import type { ActionFieldDef } from './types';
export interface UploadFieldProps {
    field: ActionFieldDef;
    value: any;
    onChange: (v: any) => void;
}
/**
 * Pulls the stored file url/path out of an upload response envelope, tolerating
 * the common key shapes a host might return. Pure — exported for tests.
 */
export declare function extractUploadedValue(payload: any): string;
/** Short, human display name for an already-stored file value (a url/path). */
export declare function uploadedDisplayName(value: unknown): string;
/**
 * True when `file` satisfies an HTML-style accept list (`"image/*,.pdf,image/png"`).
 * Tokens: `type/*` (prefix), `type/sub` (exact MIME) and `.ext` (filename suffix),
 * case-insensitive. An empty/absent list accepts everything. Pure — exported for tests.
 */
export declare function fileMatchesAccept(file: {
    name: string;
    type: string;
}, accept?: string): boolean;
/**
 * Client-side gate shared by the upload widgets: `'type'` when the file does not
 * match `accept`, `'size'` when it exceeds `maxSize` (bytes), else null. Pure.
 */
export declare function validateUploadFile(file: {
    name: string;
    type: string;
    size: number;
}, opts: {
    accept?: string;
    maxSize?: number;
}): 'type' | 'size' | null;
export declare function UploadField({ field, value, onChange }: UploadFieldProps): import("react").JSX.Element;
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