유지보수가 쉬운 코드

Gear1.ts

class Gear {
  constructor(readonly chainring: number, readonly cog: number) {}

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

Gear2.ts

class Gear {
  constructor(private _chainring: number, private _cog: number) {}

  get chainring() {
    return this._chainring;
  }

  get cog() {
    return this._cog;
  }

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