3 replies

TS - how to extract type from Picked array

I have the following type:

type ChallengeInput = {
  title: string,
  sections: Array<{
    title: string;
    description: string;
    videoId: string;
    collectionId: string;
    libraryId: number;
  }>;
};

type ChallengeInput = {
  title: string,
  sections: Array<{
    title: string;
    description: string;
    videoId: string;
    collectionId: string;
    libraryId: number;
  }>;
};

And I want to get the type of a Section.

type Section = Pick<ChallengeInput, "sections">[number]

type Section = Pick<ChallengeInput, "sections">[number]

However this throws an error has no matching index signature for type number...

Any suggestions?

TTC

Theo's Typesafe Cult•3y ago•

3 replies

JulieCezar

TS - how to extract type from Picked array

I have the following type:

type ChallengeInput = {
  title: string,
  sections: Array<{
    title: string;
    description: string;
    videoId: string;
    collectionId: string;
    libraryId: number;
  }>;
};

type ChallengeInput = {
  title: string,
  sections: Array<{
    title: string;
    description: string;
    videoId: string;
    collectionId: string;
    libraryId: number;
  }>;
};

And I want to get the type of a Section.

type Section = Pick<ChallengeInput, "sections">[number]

type Section = Pick<ChallengeInput, "sections">[number]

However this throws an error has no matching index signature for type number...

Any suggestions?

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