Omit in TypeScript #typescript

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[Dev-Siri]

this was so peaceful
i forgot its typescript

[leopettecrew]

Love this in typescript. I most commonly use this when working in React, and I have an "id" prop that can be a string/number, but also want to extend the type to include div props.

[guilherme]

Great short. I still have trouble understanding satisfies tho ;-;

[janglad]

Hey Matt, something I keep having issues with is recursive types. As a simpler example, say a nested omit which takes a type A and a type B with matching optional keys of type A that can be marked as true. The output of the type only keeps keys with their type found in type A if the keys are marked true in type B. (In my actual usecase it was a "deep partial unless", where all keys are optional except the ones marked in B).

I'd love to see some tips in tricks on how to break recursive problems like these, and more complex ones down.

[teamgartz-motorsports]

I love when you need to program types to be able to program software. Super productive! 😊

[anhdunghisinh]

1 thing i don't like about "Omit" is they don't auto complete the 2nd parameters like "Pick", so i build my own Omit like this

export type LooseAutoComplete<TSuggest extends TLoose, TLoose = unknown> = TSuggest | NonNullable<unknown>;


export type ImprovedOmit<TObject, TKeys extends LooseAutoComplete<keyof TObject>> = Pick<
TObject,
Exclude<keyof TObject, TKeys>
>;

Basically i copy the original Omit type from TS and use LooseAutoComplete to provide suggestions. I don't know why TS teams didn't do this, maybe it's because performance issues or backward compatibility?

[juliohintze]

That was zen and all but WHERE'S YOUR VOICE

[sbudekc]

Do you just animate a pointer in editing?? That's so pleasant

[shaded]

I like it better with you just chilling in the corner talking though something :(

[athulgeorge]

Hey Matt, since omit doesn’t autocomplete the second parameter, can you make a new OmitStrict type that does?