TypeScript Patternmatching

functions.sjs

// Translation of functions.ts using sparkler
// https://github.com/natefaubion/sparkler

function pickCard(x) {
  [...{ suit @ String, card @ number }] =>  {
    var pickedCard = Math.floor(Math.random() * x.length);
    return pickedCard;  
  }
  x @ Number => {
    var pickedSuit = Math.floor(x / 13);
    return { suit: suits[pickedSuit], card: x % 13 };
  }
} 

functions.ts

// Pattern matching on functions

function pickCard {
  (x: {suit: string; card: number; }[]): number {
  
    var pickedCard = Math.floor(Math.random() * x.length);
    return pickedCard;  
    
  }
  (x: number): {suit: string; card: number; } {
  
    var pickedSuit = Math.floor(x / 13);
    return { suit: suits[pickedSuit], card: x % 13 };
    
  }
} 

match.sjs

// Pattern matching using match translated

function whoami (x) {
  
  match x {
    case { name @ String, type: 'person' }: 
        return 'Person: ' + name;
        
    case { name @ String, type: 'animal' }: 
        return 'Animal: ' + name;
        
    default: 
        return 'Unkown you';
  }
  
} 

match.ts

// Pattern matching using match

function whoami (x: any): string {
  
  match x {
    case { name: string, type: 'person' }: 
        return 'Person: ' + name;
        
    case { name: string, type: 'animal' }: 
        return 'Animal: ' + name;
        
    default: 
        return 'Unkown you';
  }
  
}