ts-sample

helloModule.ts

export class Hello {
	static say() {
		console.log('Hello TypeScript!');
	}
}

export class Word {
	private word: string;
	
	setWord(word: string) {
		this.word = word;
	}
	
	getWord() {
		return this.word;
	}
}

index.ts

import {Hello, Word} from './helloModule';

Hello.say();

let word = new Word();
word.setWord('ES6');
console.log(word.getWord());

tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "ES5",
    "noImplicitAny": true,
    "outDir": "./lib"
  },
  "files": [
    "./src/helloModule.ts",
    "./src/index.ts"
  ]
}