Function main

scripts/compare-main-to-patch.js:151–187

()

// Main program
function main() {
  execGitCommand('git fetch upstream');

  // Extract tags information and pick the most recent version
  // that we'll use later to compare with main.
  const tags = toArray(execGitCommand('git tag'));
  const latestTag = getLatestTag(tags);

  // Based on the latest tag, generate the name of the patch branch.
  const branch = getBranchByTag(latestTag);

  // Extract main-only and patch-only commits using `git log` command.
  const mainCommits = execGitCommand(
    `git log --cherry-pick --oneline --right-only upstream/${branch}...upstream/main`,
  );
  const patchCommits = execGitCommand(
    `git log --cherry-pick --oneline --left-only upstream/${branch}...upstream/main`,
  );

  // Post-process commits and convert raw data into a Map, so that we can diff it easier.
  const mainCommitsMap = collectCommitsAsMap(mainCommits);
  const patchCommitsMap = collectCommitsAsMap(patchCommits);

  // tslint:disable-next-line:no-console
  console.log(`
Comparing branches "${branch}" and main.

***** Only in MAIN *****
${diff(mainCommitsMap, patchCommitsMap).join('\n') || 'No extra commits'}

***** Only in PATCH (${branch}) *****
${diff(patchCommitsMap, mainCommitsMap).join('\n') || 'No extra commits'}

***** Features in PATCH (${branch}) - should always be empty *****
${listFeatures(patchCommitsMap).join('\n') || 'No extra commits'}
`);
}

main();