An import path cannot end with '.ts' - NodeJS and Visual Code

Question

I've got an error while trying to build a simple NodeJS app:

Even that Visual Code prompts an error, my code got running.. When I remove the .ts extension from import statement, I got an error that the file cannot be found.

I'm using webpack, but these files are from server. Here's my folder structure:

And here's my webpack file:

var webpack = require('webpack');
var helpers = require('./helpers');

//# Webpack Plugins
var CopyWebpackPlugin = (CopyWebpackPlugin = require('copy-webpack-plugin'), CopyWebpackPlugin.default || CopyWebpackPlugin);
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ForkCheckerPlugin = require('awesome-typescript-loader').ForkCheckerPlugin;
var ExtractTextPlugin = require('extract-text-webpack-plugin');

//# Webpack Constants
const ENV = process.env.ENV = process.env.NODE_ENV = 'development';
const HMR = helpers.hasProcessFlag('hot');
const METADATA = {
  title: 'My Application',
  baseUrl: '/',
  host: process.env.HOST || '0.0.0.0',
  port: process.env.PORT || 8080,
  ENV: ENV,
  HMR: HMR
};

//# Webpack Configuration
module.exports = {
  metadata: METADATA,

  entry: {
    'polyfills': './src/polyfills.ts',
    'vendor': './src/vendor.ts',
    'main': './src/main.ts',
  },

  resolve: {
    extensions: ['', '.ts', '.tsx', '.js', '.scss'],
    root: helpers.root('src'),
    modulesDirectories: [
      'node_modules',
      'server'
    ]
  },

  module: {
    preLoaders: [
      {
        test: /\.js$/,
        loader: 'source-map-loader',
        exclude: [
          helpers.root('node_modules/rxjs'),
          helpers.root('node_modules/@angular2-material'),
          helpers.root('node_modules/@angular')
        ]
      }

    ],

    loaders: [
      {
        test: /\.ts$/,
        loader: 'awesome-typescript-loader',
        exclude: [/\.(spec|e2e)\.ts$/]
      },
      {
        test: /\.json$/,
        loader: 'json-loader'
      },
      {
        test: /\.css$/,
        loader: 'raw-loader'
      },
      {
        test: /\.html$/,
        loader: 'raw-loader',
        exclude: [helpers.root('src/index.html')]
      },
      {
        test: /\.scss|css$/,
        loader: ExtractTextPlugin.extract({ fallbackLoader: 'style-loader', loader: 'css-loader!sass-loader' }),
        exclude: [ helpers.root('node_modules') ]
      },
      { 
        test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?$/, 
        loader: "url-loader?limit=10000&mimetype=application/font-woff" 
      },
      { 
        test: /\.(ttf|eot|svg|woff(2)?)(\?[a-z0-9=&.]+)?$/,
        loader : 'file-loader'
      }
    ]
  },

  plugins: [

    new ForkCheckerPlugin(),
    new webpack.optimize.OccurrenceOrderPlugin(true),

    new webpack.optimize.CommonsChunkPlugin({
      name: ['polyfills', 'vendor'].reverse()
    }),

    new ExtractTextPlugin("[name].css"),

    new CopyWebpackPlugin([{
      from: 'src/assets',
      to: 'assets'
    }]),

    new HtmlWebpackPlugin({
      template: 'src/index.html',
      chunksSortMode: 'dependency'
    }),

    new webpack.ProvidePlugin({
      jQuery: 'jquery',
      $: 'jquery',
      jquery: 'jquery',
      "Tether": 'tether',
      "window.Tether": "tether"
    })

  ],
  
  node: {
    global: 'window',
    crypto: 'empty',
    module: false,
    clearImmediate: false,
    setImmediate: false
  }
};

Can anybody help me? Tks!

Answer 1

I had this issue and it took me the better part of an hour to realize all I had to do was remove the .ts extension from the import. For me:

 // index.ts
import { renderSection, useConfig, writeToFile } from './hooks.ts'

// changed from `./hooks.ts` to `./hooks`
import { renderSection, useConfig, writeToFile } from './hooks'

Answer 2

This is what I use and it works pretty well.

Full webpack config here: https://gist.github.com/victorhazbun/8c97dc578ea14776facef09a115ae3ad

webpack.config.js

'use strict';
const webpack = require('webpack');

module.exports = {
  ...
  resolve: {
    extensions: [".ts", ".tsx", ".js"]
  },
  ...
};

Answer 3

For me the case was VSCode was using different Typescript version where as the workspace was dependent on different version. Need to select the one from the workspace.
Click on version in the status bar:

and select the version from the workspace.

Answer 4

I had the same problem and the solution for me was to just re-run the application. In my case, I had just finished converting some files to .tsx, perhaps it explains it.