在最新的Node.js中无法进行顶层等待 [英] Top-level await doesn't work in the latest Node.js

问题描述

Node.js是否仍不支持顶级await(2020年1月，Node.js 13.5.0)?

Is top-level await still not supported in Node.js (Jan 2020, Node.js 13.5.0)?

我已经尝试了一些教程，例如此教程，但仍然没有运气好，总是出现相同的错误:

I've tried some tutorials, like this one, but still no luck, always getting the same error:

D:\NodeJS>node --experimental-modules test.js
(node:17724) ExperimentalWarning: The ESM module loader is experimental.
file:///D:/NodeJS/test.js:9
await test();
^^^^^

SyntaxError: Unexpected reserved word

整个文件内容:

function test() {
}

await test();

我尝试在package.json中使用"type": "module"，并将文件重命名为test.mjs，但即使使用最新的Node.js 13.5.0，仍然会出现相同的错误

I have tried using "type": "module" in package.json, and renaming file into test.mjs, but still the same error, even with the latest Node.js 13.5.0

我在做什么错了?

推荐答案

每个此博客文章，节点v13.3 +中位于标志--harmony-top-level-await后的顶级await可用.您启用的模块标志仅适用于ESM模块，不适用于顶层等待.

Per this issue tracker and this blog post, top-level await is available in Node v13.3+ behind the flag --harmony-top-level-await. The module flag you're enabling is only for ESM modules and not for top level await.

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