How to use find-yarn-workspace-root - 6 common examples

export function getModulesPath(projectRoot: string): string {
  const workspaceRoot = findWorkspaceRoot(path.resolve(projectRoot)); // Absolute path or null
  if (workspaceRoot) {
    return path.resolve(workspaceRoot, 'node_modules');
  }

  return path.resolve(projectRoot, 'node_modules');
}

export function getModulesPath(projectRoot: string): string {
  const workspaceRoot = findWorkspaceRoot(path.resolve(projectRoot)); // Absolute path or null
  if (workspaceRoot) {
    return path.resolve(workspaceRoot, 'node_modules');
  }

  return path.resolve(projectRoot, 'node_modules');
}

const yarnLockExists = fs.existsSync(join(appRootPath, "yarn.lock"))
  if ((packageLockExists || shrinkWrapExists) && yarnLockExists) {
    if (overridePackageManager) {
      return overridePackageManager
    } else {
      printSelectingDefaultMessage()
      return shrinkWrapExists ? "npm-shrinkwrap" : "npm"
    }
  } else if (packageLockExists || shrinkWrapExists) {
    if (overridePackageManager === "yarn") {
      printNoYarnLockfileError()
      process.exit(1)
    } else {
      return shrinkWrapExists ? "npm-shrinkwrap" : "npm"
    }
  } else if (yarnLockExists || findWorkspaceRoot()) {
    return "yarn"
  } else {
    printNoLockfilesError()
    process.exit(1)
  }
  throw Error()
}

export function getPackageResolution({
  packageDetails,
  packageManager,
  appPath,
}: {
  packageDetails: PackageDetails
  packageManager: PackageManager
  appPath: string
}) {
  if (packageManager === "yarn") {
    let lockFilePath = "yarn.lock"
    if (!existsSync(lockFilePath)) {
      const workspaceRoot = findWorkspaceRoot()
      if (!workspaceRoot) {
        throw new Error("Can't find yarn.lock file")
      }
      lockFilePath = join(workspaceRoot, "yarn.lock")
    }
    if (!existsSync(lockFilePath)) {
      throw new Error("Can't find yarn.lock file")
    }
    const appLockFile = parseYarnLockFile(readFileSync(lockFilePath).toString())
    if (appLockFile.type !== "success") {
      throw new Error("Can't parse lock file")
    }

    const installedVersion = require(join(
      resolve(appPath, packageDetails.path),
      "package.json",

export function isUsingYarn(projectRoot: string): boolean {
  const workspaceRoot = findWorkspaceRoot(projectRoot);
  if (workspaceRoot) {
    return fs.existsSync(path.join(workspaceRoot, 'yarn.lock'));
  } else {
    return fs.existsSync(path.join(projectRoot, 'yarn.lock'));
  }
}

export function isUsingYarn(projectRoot: string): boolean {
  const workspaceRoot = findWorkspaceRoot(projectRoot);
  if (workspaceRoot) {
    return fs.existsSync(path.join(workspaceRoot, 'yarn.lock'));
  } else {
    return fs.existsSync(path.join(projectRoot, 'yarn.lock'));
  }
}