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feat: use blazediff instead of pixelmatch #603

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feat: use blazediff instead of pixelmatch #603

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07bd824
feat: use blazediff instead of pixelmatch
teimurjan Sep 11, 2025
08b2dde
feat: update to latest stable version
teimurjan Sep 12, 2025
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2 changes: 1 addition & 1 deletion NOTICE
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Original file line number Diff line number Diff line change
Expand Up @@ -1165,7 +1165,7 @@ fetch-blob under the MIT license.
node-domexception under the MIT license.
web-streams-polyfill under the MIT license.
formdata-polyfill under the MIT license.
pixelmatch under the ISC license.
blazediff under the MIT license.
vite-plugin-eslint2 under the MIT license.
@types/eslint under the MIT license.
@types/json-schema under the MIT license.
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31 changes: 17 additions & 14 deletions source/frontend/package-lock.json
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2 changes: 1 addition & 1 deletion source/frontend/package.json
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Expand Up @@ -14,6 +14,7 @@
"@babel/plugin-transform-runtime": "^7.9.6",
"@babel/preset-env": "^7.8.7",
"@babel/preset-react": "^7.8.3",
"@blazediff/core": "^1.0.0",
"@testing-library/jest-dom": "^6.4.2",
"@testing-library/react": "^14.2.1",
"@testing-library/user-event": "^14.5.2",
Expand All @@ -30,7 +31,6 @@
"jsdom": "^22.1.0",
"msw": "^2.4.9",
"node-fetch": "^3.3.1",
"pixelmatch": "^7.1.0",
"playwright": "^1.51.1",
"pngjs": "^7.0.0",
"prettier": "^3.0.0",
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8 changes: 4 additions & 4 deletions source/frontend/src/tests/vitest/commands/screenshot.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@

import {promises as fs} from 'node:fs';
import path from 'node:path';
import pixelmatch from 'pixelmatch';
import blazediff from '@blazediff/core';
import {PNG} from 'pngjs';

/**
Expand All @@ -30,7 +30,7 @@ export const compareScreenshot = async (context, screenshotPath, options) => {
testName,
baselineDir = `${testDir}/__image_snapshots__`,
diffDir = `${testDir}/__image_diffs__`,
threshold = 0.1, // recommended default in pixelmatch docs
threshold = 0.1, // recommended default in blazediff docs
maxDiffPercentage = 1.0,
updateBaseline = process.env.UPDATE_SNAPSHOTS === 'true',
} = options;
Expand Down Expand Up @@ -73,12 +73,12 @@ export const compareScreenshot = async (context, screenshotPath, options) => {
};
}

// Create empty diff image buffer (pixelmatch will mutate this buffer to store the diff)
// Create empty diff image buffer (blazediff will mutate this buffer to store the diff)
const {width, height} = img1;
const diff = new PNG({width, height});

// Compare images
const numDiffPixels = pixelmatch(
const numDiffPixels = blazediff(
img1.data,
img2.data,
diff.data,
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