nyc

c8 vs nyc: Should You Switch? 4.2s vs 7.4s

c8 12.0.0 vs nyc 18.0.0 on 80 CommonJS modules / 480 mocha tests: coverage-run median 4222 ms vs 7415 ms (~1.76x; no-coverage baseline 1734 ms). Same code, different totals: branches 81.3% (c8) vs 47.9% (nyc).