Nodejs Keccak256
affaan-m/eccEthereum developers often make a silent but serious mistake. They use Node's built-in sha3-256 hash function. But that is not the same as Ethereum's Keccak-256. The two algorithms give different results for the same input. Node will not warn you. This can break function selectors, signatures, storage slots, and address generation.
This skill gives you the right code for Keccak-256 in JavaScript and TypeScript. It works with popular Ethereum libraries like ethers, viem, and web3.js. It also shows how to audit your existing codebase for this bug. Use it to keep your Ethereum projects safe and correct.
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