April 1, 2019

How to Use Typescript with Webpack

This is smallest possible guide and setup of using typescript with webpack.

webpack.config.js

const path = require('path');

module.exports = {
  entry: './src/js/index.ts',
  mode: 'production',
  resolve:{
      extensions: ['.js', '.ts', '.tsx']
  },
  module:{
      rules: [
          {
              test: /\.tsx?$/,
              use:'ts-loader',
              exclude: /node_modules/
          }
      ]
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js'
  }
};

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    
    <script src="./../dist/bundle.js"></script>
</body>
</html>

index.ts

import Employee from './employee';

var emp = new Employee();

emp.printName('James');

employee.ts

export default class Employee {

    printName(name:string){
        console.log(`Hello ${name}`);
    }
}

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