es6 classes should copy parent class constructor signature

Description

class Parent {
  /** @param {string} value */
  constructor(value) {}
}

class Child1 extends Parent {}
class Child2 extends Parent {
  /** @override */
  constructor(...args) {
    super(...args);
  }
}
class Child3 extends Parent {
  /** @param {string} value */
  constructor(value) {
    super(value);
  }
}

new Parent(1); // OK
new Child1(1); // NO WARNING
new Child2(2); // NO WARNING
new Child3(2); // OK

Contributor guide

Tech stack

javascript

Domain

tooling

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

4

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

3-5 days

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

JavaScript inheritanceClosure Compiler internalsJava programming

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

30

Research direction

Investigate how closure compiler infers constructor signatures for classes. Look at the relevant files in the type system (e.g., TypeCheck.java or JSType.java). Determine why Child1 and Child2 do not produce warnings. Consider extending the type inference to copy the parent's constructor signature when the child does not override it.