javascript - ImportModuleError","errorMessage":"Error: Cannot find module while using Netlify lambda functions with dependencies

Question

我正在尝试使用 netlify 及其 lambda 函数功能来运行具有依赖关系的 Node 函数。基于 https://css-tricks.com/using-netlify-forms-and-netlify-functions-to-build-an-email-sign-up-widget/ ，我在我的函数/submission-created.js 中有:

const fetch = require('node-fetch');

exports.handler = async event => {

    const email = JSON.parse(event.body).payload.EMAIL
    const asking = JSON.parse(event.body).payload.ASKING
    console.log(`Recieved a submission: ${email}`)
    ....

当我查看我的 netlify 网站功能选项卡(上面的截图)时，我看到:

11:40:35 PM: 2020-12-02T04:40:35.092Z   undefined   ERROR   Uncaught Exception  {"errorType":"Runtime.ImportModuleError","errorMessage":"Error: Cannot find module 'node-fetch'\nRequire stack:\n- /var/task/submission-created.js\n- /var/runtime/UserFunction.js\n- /var/runtime/index.js","stack":["Runtime.ImportModuleError: Error: Cannot find module 'node-fetch'","Require stack:","- /var/task/submission-created.js","- /var/runtime/UserFunction.js","- /var/runtime/index.js","    at _loadUserApp (/var/runtime/UserFunction.js:100:13)","    at Object.module.exports.load (/var/runtime/UserFunction.js:140:17)","    at Object.<anonymous> (/var/runtime/index.js:43:30)","    at Module._compile (internal/modules/cjs/loader.js:1015:30)","    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1035:10)","    at Module.load (internal/modules/cjs/loader.js:879:32)","    at Function.Module._load (internal/modules/cjs/loader.js:724:14)","    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)","    at internal/main/run_main_module.js:17:47"]}

我的 package.json (运行 npm init 之后):

{
"name": "site",
"version": "1.0.0",
"description": "",
"scripts": {
  "test": "echo \"Error: no test specified\" && exit 1"
 },
"author": "",
"license": "ISC",
"dependencies": {
  "dotenv": "^8.2.0",
  "node-fetch": "^2.6.1"
}
 }

包结构如下:

这是 repo :

https://github.com/kc1/test2

我尝试将 Node 模块文件夹和 package.json 放在多个位置并重新推送存储库，但我仍然收到上述错误。我究竟做错了什么？
编辑:
请看 Netlify: No build command found, continuing to publishing有关构建过程的新信息

Answer 1

你应该只有一个 package.json在 base directory .如果这不起作用，请尝试删除 package-lock.json然后再试一次。不要推node_modules文件夹自 Netlify运行 npm install .

If your build requires any JavaScript dependencies, you must list these in a package.json file saved in the site's base directory in your repository.

...

By default, if your site's base directory does not include a yarn.lock file (more information below), we will run npm install to install the dependencies listed in your package.json file.

https://docs.netlify.com/configure-builds/manage-dependencies/#javascript-dependencies
https://docs.netlify.com/configure-builds/get-started/#definitions
如果它仍然不起作用并且是可接受的解决方案，您还可以下载脚本并将其导入本地。

require('./fetch.min.js')

https://cdn.jsdelivr.net/npm/node-fetch@2.6.1/browser.min.js
如果这不起作用，我会尝试 Run a local development environment为了更好地调试并查看您在生产环境中实际获得的软件包。
https://docs.netlify.com/cli/get-started/#run-a-local-development-environment
我能想到的最后一件事是检查 Node.js和Require()可以找到node_modules但这是一个真正的远景:
https://www.bennadel.com/blog/2169-where-does-node-js-and-require-look-for-modules.htm