Practice the Facade Pattern in typescript

app.ts

import { Facade } from "./facade";

const facade: Facade = new Facade();
const isEligibile: boolean = facade.checkEligibility();
console.log(`You are${isEligibile ? '' : 'not'} eligible.`);

backgroudCheck.ts

export class BackgroudCheck {
    criminalRecords(): boolean {
        return false;
    }
}

facade.ts

import { Funds } from "./funds";
import { BackgroudCheck } from "./backgroudCheck";
import { Fraud } from "./fraud";

export class Facade {
    private funds: Funds = new Funds();
    private backgroundCheck: BackgroudCheck = new BackgroudCheck();
    private fraud: Fraud = new Fraud();

    checkEligibility(): boolean {
        return this.funds.checkFunds() &&
            !this.backgroundCheck.criminalRecords() &&
            !this.fraud.checkFraud();
    }
}

fraud.ts

export class Fraud {
    checkFraud(): boolean {
        return false;
    }
}

funds.ts

export class Funds {
    checkFunds(): boolean {
        return true;
    }
}

Example from mastering-typescript-programming