export async function main()

in eng/tools/lint-diff/src/lint-diff.ts [12:98]
69 lines of code
10 McCabe index (conditional complexity)

export async function main() {
  let validArgs = true;
  const config: ParseArgsConfig = {
    options: {
      before: {
        type: "string",
        short: "b",
      },
      after: {
        type: "string",
        short: "a",
      },
      "changed-files-path": {
        type: "string",
        short: "c",
      },
      "out-file": {
        type: "string",
        short: "o",
        default: "lint-diff.md",
      },
      // TODO: Consider using git commands to determine this information
      "base-branch": {
        type: "string",
        short: "b",
        default: "main",
      },
      "compare-sha": {
        type: "string",
        short: "m",
        default: "main",
      },
    },
    strict: true,
  };

  const {
    values: {
      before: beforeArg,
      after: afterArg,
      "changed-files-path": changedFilesPath,
      "out-file": outFile,
      "base-branch": baseBranch,
      "compare-sha": compareSha,
    },
  } = parseArgs(config);

  // TODO: Handle trailing slashes properly
  if (!beforeArg || !(await pathExists(beforeArg as string))) {
    validArgs = false;
    console.log(`--before must be a valid path. Value passed: ${beforeArg || "<empty>"}`);
  }

  // TODO: Handle trailing slashes properly
  if (!afterArg || !(await pathExists(afterArg as string))) {
    validArgs = false;
    console.log(`--after must be a valid path. Value passed: ${afterArg || "<empty>"}`);
  }

  if (!changedFilesPath || !(await pathExists(changedFilesPath as string))) {
    validArgs = false;
    console.log("--changed-files-path missing");
  }

  if (!validArgs) {
    usage();
    process.exit(1);
  }

  // const versionResult = await executeCommand("npm exec -- autorest --version");
  // if (versionResult.error) {
  //   console.error("Error running autorest --version", versionResult.error);
  //   process.exit(1);
  // }

  // console.log("Autorest version:");
  // console.log(versionResult.stdout);

  await runLintDiff(
    beforeArg as string,
    afterArg as string,
    changedFilesPath as string,
    outFile as string,
    baseBranch as string,
    compareSha as string,
  );
}