@pulsechainorg/gas-estimation
v1.1.7
Published
The fork of MyCrypto EIP 1559 gas estimation strategy for PulseChain.
Downloads
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Readme
gas-estimation
EIP-1559 gas estimation library, using the estimation strategy of MyCrypto. The library does not depend on a third-party API but rather fetches the historic data (for the latest 10 blocks) from a regular Ethereum node directly.
Getting Started
The library is published on npm. To install it, you can use npm
or yarn
:
yarn add @pulsechainorg/gas-estimation
or
npm install @pulsechainorg/gas-estimation
Example
import { estimateFees } from '@pulsechainorg/gas-estimation';
// Estimation using a JSON-RPC endpoint.
// Web3.js, Ethers.js and EIP-1193 providers are also supported, see the documentation.
const { maxFeePerGas, maxPriorityFeePerGas } = await estimateFees('http://127.0.0.1:8545');
console.log(maxFeePerGas, maxPriorityFeePerGas);
API
The library exposes a function to estimate gas fees based on the latest 10 blocks, and the underlying function used to calculate the estimate.
estimateFees(provider)
provider
- A Web3 instance, Ethers.js provider, JSON-RPC endpoint, or EIP-1193 compatible provider.- Returns: <Promise<EstimationResult>> - An object containing the estimated
maxFeePerGas
,maxPriorityFeePerGas
, andbaseFee
, asbigint
(all values in Wei).
calculateFees(baseFee, feeHistory)
baseFee
- The current base fee as abigint
(in Wei).feeHistory
- The fee history object returned by a node when callingeth_feeHistory
.- Returns: <EstimationResult> - An object containing the estimated
maxFeePerGas
,maxPriorityFeePerGas
, andbaseFee
, asbigint
(all values in Wei).
Providers
Currently, gas-estimation has support for four different providers:
- Ethers.js, by using an existing Ethers.js provider.
- Web3, by using an instance of the Web3 class.
- HTTP, by using a URL of a JSON-RPC endpoint as string.
- EIP-1193 compatible provider, like
window.ethereum
.
Contributing
If you found a bug, have a suggestion or want to contribute in any other way, feel free to open an issue or submit a pull request. Any contributions are highly appreciated.
Compatibility
gas-estimation
uses ES6+ functionality, which may not be supported on all platforms. If you need compatibility with older browsers or Node.js versions, you can use something like Babel.
There is an ES compatible version available, which should work with module bundlers like Webpack and Rollup.