带有异步等待的节点repl [英] Node repl with async await

问题描述

我想添加对异步/等待节点repl的支持

I would like to add support to async/await to node repl

此问题之后: https://github.com/nodejs/node/issues/8382

我尝试使用此 https://github.com/paulserraino/babel-repl ，但是它缺少异步等待支持

I've tried to use this one https://github.com/paulserraino/babel-repl but it is missing async await suppport

我想使用此代码段

const awaitMatcher = /^(?:\s*(?:(?:let|var|const)\s)?\s*([^=]+)=\s*|^\s*)(await\s[\s\S]*)/;
const asyncWrapper = (code, binder) => {
  let assign = binder ? `root.${binder} = ` : '';
  return `(function(){ async function _wrap() { return ${assign}${code} } return _wrap();})()`;
};

// match & transform
const match = input.match(awaitMatcher);
if(match) {
  input = `${asyncWrapper(match[2], match[1])}`;
}

如何将此代码段添加到节点repl上的自定义评估中?

How can I add this snippet to a custom eval on node repl?

节点repl中的示例:

Example in node repl:

> const user = await User.findOne();

推荐答案

截至节点^ 10 ，您可以在启动repl时使用以下标志:

As of node ^10, you can use the following flag when starting the repl:

node --experimental-repl-await
$ await myPromise()

这篇关于带有异步等待的节点repl的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！