将 util.promisify 与 exec 一起使用未解决 git 挂钩中的承诺

Using util.promisify with exec is not resolving promise in git hook

根据 docs,您可以通过执行以下操作来 promisify NodeJS' require('child_process').exec

const util = require('util');
const exec = util.promisify(require('child_process').exec);

async function lsExample() {
  const { stdout, stderr } = await exec('ls');
  console.log('stdout:', stdout);
  console.error('stderr:', stderr);
}
lsExample();

然而,当我在 'prepare-commit-msg' git 钩子中使用这种方法来获取当前分支名称时,stdout 常量是一个 promise 对象,而不是分支名称值,因为我期待。我错过了什么吗?

const util = require('util');
const stdExec = require('child_process').exec;
const exec = util.promisify(stdExec);

async function getBranchName() {
  const { err, stdout, stderr } = await exec('git rev-parse --abbrev-ref HEAD');

  console.log(err, stdout, stderr); // Returns correct stdout

  if (err) {
    // "git branch" will fail if initial commit hasn't been done, in that case, skip this hook
    process.exit(0);
  }

  return stdout;
}

function validateBranchName(name) {
    console.log(name);
)

// Call get branchName
if(condition) {
    const branchName = getBranchName(); // branchName is promise object

    validateBranchName(branchName);
}

我通过将调用函数的位置重构为另一个异步函数来修复此问题:

const util = require('util');
const stdExec = require('child_process').exec;
const exec = util.promisify(stdExec);

async function getBranchName() {
  const { err, stdout, stderr } = await exec('git rev-parse --abbrev-ref HEAD');

  console.log(err, stdout, stderr);

  if (err) {
    // "git branch" will fail if initial commit hasn't been done, in that case, skip this hook
    process.exit(0);
  }

  return stdout;
}

function validateBranchName(name) {
    console.log(name);
)

function async prepareCommitMsg() {
    const branchName = await getBranchName();

    validateBranchName(branchName);
}

// Call get branchName
if(condition) {
    prepareCommitMsg().then(() => {console.log('DONE!')});
}