我希望利用ES6 附带的本机导入/导出。

我在 AWS Lambda 中使用无服务器容器。

我有我的Dockerfile看起来像这样：

FROM public.ecr.aws/lambda/nodejs:14

COPY app ./

RUN npm install

CMD [ "app.handler" ]

然后我有一个app包含我的应用程序代码的目录。该app.js代码如下所示：

import { success } from './utils/log';

exports.handler = async () => {
  success('lambda invoked');
  const response = 'Hello World';
  return {
    statusCode: 200,
    body: JSON.stringify(response),
    isBase64Encoded: false,
  };
};

正如您从这一行中看到的，import { success } from './utils/log';我正在使用本机导入。

在我的 package.json 中，我指定了这个：

  "type": "module"

因为我需要告诉我的应用程序这是一个模块，我想本地导入。如果我不指定这一点，我会得到：

{
    "errorType": "Runtime.UserCodeSyntaxError",
    "errorMessage": "SyntaxError: Cannot use import statement outside a module",
    "stack": [
        "Runtime.UserCodeSyntaxError: SyntaxError: Cannot use import statement outside a module",
        "    at _loadUserApp (/var/runtime/UserFunction.js:98:13)",
        "    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:1063:30)",
        "    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)",
        "    at Module.load (internal/modules/cjs/loader.js:928:32)",
        "    at Function.Module._load (internal/modules/cjs/loader.js:769:14)",
        "    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)",
        "    at internal/main/run_main_module.js:17:47"
    ]
}

所以，我指定它，告诉 Lambda 这是一个模块。但是，对于我的一生，我无法让它工作，我看到了这个错误：

{
    "errorType": "Error",
    "errorMessage": "Must use import to load ES Module: /var/task/app.jsnrequire() of ES modules is not supported.nrequire() of /var/task/app.js from /var/runtime/UserFunction.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules.nInstead rename app.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from /var/task/package.json.n",
    "code": "ERR_REQUIRE_ESM",
    "stack": [
        "Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: /var/task/app.js",
        "require() of ES modules is not supported.",
        "require() of /var/task/app.js from /var/runtime/UserFunction.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules.",
        "Instead rename app.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from /var/task/package.json.",
        "",
        "    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1080:13)",
        "    at Module.load (internal/modules/cjs/loader.js:928:32)",
        "    at Function.Module._load (internal/modules/cjs/loader.js:769:14)",
        "    at Module.require (internal/modules/cjs/loader.js:952:19)",
        "    at require (internal/modules/cjs/helpers.js:88:18)",
        "    at _tryRequire (/var/runtime/UserFunction.js:75:12)",
        "    at _loadUserApp (/var/runtime/UserFunction.js:95:12)",
        "    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:1063:30)"
    ]
}

看起来/var/runtime/UserFunction.js正在调用我的应用程序处理程序作为一个要求和一个模块。但是，我无法控制/var/runtime/UserFunction.js（我不相信？）。在我的Dockerfile我已经指定了Node14. 我完全不知道我哪里出错了？

我想要做的是在没有 Babel/Transpiler 的情况下运行最新和最好的 Node14（例如导入），而不会“膨胀”我的代码。如果有人能指出我出错的正确方向，我将不胜感激。

回答