class Department {
    private id: string;
    private name: string;
    private employees: string[] = [];

    constructor(id: string, name: string) {
        this.id = id;
        this.name = n;
    }
}

위를 축약할 수 있다.

class Department {
    // private id: string;
    // private name: string;
    private employees: string[] = [];

    constructor(private id: string, public name: string) {
        // this.id = id;
        // this.name = n;
    }
}

상속 ex

class Department {
  // private id: string;
  // private name: string;
  private employees: string[] = [];

  constructor(private readonly id: string, public name: string) {
    // this.id = id;
    // this.name = n;
  }

  describe(this: Department) {
    console.log(`Department (${this.id}): ${this.name}`);
  }

  addEmployee(employee: string) {
    this.employees.push(employee);
  }

  printEmployeeInformation() {
    console.log(this.employees.length);
    console.log(this.employees);
  }
}

class ITDepartment extends Department {
  constructor(id: string, public admins: string[]) {
    super(id, "IT");
  }
}

class AccountingDepartment extends Department {
  constructor(id: string, private reports: string[]) {
    super(id, 'Accounting');
  }

  addReport(text: string) {
    this.reports.push(text);
  }

  printReports() {
    console.log(this.reports);
  }
}

const it = new ITDepartment("d1", ["Max"]);

it.addEmployee("Max");
it.addEmployee("Manu");

// it.employees[2] = 'anna';

it.describe();
it.printEmployeeInformation();

console.log(it);

const accounting = new AccountingDepartment('d2', []);

accounting.addReport('something went wrong...');

accounting.printReports();

private는 해당 클래스에서만 접근 가능
protected 상속한 클래스까지 접근 가능
public는 모두 접근 가능

getter, setter

class Department {
  // private id: string;
  // private name: string;
  protected employees: string[] = [];

  constructor(private readonly id: string, public name: string) {
    // this.id = id;
    // this.name = n;
  }

  describe(this: Department) {
    console.log(`Department (${this.id}): ${this.name}`);
  }

  addEmployee(employee: string) {
    this.employees.push(employee);
  }

  printEmployeeInformation() {
    console.log(this.employees.length);
    console.log(this.employees);
  }
}

class AccountingDepartment extends Department {
  private lastReport: string;

  get mostRecentReport() {
    if (this.lastReport) {
      return this.lastReport;
    }
    throw new Error("No report found.");
  }

  set mostRecentReport(value: string) {
    if (!value) {
      throw new Error("Please pass in a valid value!");
    }
    this.addReport(value);
  }

  constructor(id: string, private reports: string[]) {
    super(id, "Accounting");
    this.lastReport = reports[0];
  }

  addEmployee(name: string) {
    if (name === "Max") {
      return;
    }
    this.employees.push(name);
  }

  addReport(text: string) {
    this.reports.push(text);
    this.lastReport = text;
  }

  printReports() {
    console.log(this.reports);
  }
}

const accounting = new AccountingDepartment("d2", []);

accounting.mostRecentReport = 'Year End Report';
accounting.addReport("something went wrong...");
console.log(accounting.mostRecentReport);