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125 lines
5.8 KiB
Markdown
125 lines
5.8 KiB
Markdown
# bch-js
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[](https://www.npmjs.com/package/@psf/bch-js)
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[](https://npmjs.org/package/@psf/bch-js)
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[](https://github.com/Permissionless-Software-Foundation/bch-js/blob/master/LICENSE.md)
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[](https://github.com/feross/standard)
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[bch-js](https://www.npmjs.com/package/@psf/bch-js) is a JavaScript npm library for creating web and mobile apps that can interact with the Bitcoin Cash (BCH) blockchains. It can be used for free, but requires an account on [FullStack.cash](https://fullstack.cash) for increased rate limits. Learn more from [this article](https://troutsblog.com/research/bitcoin-cash/how-to-bch-full-stack-developer) about Full Stack Bitcoin Cash development.
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### Quick Start Videos:
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Here are two YouTube walk-through videos to help you get started:
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- [Introduction to bch-js and the bch-js-examples repository](https://youtu.be/GD2i1ZUiyrk)
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- [Working with the FullStack.cash JWT token](https://youtu.be/GD2i1ZUiyrk)
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### Quick Links
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- [npm Library](https://www.npmjs.com/package/@psf/bch-js)
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- [Documentation](https://bchjs.fullstack.cash/)
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- [Examples](https://github.com/Permissionless-Software-Foundation/bch-js-examples)
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- [bchn.fullstack.cash](https://bchn.fullstack.cash) - The REST API this library talks to by default.
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- [FullStack.cash](https://fullstack.cash) - cloud-based infrastructure for application developers.
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- [FullStack.cash Account](https://fullstack.cash/login) - Get your API key to unlock increased rate limits.
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- [Permissionless Software Foundation](https://psfoundation.cash) - The organization that maintains this library.
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### Quick Notes
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- Install library: `npm install @psf/bch-js`
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- Instantiate the library in your code:
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```
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const BCHJS = require("@psf/bch-js")
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let bchjs = new BCHJS() // Defaults to BCHN network.
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// testnet
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bchjs = new BCHJS({ restURL: 'https://testnet3.fullstack.cash/v4/' })
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```
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This library is intended to be paired with
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the [bch-api](https://github.com/Permissionless-Software-Foundation/bch-api) REST API, and the infrastructure provided by [FullStack.cash](https://fullstack.cash). The `restURL` property can be changed to work with different Bitcoin Cash networks:
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- BCHN Mainnet REST API server: https://bchn.fullstack.cash/v4/
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- ABC Mainnet REST API server: https://abc.fullstack.cash/v4/
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- Testnet3 REST API server: https://testnet3.fullstack.cash/v4/
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- Check server status: https://metrics.fullstack.cash
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### API Key
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The [bch-api](https://github.com/Permissionless-Software-Foundation/bch-api) REST API hosted by [FullStack.cash](https://fullstack.cash) uses JWT tokens to pay for increased
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rate limits when interacting with the back end server. See [this article](https://troutsblog.com/research/bitcoin-cash/how-to-bch-full-stack-developer) if you want to understand the system-as-a-whole. The JWT token can be fed to bch-js _implicitly_ or _explicitly_.
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- Implicitly: bch-js will detect your JWT token if you set the `BCHJSTOKEN` environment variable.
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- Explicitly: You can directly feed in the JWT token with the `apiToken` property when instantiating the library. Here is an example:
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```
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const BCHJS = require("@psf/bch-js")
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let bchjs = new BCHJS({
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restURL: 'https://bchn.fullstack.cash/v3/',
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apiToken: 'eyJhbGciO...' // Your JWT token here.
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})
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```
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### Gatsby
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bch-js is included in this [gatsby-ipfs-template](https://github.com/Permissionless-Software-Foundation/gatsby-ipfs-template) for building uncensorable web apps that can interact with the blockchain. When building a Gatsby (or other front-end app that uses Webpack), you'll need to add these lines to your `gatsby-node.js` file, as per [this issue](https://github.com/gatsbyjs/gatsby/issues/564):
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```
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exports.onCreateWebpackConfig = ({ actions }) => {
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actions.setWebpackConfig({
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node: {
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fs: 'empty'
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}
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})
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}
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```
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This is because the new IPFS class in bch-js uses the fs library for uploading files, which is not supported by Gatsby.
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We also provide [minimal-slp-wallet-web](https://www.npmjs.com/package/minimal-slp-wallet-web) as a basic Bitcoin Cash wallet with SLP support, for front end projects. bch-js is encapsulated inside the instantiation of the library Class.
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## Features
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- [ECMAScript 2017 standard JavaScript](https://en.wikipedia.org/wiki/ECMAScript#8th_Edition_-_ECMAScript_2017) used instead of TypeScript. Works
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natively with node.js v10 or higher.
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- Full SLP tokens support: bch-js has full support for all SLP token functionality, including send, mint, and genesis transactions. It also fully support all aspects of [non-fugible tokans (NFTs)](https://www.youtube.com/watch?v=vvlpYUx6HRs).
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- [Semantic Release](https://github.com/semantic-release/semantic-release) for
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continuous delivery using semantic versioning.
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- [Greenkeeper](https://greenkeeper.io/) automatic dependency management for
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automatically maintaining the latest, most secure dependencies.
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- [IPFS uploads](https://ipfs.io) of all files and dependencies, to backup
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dependencies in case they are ever inaccessible from GitHub or npm.
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## Documentation:
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Full documentation for this library can be found here:
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- [Documentation](https://bchjs.fullstack.cash/)
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bch-js uses [APIDOC](http://apidocjs.com/) so that documentation and working code
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live in the same repository. To generate the documentation:
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- `npm run docs`
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- Open the generated `docs/index.html` file in a web browser.
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## Support
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Have questions? Need help? Join our community support
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[Telegram channel](https://t.me/bch_js_toolkit)
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## IPFS Releases
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Copies of this repository are also published on [IPFS](https://ipfs.io).
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- v4.5.4: QmWv3pxJy3MH8vU5nLUVyzqFxfNKXLQQEnz1rgStNuQijd
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## License
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[MIT](LICENSE.md)
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