SOLID - Liskov Substitution Principle

lsp_ex1.ts

class Vehicle {
    function startEngine() {
        // Standard engine startup functionality
    }
    function accelerate() {
        // Standard acceleration functionality
    }
}

class Car extends Vehicle {
    function startEngine() {
        this.engageIgnition();
        super.startEngine()
    }
    private function engageIgnition() {
        // Ignition procedure
    }
}
 
class ElectricBus extends Vehicle {
    function accelerate() {
        this.increaseVoltage();
        this.connectIndividualEngines();
    }
    private function increaseVoltage() {
        // Electrical Logic
    }
    private function connectIndividualEngines() {
       // Connection Logic
    }
}
// Driver can use ElectricBus or Car only knowing the vehicle functions.
class Driver {
    function go(v: Vehicle) {
        v.startEngine();
        v.accelerate();
    }
}