import { type Context } from 'preact';
export interface OptionalContext<T> extends Context<T | undefined> {
    readonly use: UseOptionalContextHook<T>;
}
export interface OptionalContextOptions<_T> {
    displayName?: string;
    whenMissing?(): Error | void;
}
export interface UseOptionalContextHook<T> {
    (options?: {
        optional?: false;
    }): NonNullable<T>;
    (options: {
        optional: boolean;
    }): NonNullable<T> | undefined;
}
export declare function createOptionalContext<T>(defaultValue?: T, { whenMissing, displayName }?: OptionalContextOptions<T>): OptionalContext<T>;
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