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ts-toolbelt

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TypeScript's largest utility library

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import { Keys } from './Keys'; /** * Get the known keys of an [[Object]] * @param O * @returns [[Key]] * @example * ```ts * ``` */ export declare type KnownKeys<O extends object> = { [K in keyof O]: string extends K ? never : number extends K ? never : K; } extends { [K in keyof O]: infer U; } ? U & Keys<O> : never;