preprocess-data.js

const fs = require('fs');

async function main() {
  const files = fs.readdirSync('./data');
  const data = files.filter(file => file.endsWith('.json')).sort().map(file => {
    const parts = file.split('-');
    if (parts.length === 1) {
      parts.unshift('firefox');
    }
    parts[1] = parts[1].split('.').shift();
    const [browser, timestamp] = parts;
    const stats = JSON.parse(fs.readFileSync('./data/' + file, 'utf-8')).stats;
    // Since few tests are supported we don't report the skipped tests to make
    // sure the chart is readable.
    const counts = {
      
      passing: stats.passes,
      failing: stats.failures,
      skipping: 0, // stats.pending,
      total: stats.tests,
    }
    counts.unsupported = 0; // counts.total - (counts.passing + counts.failing + counts.skipping);
    return {
      browser,
      date: Number(timestamp) * 1000,
      counts,
    }
  });
  const groupByDate = new Map();
  for (const item of data) {
    if (!groupByDate.has(item.date)) {
      groupByDate.set(item.date, []);
    }
    groupByDate.get(item.date).push(item);
  }
  const mappedData = [];
  for (const date of Array.from(groupByDate.keys()).sort()) {
    mappedData.push({
      date,
      chromeCounts: groupByDate.get(date).find(item => item.browser === 'chrome')?.counts || {passing: 0, failing: 0, skipping: 0, total: 0, unsupported: 0},
      firefoxCounts: groupByDate.get(date).find(item => item.browser === 'firefox')?.counts || {passing: 0, failing: 0, skipping: 0, total: 0, unsupported: 0},
      // TODO: extend the object here for more browsers.
    });
  }
  fs.writeFileSync('data.json', JSON.stringify(mappedData, null, 2));
  console.log(mappedData);
}

main();