Thanks for the reply.

> RegExpExecArray gives you a structure that looks different between the jsdoc version and the typescript version.

> The typescript version has `.groups` inside RegExpExecArray.

The JSDoc version has `.groups` too, and it appears to be typed identically to the TypeScript version given similar configuration.

Here's the TypeScript version: https://www.typescriptlang.org/play/?target=5&strictNullChec...

And here's the JSDoc version: https://www.typescriptlang.org/play/?target=5&strictNullChec...

Could you show me what you mean in the playground? You can change it to JSDoc mode by selecting "JavaScript" in the "Lang" dropdown in the "TS Config" tab.