Module build failed: Error: Typescript emitted no output for

Question

When I try to compile a .ts file I get the following error:

Module build failed: Error: Typescript emitted no output for C:\xampp\htdocs\node-api\src\js\server.ts. 
at successLoader (C:\xampp\htdocs\node-api\node_modules\ts-loader\dist\index.js:39:15)
at Object.loader (C:\xampp\htdocs\node-api\node_modules\ts-loader\dist\index.js:21:12)

For compiling I use the following config files.

Webpack:

const path = require( 'path' ),
    CleanWebpackPlugin = require( 'clean-webpack-plugin' );

module.exports = env => {
    return {
        mode: env.dev ? 'development' : 'production',
        entry: {
            'server': './src/js/server.ts'
        },
        output: {
            path: __dirname,
            filename: './dist/js/[name].js',
        },
        externals: '/node_modules',
        module: {
            rules: [
                {
                    test: /\.js$/,
                    exclude: ['/node_modules/', '/src/scss/'],
                    use: [
                        'babel-loader'
                    ]
                },
                {
                    test: /\.ts(x?)$/,
                    exclude: ['/node_modules/', '/src/scss/'],
                    use: [
                        'babel-loader',
                        'ts-loader',
                    ]
                },
                {
                    test:  /\.json$/,
                    loader: 'json-loader'
                },
            ]
        },
        resolve: {
            extensions: ['.ts', '.tsx', '.js' ],
            alias: {
                '@': path.resolve(__dirname, './src/js')
            }
        },
        plugins: [
            new CleanWebpackPlugin(['./dist/js', './dist/css']),
        ]
    }
};

Typescript:

{
    "compilerOptions": {
        "removeComments": true,
        "preserveConstEnums": true,
        "allowJs": true,
        "outDir": "./dist/js",
        "target": "es5",
        "moduleResolution": "node",
        "module": "es2015",
        "lib": [
            "es2015",
            "es2016"
        ]
    },
    "exclude": [
        "node_modules"
    ]
}

Babel:

{
    "presets": [
        [
            "env", {
                "targets": {
                    "node": "current"
                }
            }
        ],
        "stage-2", "es2015"
    ],
    "plugins": ["dynamic-import-node"]
}

As suggested in some other questions I've already changed the order of resolve extensions but that didn't solve it (.js before .ts) . Typescript 2.8.3 is used in combination with Node 8.11.1 and Mongoose 5.0.15 and compiled by Webpack 4.6. So I'm still wondering how to to solve the error mentioned above.

Answer 1

Please set noEmit to false in your tsconfig.json. By default it sets to true, once we change it to false we may not get this error.

"noEmit": false

Answer 2

Override compilerOptions like this in webpack config (when using ts-loader):

    rules: [
      {
        test: /\.[jt]s$/,
        exclude: /(node_modules)/,
        use: [
          {
            loader: 'babel-loader',
            options: {
              presets: ['@babel/preset-env'],
            },
          },
          {
            loader: 'ts-loader',
            options: {
              compilerOptions: {
                noEmit: false,
              },
            },
          },
        ],
      },
    ]