Using `@extends` in JavaScript + JSDoc removes method documentations

[jespertheend]

Bug Report

🔎 Search Terms

jsdoc extended generic class documentation

🕗 Version & Regression Information

• This changed between versions 4.6.4 and 4.7.4

⏯ Playground Link

• JavaScript playground link
• TypeScript equivalent

💻 Code

/** @template T */
class GenericBaseClass {
	/** Method documentation. */
	method() {}
}

/** @extends {GenericBaseClass<number>} */
class GenericExtendedClass extends GenericBaseClass {
	// hover over 'method' to see the documentation
	method() {}
}

const y = new GenericExtendedClass();
// hover over 'method' to see the documentation
y.method;

🙁 Actual behavior

When hovering over y.method or the method() implementation from GenericExtendedClass the documentation of the method is missing.

🙂 Expected behavior

Hovering reveals the inherited documentation from the parent class. This used to work in TypeScript 4.6.4 and still works when using TypeScript, where Generic classes are extended using GenericBaseClass<number> syntax. Only in JavaScript, where @extends {GenericBaseClass<number>} is used, will the documentation disappear. When extending classes that don't have any generic parameters this also still works fine.