Huge News!Announcing our $40M Series B led by Abstract Ventures.Learn More
Socket
Sign inDemoInstall
Socket

@0xcert/ethereum-utils

Package Overview
Dependencies
Maintainers
2
Versions
72
Alerts
File Explorer

Advanced tools

Socket logo

Install Socket

Detect and block malicious and high-risk dependencies

Install

@0xcert/ethereum-utils

General Ethereum utility module with helper functions for the Ethereum blockchain.

  • 2.1.1
  • latest
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
91
increased by658.33%
Maintainers
2
Weekly downloads
 
Created
Source

General Ethereum utility module with helper functions for the Ethereum blockchain.

The 0xcert Framework is a free and open-source JavaScript library that provides tools for building powerful decentralized applications. Please refer to the official documentation for more details.

This module is one of the bricks of the 0xcert Framework. It's written with TypeScript and it's actively maintained. The source code is available on GitHub where you can also find our issue tracker.

Ethereum Utilities

This module wraps several useful Ethereum functions which will be useful through the 0xcert Framework. Currently supported are these functions and classes from ethers.js:

ABI coder

This converts the value to and from the packed Ethereum ABI encoding.

  • encodeParameters(types: any, values: Array<any>): string
  • decodeParameters(types: any, data: any): any

Encoding example:

import { decodeParameters, encodeParameters } from '0xcert/ethereum-utils/abi';

const types = ['tuple(uint256, uint256[])'];
const values = [[ 42, [ 45 ] ]];
const encodedValues = encodeParameters(types, values);

Decoding example:

import { decodeParameters, encodeParameters } from '0xcert/ethereum-utils/abi';

const types = ['tuple(uint256, uint256[])'];
const encoded = '0x' +
  '0000000000000000000000000000000000000000000000000000000000000020' +
  '000000000000000000000000000000000000000000000000000000000000002a' +
  '0000000000000000000000000000000000000000000000000000000000000040' +
  '0000000000000000000000000000000000000000000000000000000000000001' +
  '000000000000000000000000000000000000000000000000000000000000002d';
const values = decodeParameters(types, values);

Big umbers

Here is a basic example adapted from the ethers.js documentation.

import { bigNumberify } from '0xcert/ethereum-utils/big-number';

let gasPriceWei = bigNumberify("20902747399");
let gasLimit = bigNumberify(3000000);

let maxCostWei = gasPriceWei.mul(gasLimit)
console.log("Max Cost: " + maxCostWei.toString());
// "Max Cost: 62708242197000000"

console.log("Number: " + maxCostWei.toNumber());
// throws an Error, the value is too large for JavaScript to handle safely

Address normalization

The ethers.js address normalization function implements EIP-55 Mixed-case checksum address encoding.

import { getAddress } from '0xcert/ethereum-utils/normalize-address';

let zxcTokenAddress = '0x83e2be8d114f9661221384b3a50d24b96a5653f5';
let zxcTokenAddressNormalized = normalizeAddress(zxcToenAddress);
// 0x83e2BE8d114F9661221384B3a50d24B96a5653F5

Keywords

FAQs

Package last updated on 15 Mar 2021

Did you know?

Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap
  • Changelog

Packages

npm

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc