Array.push 不是 Promise 内部的函数 [关闭]

Question

以下代码块遇到此错误。你可以看到我在async 函数内部实例化了report = []，但在我运行async Promise.all 之前。在该承诺内部，我运行了一些处理，该处理应该获取数据并将其推回到承诺范围之外的report 数组中。我尝试从const 更改为let，并将Promise.all 放入try/catch 块中，但总是得到相同的错误...

完全错误：

TypeError: report.push(...) is not a function
(node:2568) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)

代码：

(async (env) => {
  const report        = []
  const subscriptions = await xm.subscriptions.getMany(env);

  await Promise.all(subscriptions.map(sub => {
    let apps_and_lobs = xm.subscriptions.process_apps_and_lobs(sub.criteria.data);
    let sub_obj = {
      sub_name         : sub.name,
      sub_uuid         : sub.id,
      form_name        : sub.form.name,
      form_id          : sub.form.id,
      plan_name        : sub.form.plan.name,
      plan_id          : sub.form.plan.id,
      owner_targetName : sub.owner.targetName,
      owner_firstName  : sub.owner.firstName,
      owner_lastName   : sub.owner.lastName,
      applications     : apps_and_lobs.apps,
      lob              : apps_and_lobs.lobs
    }

    report.push(sub_obj) // <----- ***** This is failing ******

    (async (env) => {
      let recipients = await xm.subscriptions.getSubscribers(env, null, sub.id);
      recipients.map(r => {
        util.cmt(JSON.stringify(r, null, 2));
      })
    })(env)
  }))
})(prod);

Answer 1

正如 Andreas 所指出的，它是一个半冒号。我猜总是检查你的分号......

Answer 2

使用array.save() 作为report.save() 来保存对象本身。

(async (env) => {
  const report        = []
  const subscriptions = await xm.subscriptions.getMany(env);

  await Promise.all(subscriptions.map(sub => {
    let apps_and_lobs = xm.subscriptions.process_apps_and_lobs(sub.criteria.data);
    let sub_obj = {
      sub_name         : sub.name,
      sub_uuid         : sub.id,
      form_name        : sub.form.name,
      form_id          : sub.form.id,
      plan_name        : sub.form.plan.name,
      plan_id          : sub.form.plan.id,
      owner_targetName : sub.owner.targetName,
      owner_firstName  : sub.owner.firstName,
      owner_lastName   : sub.owner.lastName,
      applications     : apps_and_lobs.apps,
      lob              : apps_and_lobs.lobs
    }

    report.push(sub_obj) // <----- ***** This is failing ******
    report.save();

    (async (env) => {
      let recipients = await xm.subscriptions.getSubscribers(env, null, sub.id);
      recipients.map(r => {
        util.cmt(JSON.stringify(r, null, 2));
      })
    })(env)
  }))
})(prod);