@generationsoftware/js-winner-calc
v1.2.1
Published
Calculates PoolTogether V5 winners in JavaScript.
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PoolTogether JS Winner Calculator
This library calculates PoolTogether V5 winners completely in JavaScript for use in NodeJS or in a browser.
Installation
This library is installable as an NPM package using the following command:
npm i @generationsoftware/js-winner-calc
How to Calculate Winners for a Vault
[!Important] This script batches RPC queries for a given vault, so you'll need to run it for each vault that you want to check prizes for. If you are querying results for many users, it is recommended to use a private RPC endpoint to avoid public rate limits.
import { computeWinners } from "@generationsoftware/js-winner-calc";
const winners = await computeWinners({
chainId: 10,
rpcUrl: "https://mainnet.optimism.io/",
prizePoolAddress: "0xF35fE10ffd0a9672d0095c435fd8767A7fe29B55",
vaultAddress: "0xa52e38a9147f5eA9E0c5547376c21c9E3F3e5e1f",
userAddresses: ["0xe24bC6c67fEF2FFe40283c1359dCE44bd19c72C4"],
})
The results will look like the following, with an array of winners and a mapping of prize tier to prize indices for each winner:
[
{
"user": "0xe24bC6c67fEF2FFe40283c1359dCE44bd19c72C4",
"prizes": {
"4": [
11
],
"5": [
451,
685,
941
]
}
}
]
Optional Arguments
prizeTiers
Enables the calculation to be limited to only the listed prize tiers. Calculating wins for lower tiers only can significantly speed up the calculation. If this list is not passed to the function call, all active tiers will be computed.
[!Note] There is no validation of the tier numbers provided.
Example:
const winners = await computeWinners({
...,
prizeTiers: [0,1,5]
})
multicallBatchSize
Set the multicallBatchSize
argument in the input json file to limit multicall size (in bytes) for RPC calls. Different RPCs may have harsher limits than others.
Example:
const winners = await computeWinners({
...,
multicallBatchSize: 2048
})
multicallAddress
Set the multicallAddress
argument in the input json file to use a custom Multicall contract for RPC calls.
Example:
const winners = await computeWinners({
...,
multicallAddress: '0xcA11bde05977b3631167028862bE2a173976CA11' // Gnosis Chiado testnet Multicall3 address
})
blockNumber
The blockNumber
argument can be set to run the script at a specific block number instead of the current block. Must be either a number or string that can be parsed into a BigInt
.
Example:
const winners = await computeWinners({
...,
blockNumber: 121970626n
})
debug
The debug
argument is an optional boolean. When set, some extra logs will be included to help debug issues.
Example:
const winners = await computeWinners({
...,
debug: true
})
Local Development
- clone this repo
- run
npm i
- run
npm run dev