在 Azure Typescript 函数中使用 ES 模块包

Question

我无法在我的 Azure 函数中使用包 p-map。我收到以下错误：

Worker failed to load function: 'serverless' with function id: '<id>'.
Result: Failure
Exception: Worker was unable to load function serverless: 'Error [ERR_REQUIRE_ESM]: require() of ES Module <es-module> from /usr/local/Cellar/azure-functions-core-tools@4/4.0.4483/workers/node/worker-bundle.js not supported.
Instead change the require of index.js in /usr/local/Cellar/azure-functions-core-tools@4/4.0.4483/workers/node/worker-bundle.js to a dynamic import() which is available in all CommonJS modules.'

项目是通过关注the steps in Azure's documentation创建的。以下是在index.ts:

import { AzureFunction, Context, HttpRequest } from "@azure/functions";
import pMap from "p-map";
import got from "got";

const httpTrigger: AzureFunction = async function (context: Context, req: HttpRequest): Promise<void> {
    const sites = [
        'https://avajs.dev',
        'https://github.com'
    ];

    const mapper = async site => {
        const {requestUrl} = await got.head(site);
        return requestUrl;
    };

    const result = await pMap(sites, mapper, {concurrency: 2});
    

    context.res = {
        // status: 200, /* Defaults to 200 */
        body: result
    };

};

export default httpTrigger;

我的 tsconfig.json 如下所示：

{
  "compilerOptions": {
    "module": "es2020",
    "target": "es2020",
    "outDir": "dist",
    "rootDir": ".",
    "sourceMap": true,
    "strict": false,
    "moduleResolution": "node",
    "allowSyntheticDefaultImports": true
  }
}

最后，这是我的 package.json:

{
  "name": "azure-functions-test",
  "version": "1.0.0",
  "description": "",
  "type": "module",
  "scripts": {
    "build": "tsc",
    "watch": "tsc -w",
    "prestart": "npm run build",
    "start": "func start",
    "test": "echo \"No tests yet...\""
  },
  "dependencies": {
    "got": "^12.0.4",
    "p-map": "^5.3.0"
  },
  "devDependencies": {
    "@azure/functions": "^3.0.0",
    "typescript": "^4.0.0"
  }
}

p-map is strictly an ES Module and cannot be used in CommonJS projects.

我是不是遗漏了什么，或者只是无法在 Azure Functions 中使用 ES 模块包？提前致谢。

GitHub 上述代码的存储库，用于在本地进行测试：azure-functions-test

Answer 1

我通过将 index.ts 文件重命名为 index.mts 解决了我的问题。这在我的 dist 文件夹中构建了一个 index.mjs 文件（在运行 npm run build 之后），它解决了这个问题。

需要注意的一件事是，您还必须编辑 function.json 的 scriptFile 密钥，以便它使用您的 .mjs 文件而不是 non-existing .js 文件。

在 Azure Typescript 函数中使用 ES 模块包

Using ES Module packages in Azure Typescript Function

typescript

azure

azure-functions

commonjs

esmodules