import { Effect } from 'effect';
import { FileReadError } from './error.js';
import type { File } from './file.js';
/**
 * Reads the file's contents as a UTF-8 string. Mirrors Elm's `File.toString`.
 *
 * Fails with a `FileReadError` if the browser's `FileReader` encounters an
 * error (e.g. the file was deleted while reading). Handle failures with
 * `Effect.catch` to convert them into a failure Message.
 *
 * @example
 * ```typescript
 * ReadResumeText(
 *   File.readAsText(file).pipe(
 *     Effect.map(text => GotResumeText({ text })),
 *     Effect.catch(error => Effect.succeed(FailedReadResume({ error: error.reason }))),
 *   ),
 * )
 * ```
 */
export declare const readAsText: (file: File) => Effect.Effect<string, FileReadError>;
/**
 * Reads the file's contents as a base64-encoded data URL. Useful for rendering
 * image previews without uploading the file first. Mirrors Elm's `File.toUrl`.
 *
 * @example
 * ```typescript
 * ReadImagePreview(
 *   File.readAsDataUrl(imageFile).pipe(
 *     Effect.map(dataUrl => GotImagePreview({ dataUrl })),
 *     Effect.catch(error => Effect.succeed(FailedReadImage({ error: error.reason }))),
 *   ),
 * )
 * ```
 */
export declare const readAsDataUrl: (file: File) => Effect.Effect<string, FileReadError>;
/**
 * Reads the file's contents as raw binary data. Mirrors Elm's `File.toBytes`.
 *
 * Use this when you need the full binary payload (e.g. to upload, hash, or
 * parse a custom file format). For images you usually want `readAsDataUrl`
 * instead.
 *
 * @example
 * ```typescript
 * UploadFile(
 *   File.readAsArrayBuffer(file).pipe(
 *     Effect.flatMap(buffer => uploadToServer(buffer)),
 *     Effect.map(() => SucceededUpload()),
 *     Effect.catch(error => Effect.succeed(FailedUpload({ reason: String(error) }))),
 *   ),
 * )
 * ```
 */
export declare const readAsArrayBuffer: (file: File) => Effect.Effect<ArrayBuffer, FileReadError>;
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