Vanilla JS: Mixins break inherited type hints

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.84.2
• OS Version: Windows 10

The issue is quite simple, as shown below, mixins break inherited type hints. exampleMethod() below should have hint references for this.myStr and this.propIsHinted but does not.

Apologies if this belongs somewhere else like the typescript repo, it's vanilla JS but it's probably related to typescript/JSDoc functionality.

function NumberMixin( Base ) {

	return class NumberMixin extends Base {

		/** @type {number} */
		myNum;

	};

}

function StringMixin( Base ) {

	return class StringMixin extends Base {

		/** @type {string} */
		myStr;

	};

}

class MyBase {

	/** @type {boolean} */
	propIsHinted;

}

class SuperClass extends NumberMixin(StringMixin(MyBase)) {

	exampleMethod() {

		// Hinted
		this.myNum;

		// Not hinted
		this.myStr;

		// Not hinted
		this.propIsHinted;

	}

}

Esegui l’esempio di mixin JavaScript fornito nel contesto TypeScript o VS Code per riprodurre i suggerimenti mancanti. Inizia tracciando l’inferenza dei tipi JSDoc per le classi ereditate e i mixin annidati; il lavoro è completato quando exampleMethod() fornisce suggerimenti per myNum, myStr e propIsHinted.