/**
 * Converts a browser File or Blob to a data URI string.
 * Returns a string like `data:image/png;base64,iVBOR...`
 *
 * Works in browsers only (requires FileReader).
 *
 * Usage:
 *   const dataURI = await fileToDataURI(file)
 *   client.run({ seedImage: dataURI, ... })
 */
export declare const fileToDataURI: (file: File | Blob) => Promise<string>;
/**
 * Recursively walk a params object (objects, arrays, strings) and replace any
 * string that points to an existing local file with its raw base64 contents
 * (no `data:` prefix or MIME type — the server sniffs the real format from the
 * bytes).
 *
 * Node only. In the browser there's no filesystem, so this is a no-op: it
 * returns the value untouched and never imports `node:fs`. URLs, data URIs,
 * UUIDs, prompts, existing base64, numbers, and booleans always pass through —
 * only strings that resolve to a real file on disk are converted.
 */
export declare const encodeLocalFiles: (value: unknown) => Promise<unknown>;
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