Function commitsHaveDiff

src/create-or-update-branch.ts:129–151

(
  git: GitCommandManager,
  branch1: string,
  branch2: string,
  depth: number
)

// Return true if the specified number of commits on branch1 and branch2 have a diff
async function commitsHaveDiff(
  git: GitCommandManager,
  branch1: string,
  branch2: string,
  depth: number
): Promise<boolean> {
  // Some action use cases lead to the depth being a very large number and the diff fails.
  // I've made this check optional for now because it was a fix for an edge case that is
  // very rare, anyway.
  try {
    const diff1 = (
      await git.exec(['diff', '--stat', `${branch1}..${branch1}~${depth}`])
    ).stdout.trim()
    const diff2 = (
      await git.exec(['diff', '--stat', `${branch2}..${branch2}~${depth}`])
    ).stdout.trim()
    return diff1 !== diff2
  } catch (error) {
    core.info('Failed optional check of commits diff; Skipping.')
    core.debug(utils.getErrorMessage(error))
    return false
  }
}

function splitLines(multilineString: string): string[] {
  return multilineString