Stherzada Generics

stherzadaGenerics.ts

interface Skills {
    [language: string]: 'Beginner' | 'Intermediate' | 'Expert' | 'Unknown';
}

// A mixin to add coding ability
type Coder = {
    codeIn(language: string): void;
};

function CodingMixin<T extends Skills>(base: new (...args: any[]) => { skills: T }): any & Coder {
    return class extends base implements Coder {
        codeIn(language: string): void {
            const proficiency = this.skills[language] || "Unknown";
            console.log(`${this.name} codes in ${language}. Proficiency: ${proficiency}`);
        }
    };
}

// A decorator to log expertise upon method call
function Greet(target: any, propertyKey: string, descriptor: PropertyDescriptor) {
    const originalMethod = descriptor.value;
    descriptor.value = function(...args: any[]) {
        console.log(`Hello, my name is ${this.name}.`);
        originalMethod.apply(this, args);
    };
    return descriptor;
}

class VersatilePerson<T extends Skills> {
    constructor(public name: string, public age: number, public skills: T) {}

    @Greet
    displaySkills(): this {
        console.log(`My coding skills include: ${JSON.stringify(this.skills)}`);
        return this; // for chaining
    }

    introduce(): this {
        console.log(`I am ${this.age} years old.`);
        return this; // for chaining
    }
}

const EnhancedCoder = CodingMixin(VersatilePerson);

const stherzada = new EnhancedCoder('Stherzada', 25, {
    TypeScript: 'Expert',
    JavaScript: 'Intermediate',
    Python: 'Beginner'
});

stherzada.displaySkills().introduce().codeIn('TypeScript').codeIn('JavaScript').codeIn('Python');