Web3.js

What should developers avoid when building with Web3.js in 2026?

The question is about Web3.js .

Answer:
Developers should avoid using Web3.js for new projects in 2026 - ethers.js v6 and viem offer better TypeScript support, smaller bundle sizes, and more active maintenance. Avoid storing sensitive data or complex business logic in smart contracts that interact with Web3.js frontends - keep on-chain logic minimal and gas-efficient. Do not connect Web3.js frontends to mainnet contracts without completing full testnet deployment and security review phases.

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