
const BigNumberSchema = require('mongoose-bignumber')

const exampleSchema = new mongoose.Schema({
  bignumber: { type: BigNumberSchema, scale: 2, rounding: BigNumber.ROUND_HALF_UP },
  // will format using:    BigNumber.toFixed(2, BigNumber.ROUND_HALF_UP)
})

const Model = mongoose.model('Example', exampleSchema)

let model = new Model({bignumber: '23.456789'})
await model.save() // {_id: ..., bignumber: '23.46'}

// model.bignumber is a BigNumber instance
assert(model.bignumber instanceof BigNumber)

// and we can use it as a regular BigNumber
// {_id: ..., bignumber: '23.46'}
model.bignumber = model.bignumber.add('11.11')
// {_id: ..., bignumber: '34.57'}

// BigNumber instances are immutable, this won't change the model!
// {_id: ..., bignumber: '34.57'}
model.bignumber.add('11.11')
// {_id: ..., bignumber: '34.57'}

Contributing

git clone https://github.com/baldercm/mongoose-bignumber
npm install
npm test
npm run lint

License

MIT