Visual Studio代码 - 通过TypeScript调试节点JS

Question

我目前正在尝试从Visual Studio Code调试用TypeScript编写的Node JS应用程序,但我遇到了一些问题.我的情况类似于这个问题所描述的情况

|-- .settings
|----- launch.json
|-- bin
|----- app.js
|----- app.js.map
|--src
|----- app.ts
|-- tsconfig.json

然后我有tsconfig.json文件:

{
    "compilerOptions": {
        "module": "commonjs",
        "target": "es5",
        "outDir": "bin",
        "rootDir": "src",
        "sourceMap": true
    }
}

该应用程序:

console.log("Hello World!");

该launch.json:

{
    "version": "0.1.0",
    "configurations": [
        {
            "name": "Launch type",
            "type": "node",
            "program": "src/app.ts",
            "stopOnEntry": false,
            "sourceMaps": true,
            "outDir": "bin"
        }
    ]
}

然后我从命令行手动编译项目

tsc

所以我在bin目录中得到两个文件.我在app.ts上设置了一个断点,最后用F5运行解决方案,应用程序启动并停在右边但是在JS文件而不是TS一个:为什么???

我做错了什么或试图实现不可能的事情？

非常感谢您的帮助!:)

编辑

我刚刚在GitHub上分享了我的项目,以便让事情变得更轻松!看看你能不能!:)

Answer 1

绝对可能.

最可能的原因是node.js无法使用生成的map.js文件找到相应的ts文件.您可以尝试在tsconfig.json中指定"sourceRoot"以指向项目的根目录:

sourceRoot: "/Users/SomeUser/projects/test"

就个人而言,我更喜欢使用gulp用于此目的,在我的情况下,它看起来像这样(注意 - 我不使用node.js全局变量'__dirname'来核心sourceRoot路径):

var ts = require('gulp-typescript');

gulp.task('build.js.dev', function() 
{
    var tsProject = ts.createProject('tsconfig.json');

    var tsResult = tsProject.src()
        .pipe(sourcemaps.init())   
        .pipe(ts(tsProject));  

    return merge([
        //Write definitions 
        //tsResult.dts.pipe(gulp.dest("bin")),
        //Write compiled js
        tsResult.js.pipe(sourcemaps.write("./", { sourceRoot: __dirname })).pipe(gulp.dest("bin"))]);
});

之后检查生成的map.js文件.它应该在开头包含类似这样的行:

"sources":["src/app.ts"]

最后:

"sourceRoot":"/Users/SomeUser/projects/test"

组合在一起时,它们必须指向app.ts文件的有效位置.如果不是 - 相应地调整sourceRoot.

[编辑]

以下是与您的项目相同的项目部分(没有gulp) - 我可以在我的机器上进行调试.

launch.json:

{
    // Name of configuration; appears in the launch configuration drop down menu.
    "name": "Launch Server",
    // Type of configuration.
    "type": "node",
    // Workspace relative or absolute path to the program.
    "program": "${workspaceRoot}/src/app.ts",
    // Automatically stop program after launch.
    "stopOnEntry": false,
    // Command line arguments passed to the program.
    "args": [],
    // Workspace relative or absolute path to the working directory of the program being debugged. Default is the current workspace.
    "cwd": "${workspaceRoot}",
    // Workspace relative or absolute path to the runtime executable to be used. Default is the runtime executable on the PATH.
    "runtimeExecutable": null,
    // Optional arguments passed to the runtime executable.
    "runtimeArgs": ["--nolazy"],
    // Environment variables passed to the program.
    "env": {
        "NODE_ENV": "development"
    },
    // Use JavaScript source maps (if they exist).
    "sourceMaps": true,
    // If JavaScript source maps are enabled, the generated code is expected in this directory.
    "outDir": "${workspaceRoot}/bin",
    "request": "launch"
}

tsconfig.json:

{ 
    "compilerOptions": { 
        "emitDecoratorMetadata": true, 
        "experimentalDecorators": true,
        "moduleResolution": "node",
        "module": "commonjs", 
        "target": "es6",
        "sourceMap": true,
        "outDir": "bin",
        "declaration": true,
        "noImplicitAny": true
    },
    "exclude": [
        "node_modules",
        "bin",
        ".vscode",
        "typings/browser.d.ts",
        "typings/browser/**"
    ]
} 

并在tasks.json中构建任务:

{
    "version": "0.1.0",

    // The command is tsc. Assumes that tsc has been installed locally using npm install typescript
    "command": "${workspaceRoot}/node_modules/typescript/bin/tsc",

    // The command is a shell script
    "isShellCommand": true,

    // Show the output window only if unrecognized errors occur.
    "showOutput": "silent",

    // args is the HelloWorld program to compile.
    "args": [],

    // use the standard tsc problem matcher to find compile problems
    // in the output.
    "problemMatcher": "$tsc"
}

[编辑]

我已经对您的git存储库进行了以下次要更新,以便能够在本地进行调试.

在根文件夹中添加package.json,并在那里指定tsc作为依赖项(我更喜欢本地安装):

{
  "name": "123",
  "namelower": "123",
  "version": "0.0.1",
  "private": true,
  "dependencies": {
  },
  "devDependencies": {
    "typescript": "latest"
  }
}

然后转到你的git"stackoverflow"根文件夹并在命令提示符下运行:

npm install

将tasks.json"命令"行更改为:

"command": "${workspaceRoot}/node_modules/typescript/bin/tsc",

在完成这些步骤并构建项目后,我能够在app.ts中放置一个断点,并在运行时将VSCode停在它上面(F5)

[UPDATE]

与Windows兼容的tasks.json版本:

{
    "version": "0.1.0",
    "command": "tsc",

    "showOutput": "always",

    "windows": {
        "command": "node.exe"
    },

    "args": ["${workspaceRoot}\\node_modules\\typescript\\bin\\tsc.js"],

    "problemMatcher": "$tsc"    
}

希望这可以帮助.