Sandbox::https://github.com/nodejs/node/blob/main/tools/merge-wpt-reports.mjs

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import * as fs from 'node:fs';

import * as path from 'node:path';

import * as url from 'node:url';

const __dirname = path.dirname(url.fileURLToPath(import.meta.url));

const outDir = path.resolve(__dirname, '../out/wpt');

const files = fs.readdirSync(outDir);

const reports = files.filter((file) => file.endsWith('.json'));

const startTimes = [];

const endTimes = [];

const results = [];

let runInfo;

for (const file of reports) {

const report = JSON.parse(fs.readFileSync(path.resolve(outDir, file)));

fs.unlinkSync(path.resolve(outDir, file));

results.push(...report.results);

startTimes.push(report.time_start);

endTimes.push(report.time_end);

runInfo ||= report.run_info;

}

const mergedReport = {

time_start: Math.min(...startTimes),

time_end: Math.max(...endTimes),

run_info: runInfo,

results,

};

fs.writeFileSync(path.resolve(outDir, 'wptreport.json'), JSON.stringify(mergedReport));