File compareImages.mjs

test/performance/compareImages.mjs:None–None

// Compares two directories of rendered PNGs (baseline vs new) pixel-wise.
// Usage: node test/performance/compareImages.mjs <dirA> <dirB> [diffThreshold] [maxDiffImages]
// Writes red-overlay diff images for the worst offenders next to dirB as *_DIFF.png.
import FS from "fs";