After delving into articles about error handling, a thought lingers in my mind - is throwing an exception on validation logic in the value object really the most efficient approach? Take for example this class that represents a value object:
export class UserName {
private readonly value: string;
constructor(value: string) {
this.value = this.validateName(value);
}
private validateName(value: string): string {
value = value.trim();
if (value === "") {
throw new UserNameError("username is required!");
}
return value;
}
static userNameOf(name: string): UserName {
return new UserName(name);
}
public isValidName(): boolean {
if (!/^[a-zA-Z]+$/.test(this.value)) {
throw new UserNameError("user name should contain only letters");
}
return true;
}
}
I find myself pondering if there is a better way to handle errors instead of simply throwing them. Any suggestions or insights would be greatly appreciated. Thank you!