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https://github.com/stellar/js-stellar-base

The lowest-level stellar helper library. It consists of classes to read, write, hash, and sign Stellar xdr
https://github.com/stellar/js-stellar-base

blockchain cryptocurrency javascript stellar

Last synced: 7 days ago
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The lowest-level stellar helper library. It consists of classes to read, write, hash, and sign Stellar xdr

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# JS Stellar Base



[![Tests](https://github.com/stellar/js-stellar-base/actions/workflows/tests.yml/badge.svg)](https://github.com/stellar/js-stellar-base/actions/workflows/tests.yml)

[![Code Climate](https://codeclimate.com/github/stellar/js-stellar-base/badges/gpa.svg)](https://codeclimate.com/github/stellar/js-stellar-base)

[![Coverage Status](https://coveralls.io/repos/stellar/js-stellar-base/badge.svg?branch=master&service=github)](https://coveralls.io/github/stellar/js-stellar-base?branch=master)

[![Dependency Status](https://david-dm.org/stellar/js-stellar-base.svg)](https://david-dm.org/stellar/js-stellar-base)



The stellar-base library is the lowest-level stellar helper library. It consists

of classes to read, write, hash, and sign the xdr structures that are used in

[stellar-core](https://github.com/stellar/stellar-core). This is an

implementation in JavaScript that can be used on either Node.js or web browsers.



- **[API Reference](https://stellar.github.io/js-stellar-base/)**



> **Warning!** The Node version of this package uses the [`sodium-native`](https://www.npmjs.com/package/sodium-native) package, a native implementation of [Ed25519](https://ed25519.cr.yp.to/) in Node.js, as an [optional dependency](https://docs.npmjs.com/files/package.json#optionaldependencies).

> This means that if for any reason installation of this package fails, `stellar-base` will fallback to the much slower implementation contained in [`tweetnacl`](https://www.npmjs.com/package/tweetnacl).

>

> If you'd explicitly prefer **not** to install the `sodium-native` package, pass the appropriate flag to skip optional dependencies when installing this package (e.g. `--no-optional` if using `npm install` or `--without-optional` using `yarn install`).

>

> If you are using `stellar-base` in a browser you can ignore this. However, for production backend deployments you should most likely be using `sodium-native`.

> If `sodium-native` is successfully installed and working,

> `StellarBase.FastSigning` variable will be equal `true`. Otherwise it will be

> `false`.



## Quick start



Using yarn to include js-stellar-base in your own project:



```shell

yarn add @stellar/stellar-base

```



For browsers, [use Bower to install it](#to-use-in-the-browser). It exports a

variable `StellarBase`. The example below assumes you have `stellar-base.js`

relative to your html file.



```html



  console.log(StellarBase);



```



## Install



### To use as a module in a Node.js project



1. Install it using yarn:



```shell

yarn add @stellar/stellar-base

```



2. require/import it in your JavaScript:



```js

var StellarBase = require('@stellar/stellar-base');

```



### To self host for use in the browser



1. Install it using [bower](http://bower.io):



```shell

bower install stellar-base

```



2. Include it in the browser:



```html



  console.log(StellarBase);



```



If you don't want to use install Bower, you can copy built JS files from the

[bower-js-stellar-base repo](https://github.com/stellar/bower-js-stellar-base).



### To use the [cdnjs](https://cdnjs.com/libraries/stellar-base) hosted script in the browser



1. Instruct the browser to fetch the library from

   [cdnjs](https://cdnjs.com/libraries/stellar-base), a 3rd party service that

   hosts js libraries:



```html



  console.log(StellarBase);



```



Note that this method relies using a third party to host the JS library. This

may not be entirely secure.



Make sure that you are using the latest version number. They can be found on the

[releases page in Github](https://github.com/stellar/js-stellar-base/releases).



### To develop and test js-stellar-base itself



1. Install Node 18.x



We support the oldest LTS release of Node, which is [currently 18.x](https://nodejs.org/en/about/releases/). Please likewise install and develop on Node 16 so you don't get surprised when your code works locally but breaks in CI.



If you work on several projects that use different Node versions, you might find helpful to install a NodeJS version manager:



  - https://github.com/creationix/nvm

  - https://github.com/wbyoung/avn

  - https://github.com/asdf-vm/asdf



2. Install Yarn



This project uses [Yarn](https://yarnpkg.com/) to manages its dependencies. To install Yarn, follow the project instructions available at https://yarnpkg.com/en/docs/install.



3. Clone the repo



```shell

git clone https://github.com/stellar/js-stellar-base.git

```



4. Install dependencies inside js-stellar-base folder



```shell

cd js-stellar-base

yarn

```



5. Observe the project's code style



While you're making changes, make sure to regularly run the linter to catch any

linting errors (in addition to making sure your text editor supports ESLint)



```shell

yarn lint

```



as well as fixing any formatting errors with



```shell

yarn fmt

```



If you're working on a file not in `src`, limit your code to Node 6.16 ES! See

what's supported here: https://node.green/. (Our npm library must support

earlier versions of Node, so the tests need to run on those versions.)



#### Updating XDR definitions



1. Make sure you have [Docker](https://www.docker.com/) installed and running.

2. `make reset-xdr`



## Usage



For information on how to use js-stellar-base, take a look at the docs in the

[docs folder](./docs).



## Testing



To run all tests:



```shell

yarn test

```



To run a specific set of tests:



```shell

yarn test:node

yarn test:browser

```



Tests are also run automatically in Github Actions for every master commit and

pull request.



## Documentation



Documentation for this repo lives inside the [docs folder](./docs).



## Contributing



Please see the [CONTRIBUTING.md](./CONTRIBUTING.md) for details on how to

contribute to this project.



## Publishing to npm



```

npm version [ | major | minor | patch | premajor | preminor | prepatch | prerelease]

```



A new version will be published to npm **and** Bower by GitHub Actions.



npm >= 2.13.0 required. Read more about

[npm version](https://docs.npmjs.com/cli/version).



## License



js-stellar-base is licensed under an Apache-2.0 license. See the

[LICENSE](./LICENSE) file for details.