Classes 07. Instance Validation

class CheckingAccount {
    constructor(clientId,email,firstName,lastName){
        this.clientId=clientId
        this.email=email
        this.firstName=firstName
        this.lastName=lastName
    }
    set clientId(clientId){
        let pattern = /^\d{6}$/g;
        if(!pattern.test(clientId)){
            throw new TypeError("Client ID must be a 6-digit number")
        }
        return this._clientId=clientId
    }
    get clientId(){
        return this._clientId()
    }
    set email(email){
        let emailPatern = /^[a-zA-Z0-9]+@[a-zA-Z.]+$/g
        if(!emailPatern.test(email)){
            throw new TypeError("Invalid e-mail")
        }
        return this._email=email
    }
    get email(){
        return this._email
    }
    set firstName(firstName){
        if(!(firstName.length>=3&&firstName.length<=20)){
            throw new TypeError("First name must be between 3 and 20 characters long")
        }
        let pattern =/[a-zA-Z]/g
        if(!pattern.test(firstName)){
            throw new TypeError("First name must contain only Latin characters")
        }
        return this._firstName=firstName
    }
    get firstname(){
        return this._firstName
    }
    set lastName(lastName){
        if(!(lastName.length>=3&&lastName.length<=20)){
            throw new TypeError("Last name must be between 3 and 20 characters long")
        }
        let pattern =/[a-zA-Z]/g
        if(!pattern.test(lastName)){
            throw new TypeError("Last name must contain only Latin characters")
        }
        return this._lastName=lastName
    }
    get lastName(){
        return this._lastName
    }
}