@phiresky/eth-scan
Version:
An efficient Ether and token balance scanner
34 lines • 2.09 kB
JavaScript
import{decode,toNumber}from"@findeth/abi";import{BATCH_SIZE,CONTRACT_ADDRESS}from"./constants";import{call}from"./providers";import{batch}from"./utils";const isResult=a=>Array.isArray(a)&&2===a.length;/**
* Get a balance map from an array of addresses and an array of balances.
*
* @param {string[]} addresses
* @param {bigint[]} results
* @return {BalanceMap}
*/export const toBalanceMap=(a,b)=>{const c={};for(const[d,e]of b.entries()){const b=isResult(e)?toNumber(e[1].slice(0,32)):e;c[a[d]]=b}return c};/**
* Get a nested balance map from an array of addresses, token addresses, and results.
*
* @param {string[]} addresses
* @param {bigint[]} tokenAddresses
* @param {BalanceMap<BalanceMap>} results
*/export const toNestedBalanceMap=(a,b,c)=>{const d={};for(const[e,f]of c.entries())d[a[e]]=toBalanceMap(b,f);return d};/**
* Low level API function to send a contract call that returns a single Result array. It will automatically retry any
* failed calls.
*
* @param provider
* @param batchAddresses The addresses to batch by
* @param addresses The address(es) to use when retrying failed calls
* @param contractAddresses The contract address(es) to use when retrying failed calls
* @param encodeData
* @param encodeSingle
* @param options
*/export const callSingle=async(a,b,c,d,e,f,g)=>{var h,i;const j=null!==(h=null===g||void 0===g?void 0:g.contractAddress)&&void 0!==h?h:CONTRACT_ADDRESS,k=null!==(i=null===g||void 0===g?void 0:g.batchSize)&&void 0!==i?i:BATCH_SIZE,l=await batch(async b=>{const c=e(b),d=await call(a,j,c);return decode(["(bool,bytes)[]"],d)[0]},k,b);return retryCalls(a,c,d,l,f)};/**
* Retry calls to the contract directly, if a contract call in the eth-scan contract failed.
*
* @param provider
* @param addresses
* @param contracts
* @param results
* @param encodeData
*/export const retryCalls=async(a,b,c,d,e)=>Promise.all(d.map(async(d,f)=>{if(d[0])return d;const g="string"==typeof b?b:b[f],h="string"==typeof c?c:c[f],i=e(g);try{const b=await call(a,h,i);return[!0,b]}catch{// noop
}return d}));
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