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Hasan TEZCAN
Hasan TEZCAN

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Generic typing a hash-map with dynamic key and T array

#typescript #json #hashmap

I have a JSON like this. I need an add a type of this JSON. As you can see this is a hash-map structure let's see how we declare the hash-map interface in typescript.

hash-map json example

I declared this hash-map in my useState like that.

 const [faqCategories, setFaqCategories] = useState<FAQ[]>([]);
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We are declaring hash-map like that in typescript.

export interface FAQ { [key: string]: Category[]; }
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The whole type system like this for this JSON.

export interface Question { question: string; answer: string; } export interface Category { categoryName: string; iconName: string; questions: Question[]; } export interface FAQ { [key: string]: Category[]; }
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Source: https://stackoverflow.com/a/52913569/10694425

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