async function getPrSha()

in vsts/src/utils.ts [213:246]

• 23 lines of code
• 7 McCabe index (conditional complexity)

async function getPrSha(): Promise<string> {
  if (process.env.QODANA_PR_SHA) {
    return process.env.QODANA_PR_SHA
  }
  const {sourceBranch, targetBranch} = getSourceAndTargetBranches()

  if (sourceBranch && targetBranch) {
    try {
      await git(['fetch', 'origin'], true)
      const output = await gitOutput(
        ['merge-base', 'origin/' + sourceBranch, 'origin/' + targetBranch],
        false,
        {
          ignoreReturnCode: true
        }
      )
      if (output.exitCode === 0) {
        return output.stdout.trim()
      }
    } catch (error) {
      const message = `Failed to get PR SHA for source branch ${sourceBranch} and target branch ${targetBranch}.
The analysis would be performed with disabled prMode.

Cause:
${(error as Error).message}

To enable prMode, consider adding "fetchDepth: 0".`

      tl.error(message)
      return ''
    }
  }
  return ''
}