Hyun chul-hyun

## Gear.6.ts
class Gear {
  private _wheel: Wheel;

  constructor(
    readonly chainring: number,
    readonly cog: number,
    readonly rim: number,
    readonly tire: number
  ) {}

## Gear.5.ts
class Gear {
  private _wheel: Wheel;

  constructor(
    readonly chainring: number,
    readonly cog: number,
    readonly rim: number,
    readonly tire: number
  ) {}

## Gear.4.ts
class Gear {
  private _wheel: Wheel;

  constructor(
    readonly chainring: number,
    readonly cog: number,
    readonly rim: number,
    readonly tire: number
  ) {}

## Gear.3.ts
class Gear {
  readonly wheel;

  constructor(
    readonly chainring: number,
    readonly cog: number,
    rim : number,
    tire: number
  ) {
    this.wheel = new Wheel(rim, tire);

## Gear.2.ts
class Gear {
  constructor(
    readonly chainring: number,
    readonly cog: number,
    readonly wheel: { diameter: number }
  ) {}

  get ratio() {
    return this.chainring / this.cog;
  }

## Gear.1.ts
class Gear {
  constructor(
    readonly chainring: number,
    readonly cog: number,
    readonly rim: number,
    readonly tire: number
  ) {}

  get ratio() {
    return this.chainring / this.cog;

## version1.ts
class ProceduralStopWatch {
    public startTime;
    public stopTime;

    getElapsedTime = () => this.startMsTime - this.stopMsTime
}

// example

const stopWatch = new ProceduralStopWatch();

## Gear1.ts
class Gear {
  constructor(readonly chainring: number, readonly cog: number) {}

  ratio() {
    return this.chainring / this.cog;
  }
}

## .eslintrc.js
module.exports = {
    'extends': 'airbnb',
//     "parser": "typescript-eslint-parser",
//     "parserOptions": {
//         "ecmaVersion": 6,
//         "sourceType": "module",
//         "ecmaFeatures": {
//             "modules": true,
//             "jsx": true
//         }

## test.uml
class Context{
    - StrategyA strategyA
    - StrategyB strategyB
}

package PackageStrategyA {
    interface StrategyA{
        + excute()
    }
	class Gear {
	private _wheel: Wheel;

	constructor(
	readonly chainring: number,
	readonly cog: number,
	readonly rim: number,
	readonly tire: number
	) {}
	class Gear {
	readonly wheel;

	constructor(
	readonly chainring: number,
	readonly cog: number,
	rim : number,
	tire: number
	) {
	this.wheel = new Wheel(rim, tire);
	class ProceduralStopWatch {
	public startTime;
	public stopTime;

	getElapsedTime = () => this.startMsTime - this.stopMsTime
	}

	// example

	const stopWatch = new ProceduralStopWatch();
	class Gear {
	constructor(readonly chainring: number, readonly cog: number) {}

	ratio() {
	return this.chainring / this.cog;
	}
	}
	module.exports = {
	'extends': 'airbnb',
	// "parser": "typescript-eslint-parser",
	// "parserOptions": {
	// "ecmaVersion": 6,
	// "sourceType": "module",
	// "ecmaFeatures": {
	// "modules": true,
	// "jsx": true
	// }
	class Context{
	- StrategyA strategyA
	- StrategyB strategyB
	}

	package PackageStrategyA {
	interface StrategyA{
	+ excute()
	}