【问题标题】:Can't run my Node.js Typescript project TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" for /app/src/App.ts无法运行我的 Node.js Typescript 项目 TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" for /app/src/App.ts
【发布时间】:2020-09-17 15:09:40
【问题描述】:

当我尝试在 Heroku 上启动我的应用程序时,我得到了以下堆栈跟踪。 它只是一个基本的 ts.app,就像您在 ts-node 和 nodemon 中看到的一样。 如果您需要更多信息,请告诉我,因为这是我的第一篇文章。 我真的很想知道答案会是什么。

2020-05-30T00:03:12.201106+00:00 heroku[web.1]: Starting process with command `npm start`
2020-05-30T00:03:14.405285+00:00 app[web.1]: 
2020-05-30T00:03:14.405303+00:00 app[web.1]: > discordtoornamentmanager@1.0.0 start /app
2020-05-30T00:03:14.405303+00:00 app[web.1]: > ts-node src/App.ts
2020-05-30T00:03:14.405304+00:00 app[web.1]: 
2020-05-30T00:03:14.833655+00:00 app[web.1]: (node:23) ExperimentalWarning: The ESM module loader is experimental.
2020-05-30T00:03:14.839311+00:00 app[web.1]: TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" for /app/src/App.ts
2020-05-30T00:03:14.839312+00:00 app[web.1]:     at Loader.defaultGetFormat [as _getFormat] (internal/modules/esm/get_format.js:65:15)
2020-05-30T00:03:14.839314+00:00 app[web.1]:     at Loader.getFormat (internal/modules/esm/loader.js:113:42)
2020-05-30T00:03:14.839315+00:00 app[web.1]:     at Loader.getModuleJob (internal/modules/esm/loader.js:244:31)
2020-05-30T00:03:14.839315+00:00 app[web.1]:     at processTicksAndRejections (internal/process/task_queues.js:97:5)
2020-05-30T00:03:14.839316+00:00 app[web.1]:     at Loader.import (internal/modules/esm/loader.js:178:17)
2020-05-30T00:03:14.847801+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2020-05-30T00:03:14.847998+00:00 app[web.1]: npm ERR! errno 1
2020-05-30T00:03:14.848957+00:00 app[web.1]: npm ERR! discordtoornamentmanager@1.0.0 start: `ts-node src/App.ts`
2020-05-30T00:03:14.849050+00:00 app[web.1]: npm ERR! Exit status 1
2020-05-30T00:03:14.849172+00:00 app[web.1]: npm ERR! 
2020-05-30T00:03:14.849254+00:00 app[web.1]: npm ERR! Failed at the discordtoornamentmanager@1.0.0 start script.
2020-05-30T00:03:14.849337+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2020-05-30T00:03:14.854859+00:00 app[web.1]: 
2020-05-30T00:03:14.854998+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2020-05-30T00:03:14.855069+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2020-05-30T00_03_14_850Z-debug.log
2020-05-30T00:03:14.907689+00:00 heroku[web.1]: Process exited with status 1
2020-05-30T00:03:14.943718+00:00 heroku[web.1]: State changed from starting to crashed

这是我的 package.json

{
   "name": "discordtoornamentmanager",
   "version": "1.0.0",
   "description": "",
   "main": "dist/app.js",
   "type": "module",
   "scripts": {
      "test": "echo \"Error: no test specified\" && exit 1",
      "dev": "nodemon -x ts-node src/App.ts",
      "start": "ts-node src/App.ts"
   },
   "keywords": [],
   "author": "",
   "license": "ISC",
   "dependencies": {
      "@types/node": "^14.0.5",
      "axios": "^0.19.2",
      "discord.js": "^12.2.0",
      "pg": "^8.2.1",
      "reflect-metadata": "^0.1.10",
      "typeorm": "0.2.25",
      "typescript": "^3.9.3",
      "nodemon": "^2.0.4",
      "ts-node": "8.10.1"

   }
}

这是我的 tsconfig

{
   "compilerOptions": {
      "lib": [
         "es6"
      ],
      "target": "es6",
      "module": "commonjs",
      "moduleResolution": "node",
      "outDir": "dist",
      "resolveJsonModule": true,
      "emitDecoratorMetadata": true,
      "esModuleInterop": true,
      "experimentalDecorators": true,
      "sourceMap": true
   },
   "include": ["src/**/*.ts"],
   "exclude": ["node_modules", "**/*.spec.ts"]
}

【问题讨论】:

标签: node.js typescript npm


【解决方案1】:

从 package.json 中移除 "type": "module"


https://github.com/TypeStrong/ts-node/issues/935


如果您不想删除"type": "module"(例如,如果您在.ts 中使用import 语句,允许从模块推断类型),那么您可以在@987654327 中使用以下选项@:

{
  "compilerOptions": {
    "esModuleInterop": true,
  }
}

然后您可以使用ts-node 使用配置启动服务器。

安装:

npm install -g ts-node

运行:

ts-node my_server.ts

【讨论】:

  • @DanDascalescu,你是对的。不幸的是,没有"type": "module" 就无法使用 ESM。所描述的解决方案有效,因为作者在他的 tsconfig.json 中提到:"module": "commonjs" :) 否则,您可以尝试跳入1007
  • 我来自this 答案,现在我处于无限循环中
  • @wormsparty 完全正确!我还在里面
  • "esModuleInterop": true 已经存在于 tsconfig 文件中,仍然出现此错误。
【解决方案2】:

使用

node --loader ts-node/esm ./my-script.ts

而不是

ts-node ./my-script.ts

【讨论】:

  • 什么是 ts-node/esm? github.com/bluelovers/ws-esm-ts-node没有描述
  • 对我来说这是正确的答案。如果我想使用模块,删除 types = module 不是解决方案。一种解决方法是使用 commonjs 覆盖脚本调用中的 tsconfig 模块选项。但这也很不愉快。
  • 要使用 nodemon 运行它,我们可以使用环境变量。然后调用看起来像这样:NODE_OPTIONS='--no-warnings --loader ts-node/esm' nodemon --watch 'src/**/*' -e ts,tsx --exec ts-node ./server.ts
  • 这行得通,现在我可以运行单独的打字稿文件了!
【解决方案3】:

在此之前:

node --loader ts-node/esm ./my-script.ts

我必须更新 ssri

npm update ssri --depth 5

【讨论】:

    【解决方案4】:

    我第一次遇到这个问题可能是一年多以前,而 ts-node 还没有解决它。以上解决方案都不适合我,我似乎已经尝试了所有方法。

    我只是求助于使用tsc --outDir out file.ts,然后使用node out/file.js 正常运行文件,然后将out 添加到.gitignore

    ts-node 背后的想法很棒,当它无法处理像这样看似简单的示例时真的很糟糕。抱歉解决方案不使用 ts-node,但我无法让它工作。

    【讨论】:

      【解决方案5】:

      不确定这是否会对任何人有所帮助,但我通过将其放在开头来解决它:

      #!/usr/bin/env node
      

      【讨论】:

        【解决方案6】:

        package.json 中删除"type": "module" 并添加:

          "compilerOptions": {
            "module": "CommonJS"
          },
        

        tsconfig.json 中为我解决了这个问题。

        【讨论】:

        • 这解决了我的问题。我使用 Next.js + Express 和 TypeScript。将 tsconfig.json 中的“模块”中的“esnext”更改为“commonJS”。一切都还可以,不知道会不会有中断。
        • 这对我也有用。
        • 谢谢
        【解决方案7】:

        我对我的 package.json 和 tsconfig.json 进行了一些更改。最后,它对我有用!

        1. 在 package.json 中添加 "type": "module"
        2. 在 tsconfig.json 中取消注释 "moduleResolution": "node" 部分
        3. 在 tsconfig.json 中将“模块”部分更改为“ESNEXT”
        4. 然后用这个节点运行主脚本 --loader ts-node/esm .\index.ts

        tsconfig.json

        {
        "compilerOptions": {
        /* Visit https://aka.ms/tsconfig.json to read more about this file */
        
        /* Projects */
        // "incremental": true,                              /* Enable incremental compilation */
        // "composite": true,                                /* Enable constraints that allow a TypeScript project to be used with project references. */
        // "tsBuildInfoFile": "./",                          /* Specify the folder for .tsbuildinfo incremental compilation files. */
        // "disableSourceOfProjectReferenceRedirect": true,  /* Disable preferring source files instead of declaration files when referencing composite projects */
        // "disableSolutionSearching": true,                 /* Opt a project out of multi-project reference checking when editing. */
        // "disableReferencedProjectLoad": true,             /* Reduce the number of projects loaded automatically by TypeScript. */
        
        /* Language and Environment */
        "target": "es5",                                     /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
        // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
        // "jsx": "preserve",                                /* Specify what JSX code is generated. */
        // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
        // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
        // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h' */
        // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
        // "jsxImportSource": "",                            /* Specify module specifier used to import the JSX factory functions when using `jsx: react-jsx*`.` */
        // "reactNamespace": "",                             /* Specify the object invoked for `createElement`. This only applies when targeting `react` JSX emit. */
        // "noLib": true,                                    /* Disable including any library files, including the default lib.d.ts. */
        // "useDefineForClassFields": true,                  /* Emit ECMAScript-standard-compliant class fields. */
        
        /* Modules */
        "module": "ESNEXT",  // ****HERE                          /* Specify what module code is generated. */
        // "rootDir": "./",                                  /* Specify the root folder within your source files. */
        "moduleResolution": "node",   // ****HERE                     /* Specify how TypeScript looks up a file from a given module specifier. */
        // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
        // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
        // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
        // "typeRoots": [],                                  /* Specify multiple folders that act like `./node_modules/@types`. */
        // "types": [],                                      /* Specify type package names to be included without being referenced in a source file. */
        // "allowUmdGlobalAccess": true,                     /* Allow accessing UMD globals from modules. */
        // "resolveJsonModule": true,                        /* Enable importing .json files */
        // "noResolve": true,                                /* Disallow `import`s, `require`s or `<reference>`s from expanding the number of files TypeScript should add to a project. */
        
        /* JavaScript Support */
        // "allowJs": true,                                  /* Allow JavaScript files to be a part of your program. Use the `checkJS` option to get errors from these files. */
        // "checkJs": true,                                  /* Enable error reporting in type-checked JavaScript files. */
        // "maxNodeModuleJsDepth": 1,                        /* Specify the maximum folder depth used for checking JavaScript files from `node_modules`. Only applicable with `allowJs`. */
        
        /* Emit */
        // "declaration": true,                              /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
        // "declarationMap": true,                           /* Create sourcemaps for d.ts files. */
        // "emitDeclarationOnly": true,                      /* Only output d.ts files and not JavaScript files. */
        // "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
        // "outFile": "./",                                  /* Specify a file that bundles all outputs into one JavaScript file. If `declaration` is true, also designates a file that bundles all .d.ts output. */
        // "outDir": "./",                                   /* Specify an output folder for all emitted files. */
        // "removeComments": true,                           /* Disable emitting comments. */
        // "noEmit": true,                                   /* Disable emitting files from a compilation. */
        // "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
        // "importsNotUsedAsValues": "remove",               /* Specify emit/checking behavior for imports that are only used for types */
        // "downlevelIteration": true,                       /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
        // "sourceRoot": "",                                 /* Specify the root path for debuggers to find the reference source code. */
        // "mapRoot": "",                                    /* Specify the location where debugger should locate map files instead of generated locations. */
        // "inlineSourceMap": true,                          /* Include sourcemap files inside the emitted JavaScript. */
        // "inlineSources": true,                            /* Include source code in the sourcemaps inside the emitted JavaScript. */
        // "emitBOM": true,                                  /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
        // "newLine": "crlf",                                /* Set the newline character for emitting files. */
        // "stripInternal": true,                            /* Disable emitting declarations that have `@internal` in their JSDoc comments. */
        // "noEmitHelpers": true,                            /* Disable generating custom helper functions like `__extends` in compiled output. */
        // "noEmitOnError": true,                            /* Disable emitting files if any type checking errors are reported. */
        // "preserveConstEnums": true,                       /* Disable erasing `const enum` declarations in generated code. */
        // "declarationDir": "./",                           /* Specify the output directory for generated declaration files. */
        
        /* Interop Constraints */
        // "isolatedModules": true,                          /* Ensure that each file can be safely transpiled without relying on other imports. */
        // "allowSyntheticDefaultImports": true,             /* Allow 'import x from y' when a module doesn't have a default export. */
        "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */
        // "preserveSymlinks": true,                         /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
        "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
        
        /* Type Checking */
        "strict": true,                                      /* Enable all strict type-checking options. */
        // "noImplicitAny": true,                            /* Enable error reporting for expressions and declarations with an implied `any` type.. */
        // "strictNullChecks": true,                         /* When type checking, take into account `null` and `undefined`. */
        // "strictFunctionTypes": true,                      /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
        // "strictBindCallApply": true,                      /* Check that the arguments for `bind`, `call`, and `apply` methods match the original function. */
        // "strictPropertyInitialization": true,             /* Check for class properties that are declared but not set in the constructor. */
        // "noImplicitThis": true,                           /* Enable error reporting when `this` is given the type `any`. */
        // "useUnknownInCatchVariables": true,               /* Type catch clause variables as 'unknown' instead of 'any'. */
        // "alwaysStrict": true,                             /* Ensure 'use strict' is always emitted. */
        // "noUnusedLocals": true,                           /* Enable error reporting when a local variables aren't read. */
        // "noUnusedParameters": true,                       /* Raise an error when a function parameter isn't read */
        // "exactOptionalPropertyTypes": true,               /* Interpret optional property types as written, rather than adding 'undefined'. */
        // "noImplicitReturns": true,                        /* Enable error reporting for codepaths that do not explicitly return in a function. */
        // "noFallthroughCasesInSwitch": true,               /* Enable error reporting for fallthrough cases in switch statements. */
        // "noUncheckedIndexedAccess": true,                 /* Include 'undefined' in index signature results */
        // "noImplicitOverride": true,                       /* Ensure overriding members in derived classes are marked with an override modifier. */
        // "noPropertyAccessFromIndexSignature": true,       /* Enforces using indexed accessors for keys declared using an indexed type */
        // "allowUnusedLabels": true,                        /* Disable error reporting for unused labels. */
        // "allowUnreachableCode": true,                     /* Disable error reporting for unreachable code. */
        
        /* Completeness */
        // "skipDefaultLibCheck": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */
        "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
        }}
        

        package.json

        {
        "name": "async-with-ts",
        "version": "1.0.0",
        "main": "index.js",
        "license": "MIT",
        "type": "module", // ****HERE
        "devDependencies": {
        "@types/node-fetch": "^3.0.3",
        "ts-node": "^10.2.1",
        "typescript": "^4.4.2"
        },
        "dependencies": {
        "node-fetch": "^3.0.0"
          }
        }
        

        你应该注意使用这个命令

        node --loader ts-node/esm .\index.ts
        

        【讨论】:

        • 请在您的回答中提供更多详细信息。正如目前所写的那样,很难理解您的解决方案。
        • 以上是对您的答案的审查的预制评论 - 社区是一个机器人,您无法回复它。也就是说,应该将信息和解释添加到答案中,而不是 cmets。谢谢。
        • 好的。我把帖子修好了
        • 推荐从ts-node读取参考:github.com/TypeStrong/ts-node/issues/1007
        【解决方案8】:

        我遵循了这里给出的建议。我还必须卸载 lodash-es 并安装 lodash 才能使其正常工作。

        【讨论】:

          【解决方案9】:

          将此添加到tsconfig.json

          {
            /* ... your props ... */
          
            "ts-node": {
              "compilerOptions": {
                "module": "CommonJS"
              }
            }
          }
          

          【讨论】:

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