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documenso/benchmarks/lint-format-migration.md
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# Linter & Formatter Migration Benchmark
## Environment
- Node: v24.12.0
- Machine: arm64 / Apple M4
- Codebase: ~3520 source files
## Before (ESLint + Prettier)
| Tool | Run 1 | Run 2 | Run 3 | Median |
| ---------------- | ------ | ------ | ------ | ----------- |
| ESLint (check) | 86.22s | 96.85s | 67.77s | 86.22s |
| Prettier (check) | 19.46s | 19.49s | 20.90s | 19.49s |
| **Total** | | | | **105.71s** |
## After (oxlint + oxfmt)
| Tool | Run 1 | Run 2 | Run 3 | Median |
| --------------------------- | ------ | ------ | ------ | ---------- |
| oxlint (check) | 0.99s | 0.72s | 1.03s | 0.99s |
| oxlint --type-aware (check) | 13.62s | 11.56s | 10.01s | 11.56s |
| oxfmt (check) | 3.48s | 3.28s | 3.61s | 3.48s |
| **Total** | | | | **16.03s** |
## Speedup
| Metric | Before | After | Speedup |
| ------ | ------- | ------------------- | -------- |
| Lint | 86.22s | 11.56s (type-aware) | 7.5x |
| Format | 19.49s | 3.48s | 5.6x |
| Total | 105.71s | 16.03s | **6.6x** |
Note: oxlint without --type-aware runs in ~1s (87x faster than ESLint).
Type-aware mode is used in CI/turbo lint; pre-commit uses fast mode only.