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KonstantinBozhkov/inverse-key-value-type.ts

Last active November 14, 2021 10:53
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Typescript inverse key value type
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inverse-key-value-type.ts
type V = string | symbol | number;
export type InverseKeyValue<T extends { [K in V]: V }> = T extends { [K in infer A]: infer B }
? B extends V
? { [K in B]: A }
: never
: never;
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