Codecall.js

Codecall.js can compile the solidity code in the js project, execute it remotely on the node and return the result.

This can help us reduce the number of RPC requests. In addition to providing a parallel request function similar to Multicall, it also supports serial calls.

This project contains smart contract and client.

Codecall Contract Addresses

Chain	Address
BSC	0xBF4b1bE1F00F5624ba4D65f8548ccF6E75d0deFe
Polygon	0xBF4b1bE1F00F5624ba4D65f8548ccF6E75d0deFe
HECO	0x6427169aB7344F9C37E9dC9001c681BEcd09343d

Summary

• Write local solidity and compile into bytecode
• Through RPC, send bytecode to the Caller contract and execute it
• Get the data returned by the execution and decode it

Installation

Step1: Install SDK

yarn add @chainstarter/codecall.js

or

 npm install --save @chainstarter/codecall.js

Step2: Copy Worker to static folder

// webpack CopyWebpackPlugin
const CopyWebpackPlugin = require('copy-webpack-plugin');
const webpackConfig = {
  plugins : [
      ...,
      new CopyWebpackPlugin([ // add plugin
        {
          from: 'node_modules/@chainstarter/codecall.js/dist/codecall.worker.js',
          to: 'codecall.worker.js'
        }
      ])
  ]
}

Usage

Web

import {Client}  from '@chainstarter/codecall.js'
client = new Client()

const code = `
        contract Request {
            function exec() public returns (uint a, uint b, uint c){
                a = 10;
                b = 1000;
                c = a + b;
            }
        }
    `
// call and print data
client.call(code).then(console.log)

Add custom chain

import { Client } from '@chainstarter/codecall.js';
client = new Client()
client.addChain(4399,
  {
    address: '0xBF4b1bE1F00F5624ba4D65f8548ccF6E75d0deFe', // You can publish the contract on other chains by yourself
    rpc: "{{RPC}}" // The node rpc address
  })

Set default chain

import { Client } from '@chainstarter/codecall.js';
client = new Client()
// set default chain
client.setDefaultChainId(4399)

Nodejs

const {call} = require('@chainstarter/codecall.js/dist/node')
// call data
call(`
        contract Request {
            function exec() public returns (uint a, uint b){
                a = 10;
                b = 1000;
            }
        }
`).then(console.log)