From 9c22d7c5afddd6cb17ff1c61d3ed84a29655167e Mon Sep 17 00:00:00 2001
From: ful1e5 <24286590+ful1e5@users.noreply.github.com>
Date: Sat, 29 Aug 2020 10:30:32 +0530
Subject: [PATCH] =?UTF-8?q?=F0=9F=94=A3=20Bitmaps=20matcher?=
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---
 src/utils/matchImages.ts | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/utils/matchImages.ts b/src/utils/matchImages.ts
index c7c6d0f..690d782 100644
--- a/src/utils/matchImages.ts
+++ b/src/utils/matchImages.ts
@@ -1,14 +1,22 @@
 import fs from "fs";
+import path from "path";
 import { PNG } from "pngjs";
 import pixelmatch from "pixelmatch";
 
-export const matchImages = (img1Path: string, img2Path: string) => {
-  const img1 = PNG.sync.read(fs.readFileSync(img1Path));
-  const img2 = PNG.sync.read(fs.readFileSync(img2Path));
+export const matchImages = (img1Buff: Buffer, img2Buff: Buffer) => {
+  const img1 = PNG.sync.read(img1Buff);
+  const img2 = PNG.sync.read(img2Buff);
   const { width, height } = img1;
+
   const diff = new PNG({ width, height });
 
-  return pixelmatch(img1.data, img2.data, diff.data, width, height, {
+  const out = pixelmatch(img1.data, img2.data, diff.data, width, height, {
     threshold: 0.3,
   });
+
+  fs.writeFileSync(
+    path.resolve(process.cwd(), "diff", `${out}.png`),
+    diff.data
+  );
+  return out;
 };