@rainbow-me/fee-suggestions NPM

🔥 EIP-1559 Fee Suggestions 🔥

The function suggestFees() is a utility function written in Javascript and it's intended to use with an ethers.js provider.

It returns an object containing:

maxBaseFee and maxPriorityFee suggestions
baseFeeTrend indicator
currentBaseFee which is the current block base fee
confirmationTimeByPriorityFee an object containing estimated times of confirmation by priority fee chosen
blocksToConfirmationByPriorityFee an object containing estimated blocks of wait for a confirmation by priority fee chosen
blocksToConfirmationByBaseFee an object containing estimated blocks of wait for a confirmation by base fee chosen

Usage

import { JsonRpcProvider } from '@ethersproject/providers';
import { suggestFees } from './src';

const main = async() => {
    const provider = new JsonRpcProvider(`https://ropsten.infura.io/v3/${YOUR_API_KEY}`);
    const ret = await suggestFees(provider);
    console.log('Result: ', ret);
}

main();

In addition, you can use specific methods to get maxBaseFee and maxPriorityFee specific data.

import { JsonRpcProvider } from '@ethersproject/providers';
import { suggestFees } from './src';

const main = async() => {
    const provider = new JsonRpcProvider(`https://ropsten.infura.io/v3/${YOUR_API_KEY}`);
    const fromBlock = 'latest' // the block that you want to run the estimations from
    const blockCountHistory = 100 // the quantity of blocks you want to take in account for the estimation
    const ret = await suggestMaxBaseFee(provider, fromBlock, blockCountHistory);
    console.log('Result: ', ret);
}

main();

import { JsonRpcProvider } from '@ethersproject/providers';
import { suggestFees } from './src';

const main = async() => {
    const provider = new JsonRpcProvider(`https://ropsten.infura.io/v3/${YOUR_API_KEY}`);
    const fromBlock = 'latest' // the block that you want to run the estimations from
    const ret = await suggestMaxPriorityFee(provider, fromBlock, blockCountHistory);
    console.log('Result: ', ret);
}

main();