/**
 * `CompletionInput` — a text field wired to MCP `completion/complete`. As the
 * human types, it asks the provided `fetchCompletions` (a thin wrapper over the
 * MCP completions capability) for argument suggestions and renders them as a
 * selectable list; picking one fills the field. A fetch failure clears the
 * suggestions and surfaces through `onError` — never a silent swallow.
 *
 * The field is a `tai-input` and its popup wears the Select popup's classes
 * (`tai-select-content` / `tai-select-item`), so a suggestion list and a select
 * list are the same object to a reader.
 *
 * Reusable by any feature; the intended consumer is a `SchemaForm` string field
 * that has a completion provider for its tool/prompt/resource argument.
 */
import type { ReactNode } from 'react';
export interface CompletionInputProps {
    readonly value: string;
    readonly onChange: (value: string) => void;
    /** Fetch argument completions for the current input value. */
    readonly fetchCompletions: (value: string) => Promise<readonly string[]>;
    /** Surfaced (not swallowed) when a completion fetch fails. */
    readonly onError?: (error: unknown) => void;
    readonly placeholder?: string;
}
/**
 * A completion-backed text input. Suggestions refresh on every edit (a
 * per-request sequence guard drops a stale response) and render as an ARIA
 * listbox; selecting an option fills the field and clears the list.
 */
export declare function CompletionInput({ value, onChange, fetchCompletions, onError, placeholder, }: CompletionInputProps): ReactNode;
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