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Importable JavaScript library that allows web applications to directly interface with Scatter Desktop, Classic and Mobile.
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README.md

Scatter JS

type version package
core npm version @scatterjs/core
blockchain npm version @scatterjs/eosjs
blockchain npm version @scatterjs/eosjs2
blockchain npm version @scatterjs/web3
blockchain npm version @scatterjs/tron
wallet npm version @scatterjs/lynx

Want some quick code?

Here's some boilerplates for you to just get starts quickly.

eosjs@16.0.9

Installation: npm i -S @scatterjs/core @scatterjs/eosjs eosjs@16.0.9

import ScatterJS from '@scatterjs/core';
import ScatterEOS from '@scatterjs/eosjs';
import Eos from 'eosjs';

ScatterJS.plugins( new ScatterEOS() );

const network = ScatterJS.Network.fromJson({
    blockchain:'eos',
    chainId:'aca376f206b8fc25a6ed44dbdc66547c36c6c33e3a119ffbeaef943642f0e906',
    host:'nodes.get-scatter.com',
    port:443,
    protocol:'https'
});

ScatterJS.connect('YourAppName', {network}).then(connected => {
    if(!connected) return console.error('no scatter');

    const eos = ScatterJS.eos(network, Eos);

    ScatterJS.login().then(id => {
        if(!id) return console.error('no identity');
        const account = ScatterJS.account('eos');
        const options = {authorization:[`${account.name}@${account.authority}`]};
        eos.transfer(account.name, 'safetransfer', '0.0001 EOS', account.name, options).then(res => {
            console.log('sent: ', res);
        }).catch(err => {
            console.error('error: ', err);
        });
    });
});

eosjs@20.0.0

Installation: npm i -S @scatterjs/core @scatterjs/eosjs2 eosjs@20.0.0

import ScatterJS from '@scatterjs/core';
import ScatterEOS from '@scatterjs/eosjs2';
import {JsonRpc, Api} from 'eosjs';

ScatterJS.plugins( new ScatterEOS() );

const network = ScatterJS.Network.fromJson({
    blockchain:'eos',
    chainId:'aca376f206b8fc25a6ed44dbdc66547c36c6c33e3a119ffbeaef943642f0e906',
    host:'nodes.get-scatter.com',
    port:443,
    protocol:'https'
});
const rpc = new JsonRpc(network.fullhost());

ScatterJS.connect('YourAppName', {network}).then(connected => {
    if(!connected) return console.error('no scatter');

    const eos = ScatterJS.eos(network, Api, {rpc});

    ScatterJS.login().then(id => {
        if(!id) return console.error('no identity');
        const account = ScatterJS.account('eos');

        eos.transact({
            actions: [{
                account: 'eosio.token',
                name: 'transfer',
                authorization: [{
                    actor: account.name,
                    permission: account.authority,
                }],
                data: {
                    from: account.name,
                    to: 'safetransfer',
                    quantity: '0.0001 EOS',
                    memo: account.name,
                },
            }]
        }, {
            blocksBehind: 3,
            expireSeconds: 30,
        }).then(res => {
            console.log('sent: ', res);
        }).catch(err => {
            console.error('error: ', err);
        });
    });
});

tronweb

Installation: npm i -S @scatterjs/core @scatterjs/tron tronweb

import ScatterJS from '@scatterjs/core';
import ScatterTron from '@scatterjs/tron';
import TronWeb from 'tronweb';

ScatterJS.plugins( new ScatterTron() );

const network = ScatterJS.Network.fromJson({
    blockchain:'tron',
    chainId:'1',
    host:'api.trongrid.io',
    port:443,
    protocol:'https'
});

const httpProvider = new TronWeb.providers.HttpProvider(network.fullhost());
let tron = new TronWeb(httpProvider, httpProvider, network.fullhost());
tron.setDefaultBlock('latest');

ScatterJS.connect('YourAppName', {network}).then(connected => {
    if(!connected) return console.error('no scatter');

    tron = ScatterJS.trx(network, tron);

    ScatterJS.login().then(id => {
        if(!id) return console.error('no identity');
        const account = ScatterJS.account('trx');
        tron.trx.sendTransaction('TX...', 100).then(res => {
            console.log('sent: ', res);
        }).catch(err => {
            console.error('error: ', err);
        });
    });
});

web3

Installation: npm i -S @scatterjs/core @scatterjs/web3 web3

import ScatterJS from '@scatterjs/core';
import ScatterETH from '@scatterjs/web3';
import Web3 from 'web3';

ScatterJS.plugins( new ScatterETH() );

const network = ScatterJS.Network.fromJson({
    blockchain:'eth',
    chainId:'1',
    host:'YOUR ETHEREUM NODE',
    port:443,
    protocol:'https'
});

ScatterJS.connect('YourAppName', {network}).then(connected => {
    if(!connected) return console.error('no scatter');

    const web3 = ScatterJS.web3(network, Web3);

    ScatterJS.login().then(id => {
        if(!id) return console.error('no identity');
        const account = ScatterJS.account('trx');
        web3.eth.sendTransaction({
            from: account.address,
            to: '0x...',
            value: '1000000000000000'
        }).then(res => {
            console.log('sent: ', res);
        }).catch(err => {
            console.error('error: ', err);
        });
    });
});




Supported Wallets

Automatically Supported Wallets

Disclaimer: Wallets being supported by this SDK does not mean they are endorsed or vetted.

These wallets do not require you include any plugins. They run Scatter Protocols inside of their wallet and mimic our existing APIs.

Does your wallet support Scatter Protocols? Issue a Pull Request on the README.md and add it here.

dapp supported blockchains platform wallet libs
EOSIO, Tron, Ethereum Scatter Desktop Desktop eosjs@16.0.9, eosjs@20+, tronweb, web3
EOSIO, Ethereum Scatter Extension Desktop eosjs@16.0.9, web3
EOSIO TokenPocket Mobile eosjs@16.0.9, eosjs@20+
EOSIO MEET.ONE Mobile eosjs@16.0.9, eosjs@20+
EOSIO imToken Mobile eosjs@16.0.9
EOSIO PocketEOS Mobile eosjs@16.0.9
EOSIO MoreWallet Mobile eosjs@16.0.9
EOSIO NOVAWallet Mobile eosjs@16.0.9
EOSIO Chaince Wallet Mobile eosjs@16.0.9
EOSIO EOS LIVE Mobile eosjs@16.0.9
EOSIO Starteos Mobile eosjs@16.0.9, eosjs@20+
EOSIO CoinUs Wallet Mobile eosjs@16.0.9
EOSIO TokenBase Wallet Mobile eosjs@16.0.9, eosjs@20+
EOSIO ET Wallet Mobile eosjs@16.0.9, eosjs@20+
EOSIO Wombat Wallet Mobile eosjs@16.0.9, eosjs@20+

Plugin Supported Wallets

These wallets require a plugin to support. ScatterJS will mutate standardized blockchain library requests for you into their required formats.

dapp supported blockchains wallet platform plugin libs
EOSIO Lynx Mobile scatterjs-plugin-lynx eosjs@20+



Installation

To use ScatterJS you must have at least the core. From that point forward you can mix-match the plugins you require.

blockchain library installation command
eosjs npm i -S @scatterjs/core @scatterjs/eosjs eosjs@16.0.9
eosjs2 (@20+) npm i -S @scatterjs/core @scatterjs/eosjs2 eosjs@20.0.0
tronweb npm i -S @scatterjs/core @scatterjs/tron tronweb
web3 npm i -S @scatterjs/core @scatterjs/web3 web3

CDN

<script src="https://cdn.scattercdn.com/file/scatter-cdn/js/latest/scatterjs-core.min.js"></script>
<script src="https://cdn.scattercdn.com/file/scatter-cdn/js/latest/scatterjs-plugin-eosjs.min.js"></script>
<script src="https://cdn.scattercdn.com/file/scatter-cdn/js/latest/scatterjs-plugin-eosjs2.min.js"></script>
<script src="https://cdn.scattercdn.com/file/scatter-cdn/js/latest/scatterjs-plugin-web3.min.js"></script>
<script src="https://cdn.scattercdn.com/file/scatter-cdn/js/latest/scatterjs-plugin-tron.min.js"></script>
<script src="https://cdn.scattercdn.com/file/scatter-cdn/js/latest/scatterjs-plugin-lynx.min.js"></script>

Building the minified bundles from Git

If you don't want to use Scatter's CDN, and you can't/don't want to use the NPM packages, then you can also build the Scatter-JS bundles from source.

Webpack will automatically add a version/license header to the top of the bundle files, so that you can identify the version of each Scatter-JS component after you've copied them into a project.

To generate the .min.js files from the source code in this repository, simply run the following commands:

git clone https://github.com/GetScatter/scatter-js.git
cd scatter-js
# Install NPM dependencies
yarn install        # alternative: npm install
# Generate the .min.js minified JS bundles into the folder 'bundles/' using Webpack
yarn run pack       # alternative: npm run pack



Instantiation

As early as you can in your project, instantiate both ScatterJS and your selected plugins.

Nodejs

import ScatterJS from '@scatterjs/core';
import ScatterEOS from '@scatterjs/eosjs'

ScatterJS.plugins( new ScatterEOS() );

Vanilla

<script src="scatterjs-core.min.js"></script>
<script src="scatterjs-plugin-eosjs.min.js"></script>

<script>
    ScatterJS.plugins( new ScatterEOS() );
</script>

Multiple Plugins

import ScatterJS from '@scatterjs/core';
import ScatterEOS from '@scatterjs/eosjs'
import ScatterTron from '@scatterjs/tron'
import ScatterLynx from 'scatterjs-plugin-lynx'

ScatterJS.plugins( new ScatterEOS(), new ScatterTron(), new ScatterLynx(Eos || {Api, JsonRpc}) );



Build the network object

Networks tell Scatter which blockchain nodes you're going to be working with.

const network = ScatterJS.Network.fromJson({
    blockchain:'eos',
    chainId:'aca376f206b8fc25a6ed44dbdc66547c36c6c33e3a119ffbeaef943642f0e906',
    host:'nodes.get-scatter.com',
    port:443,
    protocol:'https'
});



Connect to an available wallet

Once you are connected you can then call API methods on ScatterJS

ScatterJS.connect('MyAppName', {network}).then(connected => {
    if(!connected) return false;
    // ScatterJS.someMethod();
});

You can see full @scatterjs/core API docs here



Getting Blockchain Accounts

Login with the network passed into ScatterJS.connect

ScatterJS.login().then(...);

Login with multiple networks

ScatterJS.login({accounts:[network1, network2]).then(...);

Logout

ScatterJS.logout().then(...);

After a successful login, the "Identity" will be available at ScatterJS.identity. If a user refreshes the page and has already logged in, the ScatterJS.identity property will be auto-filled.



Get blockchain accounts from the identity

Because accounts are nested within the Identity there is an easy method for fetching them.

Using the helper

const account = ScatterJS.account('eos')
// Result: {name:'...', authority:'active', publicKey:'...', blockchain:'eos', chainId:'...'}

const account = ScatterJS.account('eth')
// Result: {address:'...', blockchain:'eth', chainId:'1'}

const account = ScatterJS.account('trx')
// Result: {address:'...', blockchain:'trx', chainId:'1'}

From the Identity

const account = ScatterJS.identity.accounts.find(x => {
    return x.blockchain === 'eos';
});



Using Blockchain Wrappers

Blockchain wrappers wrap the actual blockchain libraries (eosjs, tronweb, web3, etc) that you pass in. That way you don't have to relearn any APIs or be forced to use any specific version.

You can click on the libraries here below to go directly to their respective githubs.

eosjs@16.0.9 ( @scatterjs/eosjs )

import Eos from 'eosjs';
const eos = ScatterJS.eos(network, Eos, eosjsOptions);

const result = await eos.transfer(...);

eosjs@20.0.0 ( @scatterjs/eosjs2 )

import {JsonRpc, Api} from 'eosjs'
const rpc = new JsonRpc(network.fullhost());
const eos = ScatterJS.eos(network, Api, {rpc});

const result = await eos.transact({...});

tronweb

import TronWeb from 'tronweb';
const httpProvider = new TronWeb.providers.HttpProvider(network.fullhost());
let tron = new TronWeb(httpProvider, httpProvider, network.fullhost());
tron.setDefaultBlock('latest');
tron = ScatterJS.trx(network, tron);

const result = await tron.trx.sendTransaction(...)

web3

import Web3 from 'web3';
const web3 = ScatterJS.web3(network, Web3);

const result = await web3.eth.sendTransaction(...)



NodeJS and babel/webpack issues.

If you're having trouble packaging or compiling your project you probably need to add a babel transpiler.

  • npm i -D @babel/runtime <-- run this command and it should compile.



Fetch issues.

If you're having trouble with fetch not being defined in your nodejs environment you can add it by doing

  • npm i -S isomorphic-fetch
  • and then require('isomorphic-fetch'); at the start of your application



What now?

Head over to the Scatter Developer Documentation to learn about all the amazing things you can do with Scatter.

There's also a lot more information about proper setup in the Setting up for Web Applications section which will help you get the most out of ScatterJS, and make sure you aren't exposing your users to malicious non-Scatter plugins.


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