@cinaconnect/gas-estimator

Gas estimation for EVM (EIP-1559 + legacy) and Solana compute budget transactions. Includes caching, fee history analysis, and price prediction.

Installation

npm install @cinaconnect/gas-estimator

Usage

EVM Gas Estimation

import { GasEstimator } from '@cinaconnect/gas-estimator';

const estimator = new GasEstimator();

// EIP-1559 estimation
const evm = await estimator.estimateEvm(
  21000n,       // gas limit
  20_000_000_000n,  // base fee
  2_000_000_000n,   // priority fee
);
console.log(evm.estimatedCost);

// Gas price prediction
const history = await estimator.getFeeHistory(3);
const prediction = await estimator.predictGasPrices(20_000_000_000n, history);
console.log(prediction.fast); // { maxFeePerGas, maxPriorityFeePerGas, estimatedTime }

Solana Compute Budget

// Solana compute budget estimation
const sol = await estimator.estimateSolana(200_000, 1000n);
console.log(sol.estimatedCost); // total in lamports

API

GasEstimator

| Method | Description | |--------|-------------| | estimateEvm(gasLimit, baseFee, priorityFee) | Estimate EIP-1559 gas | | estimateSolana(computeUnits?, unitPrice?) | Estimate Solana compute budget | | getGasPrice(rpcUrl) | Get current gas price | | getFeeHistory(blockCount?) | Get fee history | | predictGasPrices(baseFee, history) | Predict price tiers (slow/standard/fast) | | clearCache() | Clear cached gas data |

License

MIT