swapnet-sdk-test-4/dist/routers/universalRouter/fewTokenHelper.js

TypeScript SDK for SwapNet API.

import { keccak256, AbiCoder } from "ethers";
const fewFactoryAddress = "0x455b20131d59f01d082df1225154fda813e8cee9";
const fewWrappedTokenInitCodeHash = "0x075ca97923eddedb5953d92e6c55afa2e88b47caaa7f96d34cc2855679931447";
export const getFewWrappedTokenAddress = (originalTokenAddress)=>{
    const constructorArgumentsEncoded = AbiCoder.defaultAbiCoder().encode([
        'address'
    ], [
        originalTokenAddress
    ]);
    const create2Inputs = [
        '0xff',
        fewFactoryAddress,
        // salt
        keccak256(constructorArgumentsEncoded),
        // init code. bytecode + constructor arguments
        fewWrappedTokenInitCodeHash
    ];
    const sanitizedInputs = `0x${create2Inputs.map((i)=>i.slice(2)).join('')}`;
    return `0x${keccak256(sanitizedInputs).slice(-40)}`.toLowerCase();
};