Cloudflare Workers:找不到模块:错误:无法解析“~/node_modules/nodemailer/lib/sendmail-transport"中的“child_process" [英] Cloudflare Workers: Module not found: Error: Can't resolve 'child_process' in '~/node_modules/nodemailer/lib/sendmail-transport'

问题描述

我在 Cloudflare Worker 中的 Nodemailer 包中遇到以下错误，并想记录我的发现.

I was getting the following error with the Nodemailer package in a Cloudflare Worker and wanted to document what I found.

Module not found: Error: Can't resolve 'child_process' in '~/node_modules/nodemailer/lib/sendmail-transport'

推荐答案

在使用 Cloudflare Workers 进行开发时，我在使用 Nodemailer 包时遇到以下错误:

While developing with Cloudflare Workers, I was getting the following error with the Nodemailer package:

Module not found: Error: Can't resolve 'child_process' in '~/node_modules/nodemailer/lib/sendmail-transport'

当我研究错误时，我发现Webpack试图为客户端捆绑只能在服务器中使用的东西.请参阅 https://github.com/webpack/webpack/issues/744.

When I researched the error, I found that Webpack is trying to bundle things for the client that can only be used in the server. See https://github.com/webpack/webpack/issues/744.

一种可能的解决方案是添加 externals 属性到我的 Worker 的自定义webpack.config.js 文件 并包含所有 Webpack 无法解析的模块.请参阅 https://github.com/webpack/webpack/issues/744#issuecomment-320437402.

One possible solution was to add the externals property to a custom webpack.config.js file for my Worker and include all the modules that cannot be resolved by Webpack. See https://github.com/webpack/webpack/issues/744#issuecomment-320437402.

所以我的 webpack.config.js 文件看起来像这样:

So my webpack.config.js file would look like this:

module.exports = {
  target: "webworker",
  entry: "./index.js",
  externals: [
    "child_process",
    "dns",
    "fs",
    "net",
    "tls",
  ]
}

但是，我发现您不能在 Cloudflare Worker 中使用像 Nodemailer 这样的包.Cloudflare Workers 没有 Node 环境，因此您不能像在具有 Node 环境的服务器端平台中那样使用 Node 包.因此，上面的 Webpack 配置无论如何都不会给您带来多大好处，因为您仍然无法使用 Nodemailer 从 Cloudflare Worker 发送电子邮件.但是，通常有其他方法可以在 Cloudflare Worker 中使用 Node 包或其他 Node 功能.例如，为了从 Worker 发送电子邮件，您必须使用 REST API 而不是 Node 包:

However, I found out that you can't use packages like Nodemailer in a Cloudflare Worker. Cloudflare Workers do not have a Node environment, so you can't use Node packages like you would in a server-side platform that has a Node environment. So the Webpack configurations above won't do you much good anyway because you still can't use Nodemailer to send email from a Cloudflare Worker. However, there are often alternative ways to use Node packages or other Node features in a Cloudflare Worker. For example, in order to send email from a Worker you have to use a REST API instead of a Node package:

• 从 Cloudflare Workers 发送电子邮件
• 有人收到了吗?@sendgrid/email 为工人工作?

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