How can I implement access control in TypeScript?

How can I implement access control in TypeScript?

You can implement access control in TypeScript by using decorators, interfaces, and role-based access control (RBAC). Would you like a code example?

Yes, please provide a code example.

Here's a simple example using decorators:

function AccessControl(role: string) {
    return function(target: any, propertyKey: string, descriptor: PropertyDescriptor) {
        const originalMethod = descriptor.value;
        descriptor.value = function(...args: any[]) {
            if (this.userRole === role) {
                return originalMethod.apply(this, args);
            } else {
                throw new Error('Access denied');
            }
        };
    };
}

class UserService {
    userRole: string;

    constructor(role: string) {
        this.userRole = role;
    }

    @AccessControl('admin')
    deleteUser(userId: string) {
        console.log(`User ${userId} deleted`);
    }
}

This code checks if the user has the 'admin' role before allowing them to delete a user.

That's great! How can I manage multiple roles?

You can manage multiple roles by modifying the decorator to accept an array of roles and checking if the user's role is included in that array. Would you like to see that implementation?