Parameter properties are not supported

[arnaudNYC]

Code being compiled:

class Project {
  constructor(
    public name: string,
    public deadline: Date,
    public budget: number
  ) {}

  extendDeadline(days: number): void {
    this.deadline.setDate(this.deadline.getDate() + days);
  }
}
const p = new Project("new app", new Date(), 1000);
console.log(p);

Expected:

class Project {
    name;
    deadline;
    budget;
    constructor(name, deadline, budget) {
        this.name = name;
        this.deadline = deadline;
        this.budget = budget;
    }
    extendDeadline(days) {
        this.deadline.setDate(this.deadline.getDate() + days);
    }
}
const p = new Project("new app", new Date(), 1000);
console.log(p);

/* outputs:

Project {
  name: 'new app',
  deadline: 2025-03-12T19:10:10.994Z,
  budget: 1000
}

*/

Actual:

class Project {
    constructor(name, deadline, budget) { }
    extendDeadline(days) {
        this.deadline.setDate(this.deadline.getDate() + days);
    }
}
const p = new Project("new app", new Date(), 1000);
console.log(p);

/* outputs:
Project {}
*/

Ref doc: https://www.typescriptlang.org/docs/handbook/2/classes.html#parameter-properties

[arnaudNYC]

Fixed!