import { type ArrayElement, type NonEmptyTuple, type PartiallyPartial, type TypeEq, type UnknownRecord } from 'ts-type-forge';
import { type ExcessPropertyOption, type Type } from '../type.mjs';
/**
 * Creates a Partial type. If keysToBeOptional is set, only those keys are
 * optional, otherwise, all properties are optional.
 */
export declare const partial: <const R extends UnknownRecord, const KeysToBeOptional extends NonEmptyTuple<keyof R & string>>(recordType: Type<R>, options?: Partial<Readonly<{
    keysToBeOptional: KeysToBeOptional;
    typeName: string;
    excessProperty: ExcessPropertyOption;
}>>) => PartialType<R, KeysToBeOptional>;
type PartialType<R extends UnknownRecord, KeysToBeOptional extends NonEmptyTuple<keyof R & string> | undefined = undefined> = Type<PartialValue<R, KeysToBeOptional>>;
/** Compute the partial value type. */
type PartialValue<R extends UnknownRecord, KeysToBeOptional extends NonEmptyTuple<keyof R & string> | undefined> = TypeEq<KeysToBeOptional, undefined> extends true ? Partial<R> : PartiallyPartial<R, ArrayElement<KeysToBeOptional>>;
export {};
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