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We shipped build system optimizations that reduce overhead for projects with many input files, large node_modules, or large build outputs.
Expensive disk operations (large file detection and folder size calculations) are no longer on the critical path for successful builds. These calculations now only run when a build fails, or when you enable the VERCEL_BUILD_SYSTEM_REPORT environment variable.
Builds complete 2.8 seconds faster on average, with larger builds seeing improvements of up to 12 seconds.
See the builds documentation for details.