@backstage/cli/dist/cjs/index/yarn-8315d2ff.cjs.js

CLI for developing Backstage plugins and apps

'use strict';

var errors = require('@backstage/errors');
var child_process = require('child_process');
var util = require('util');

const execFile = util.promisify(child_process.execFile);
const versions = /* @__PURE__ */ new Map();
function detectYarnVersion(dir) {
  const cwd = dir != null ? dir : process.cwd();
  if (versions.has(cwd)) {
    return versions.get(cwd);
  }
  const promise = Promise.resolve().then(async () => {
    try {
      const { stdout } = await execFile("yarn", ["--version"], {
        shell: true,
        cwd
      });
      return stdout.trim().startsWith("1.") ? "classic" : "berry";
    } catch (error) {
      errors.assertError(error);
      if ("stderr" in error) {
        process.stderr.write(error.stderr);
      }
      throw new errors.ForwardedError("Failed to determine yarn version", error);
    }
  });
  versions.set(cwd, promise);
  return promise;
}

exports.detectYarnVersion = detectYarnVersion;
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