Your first code block works exactly as you would expect and has been working lik... | Hacker News

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		culi 50 days ago \| parent \| context \| favorite \| on: TypeScript 6.0 RC Your first code block works exactly as you would expect and has been working like that for many years https://www.typescriptlang.org/play/?#code/C4TwDgpgBAIg9gcyg...

Incipient 50 days ago [–]

The op did say they didn't want to do these type of checks.

I thought the answer was 'instanceof'?

https://www.typescriptlang.org/docs/handbook/2/narrowing.htm...

culi 50 days ago | [–]

I see what you mean, thanks. instanceof works if you're using javascript classes but not for "types".

You can't do `instanceof Dog`. `instanceof` is a JavaScript feature

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

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