Node.js util to watch your (or someone else) profit/loss on Uniswap market in real time.
uniclient2.js is rewritten from scratch, using ethers.js instead of web3.js (so you have to install ethers.js). It reads logs from Ethereum node in batches, so it works with Infura and other similar services.
There's experimental fees calculation. I'm not 100% if it's done in a correct way. Fees are displayed as "Max profit", and calculated in ETH using last TOKEN/ETH ratio from the same exchange. Also total pool fees are calculated.
Edit file to add your ETH address and two nodes (which can can be the same)
const myAddress = ''; // put your address here
let providerCurrent = new ethers.providers.JsonRpcProvider(''); //provider for current blocks, has to keep at least biteSize blocks
let providerArchive = new ethers.providers.JsonRpcProvider(''); //provider for "old" blocks
You can also set biteSize constant to lower value if your node can't keep up with the requests volume. Default is too high for Infura.
./node uniswap2.js TOKEN
- Rate (for BUY/SELL) - the rate at which last swap was executed
- Liquidity - total ETH/TOKEN in pool
- Pool rate: current rate
- Pool fees: total fees collected by all liquidity providers (experimental!)
- Deposited: total deposited - total witdrawn.
- Share: current share in pool
- Max Profit: profit from fees, see above (experimental!)
- Current P/L: current profit or loss.
Keep in mind that eg. Current P/L is calculated even if someone no longer has any share in liquidity and changes when TOKEN/ETH ratio changes. The same applies to Max profit (in ETH).
- Wrong outputs if someone has 100% share in pool. To be fixed.
- Doesn't handle reorgs well, so you should restart it from time to time to get accurate results
IANAD (I'm not a developer), so use with care.