password swordfucl.ts

type Modifier<T> = (value: T) => T;

class Sword {
  private modifiers: Modifier<number>[] = [];
  
  private damage;
  
  public constructor(damage: number = 5) {
    this.damage = damage;
  }
  
  public addModifier(modifier: Modifier<number>): this {
    this.modifiers.push(modifier);
    return this;
  }
  
  public swing(): number {
    const randomness = Math.random() * 0.2;
    const multiplier = 0.9 + randomness;
    let damage = this.damage * multiplier;
  
    for (modifier of this.modifiers) {
      damage = modifier(damage);
    }
  
    return damage;
  }
}
const personalBranding = damage => damage + 1;
const enhancedSteel = damage => damage * 2;
const wearness = damage => damage * 0.9;

const shword = new Sword();
shword.swing(); // ~5

shword
  .addModifier(personalBranding)
  .addModifier(enhancedSteel)
  .addModifier(wearness)


shword.swing(); // 5 & + 1 & * 2 & * 0.9 ~= 11