Function compareBuildAppSize

scripts/compareSize.js:17–84

()

// Compares the example test app build size and the verdaccio published package sizes to the last release
async function compareBuildAppSize() {
  // Get the commit before the last publish commit
  let res = await octokit.search.commits({q: 'Publish repo:adobe/react-spectrum'});
  let {items} = res.data;
  let commit = items && items[0]?.parents[0]?.sha;

  if (commit) {
    // Attempt to pull stats from last publish commit. If they don't exist, pull from a hardcoded commit (fallback until these records are generated for a first publish w/ this script)
    let lastAppStatUrl = `https://reactspectrum.blob.core.windows.net/reactspectrum/${commit}/verdaccio/rsp-cra-18/publish-stats/${currentAppStatsFile}`;
    let lastPublishStatUrl = `https://reactspectrum.blob.core.windows.net/reactspectrum/${commit}/verdaccio/rsp-cra-18/publish-stats/${currentPublishStatsFile}`;
    let lastAppStatPath = path.join(__dirname, '..', lastAppStatsFile);
    let lastPublishStatPath = path.join(__dirname, '..', lastPublishStatsFile);
    await download(lastAppStatUrl, lastAppStatPath);
    await download(lastPublishStatUrl, lastPublishStatPath);

    if (!fs.existsSync(lastAppStatPath)) {
      // TODO: placeholder until we get some real stats. Hardcoded URL pointing to a commit with actual data
      await download(
        `https://reactspectrum.blob.core.windows.net/reactspectrum/2504f8ad927d0d0ad55e7e6db8a22fec16a67b6f/verdaccio/publish-stats/${currentAppStatsFile}`,
        lastAppStatPath
      );
    }

    if (!fs.existsSync(lastPublishStatPath)) {
      await download(
        `https://reactspectrum.blob.core.windows.net/reactspectrum/2504f8ad927d0d0ad55e7e6db8a22fec16a67b6f/verdaccio/publish-stats/${currentPublishStatsFile}`,
        lastPublishStatPath
      );
    }

    // Extract the built example app size from the current commit and the last publish commit data
    let lastAppStats = fs.readFileSync(lastAppStatsFile, 'utf8');
    let currentAppStats = fs.readFileSync(currentAppStatsFile, 'utf8');
    let regex = /(.*)\tbuild\/\n$/;
    let lastAppSize = lastAppStats.match(regex)[1];
    let currentAppSize = currentAppStats.match(regex)[1];
    fs.writeFileSync(
      'size-diff.txt',
      `Built app size diff from last publish: ${(currentAppSize - lastAppSize).toFixed(2)} kB`
    );

    let lastPackageStats = JSON.parse(fs.readFileSync(lastPublishStatsFile));
    let currentPackageStats = JSON.parse(fs.readFileSync(currentPublishStatsFile));
    let stream = fs.createWriteStream('size-diff.txt', {flags: 'a'});
    stream.write('\n');
    stream.write(
      '\nPublished package size differences from last publish in kB (old, new, diff). Packages with size differences less than .01kB are omitted.'
    );
    for (let pkg of Object.keys(currentPackageStats)) {
      // For each package grab the size from the last and current package stats data
      let currentSize = pkg in currentPackageStats && currentPackageStats[pkg];
      let lastSize = pkg in lastPackageStats && lastPackageStats[pkg];
      if (!lastSize) {
        lastSize = 0;
      }

      let diff = (currentSize - lastSize).toFixed(2);
      if (Math.abs(diff) > 0) {