7 Infra Improvement Strategies to Prevent Next.js Deployment Build Failures in 2026
Recently, our team's deployment pipeline started showing serious instability. Specifically, we encountered recurring build failures related to the chat build. As a result, the entire development team was preoccupied with battling these build failures.
Attempts and Pitfalls
Initially, I thought the --preload detection logic was the problem. I modified it to detect only specific lines, but this ended up causing issues in other areas. The recurring chat build failures were actually caused by the next.config file not properly recognizing file extensions. I modified it to allow extensions like .mjs, .js, .ts, and .cjs, but even that didn't work correctly at first, leading to some wasted effort.
# .github/workflows/deploy.yml (Excerpt from initial version)
