typescript keyof
interface Person {
name: string;
age: number;
location: string;
}
type K1 = keyof Person; // "name" | "age" | "location"
type K2 = keyof Person[]; // "length" | "push" | "pop" | "concat" | ...
type K3 = keyof { [x: string]: Person }; // stringget type of element of array typescript
const animals = ['cat', 'dog', 'mouse'] as const
type Animal = typeof animals[number]
// type Animal = 'cat' | 'dog' | 'mouse'Copyright © 2021 Codeinu
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