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https://github.com/jnordberg/dsteem

Steem blockchain RPC client
https://github.com/jnordberg/dsteem

blockchain rpc-client steem

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Steem blockchain RPC client

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README 

        

# [dsteem](https://github.com/jnordberg/dsteem) [![Build Status](https://img.shields.io/circleci/project/github/jnordberg/dsteem.svg?style=flat-square)](https://circleci.com/gh/jnordberg/workflows/dsteem) [![Coverage Status](https://img.shields.io/coveralls/jnordberg/dsteem.svg?style=flat-square)](https://coveralls.io/github/jnordberg/dsteem?branch=master) [![Package Version](https://img.shields.io/npm/v/dsteem.svg?style=flat-square)](https://www.npmjs.com/package/dsteem)



Robust [steem blockchain](https://steem.io) client library that runs in both node.js and the browser.



* [Demo](https://comments.steem.vc) ([source](https://github.com/jnordberg/dsteem/tree/master/examples/comment-feed))

* [Code playground](https://playground.steem.vc)

* [Documentation](https://jnordberg.github.io/dsteem/)

* [Bug tracker](https://github.com/jnordberg/dsteem/issues)



---



**note** As of version 0.7.0 WebSocket support has been removed. The only transport provided now is HTTP(2). For most users the only change required is to swap `wss://` to `https://` in the address. If you run your own full node make sure to set the proper [CORS headers](https://en.wikipedia.org/wiki/Cross-origin_resource_sharing) if you plan to access it from a browser.



---



Browser compatibility

---------------------



[![Build Status](https://saucelabs.com/browser-matrix/jnordberg-dsteem.svg)](https://saucelabs.com/open_sauce/user/jnordberg-dsteem)



Installation

------------



### Via npm



For node.js or the browser with [browserify](https://github.com/substack/node-browserify) or [webpack](https://github.com/webpack/webpack).



```

npm install dsteem

```



### From cdn or self-hosted script



Grab `dist/dsteem.js` from a [release](https://github.com/jnordberg/dsteem/releases) and include in your html:



```html



```



Or from the [unpkg](https://unpkg.com) cdn:



```html



```



Make sure to set the version you want when including from the cdn, you can also use `dsteem@latest` but that is not always desirable. See [unpkg.com](https://unpkg.com) for more information.



Usage

-----



### In the browser



```html



    var client = new dsteem.Client('https://api.steemit.com')

    client.database.getDiscussions('trending', {tag: 'writing', limit: 1}).then(function(discussions){

        document.body.innerHTML += '<h1>' + discussions[0].title + '</h1>'

        document.body.innerHTML += '<h2>by ' + discussions[0].author + '</h2>'

        document.body.innerHTML += '<pre style="white-space: pre-wrap">' + discussions[0].body + '</pre>'

    })



```



See the [demo source](https://github.com/jnordberg/dsteem/tree/master/examples/comment-feed) for an example on how to setup a livereloading TypeScript pipeline with [wintersmith](https://github.com/jnordberg/wintersmith) and [browserify](https://github.com/substack/node-browserify).



### In node.js



With TypeScript:



```typescript

import {Client} from 'dsteem'



const client = new Client('https://api.steemit.com')



for await (const block of client.blockchain.getBlocks()) {

    console.log(`New block, id: ${ block.block_id }`)

}

```



With JavaScript:



```javascript

var dsteem = require('dsteem')



var client = new dsteem.Client('https://api.steemit.com')

var key = dsteem.PrivateKey.fromLogin('username', 'password', 'posting')



client.broadcast.vote({

    voter: 'username',

    author: 'almost-digital',

    permlink: 'dsteem-is-the-best',

    weight: 10000

}, key).then(function(result){

   console.log('Included in block: ' + result.block_num)

}, function(error) {

   console.error(error)

})

```



With ES2016 (node.js 7+):



```javascript

const {Client} = require('dsteem')



const client = new Client('https://api.steemit.com')



async function main() {

    const props = await client.database.getChainProperties()

    console.log(`Maximum blocksize consensus: ${ props.maximum_block_size } bytes`)

    client.disconnect()

}



main().catch(console.error)

```



With node.js streams:



```javascript

var dsteem = require('dsteem')

var es = require('event-stream') // npm install event-stream

var util = require('util')



var client = new dsteem.Client('https://api.steemit.com')



var stream = client.blockchain.getBlockStream()



stream.pipe(es.map(function(block, callback) {

    callback(null, util.inspect(block, {colors: true, depth: null}) + '\n')

})).pipe(process.stdout)

```



Bundling

--------



The easiest way to bundle dsteem (with browserify, webpack etc.) is to just `npm install dsteem` and `require('dsteem')` which will give you well-tested (see browser compatibility matrix above) pre-bundled code guaranteed to JustWork™. However, that is not always desirable since it will not allow your bundler to de-duplicate any shared dependencies dsteem and your app might have.



To allow for deduplication you can `require('dsteem/lib/index-browser')`, or if you plan to provide your own polyfills: `require('dsteem/lib/index')`. See `src/index-browser.ts` for a list of polyfills expected.



---



*Share and Enjoy!*