/// <reference types="node" />

import { Blob } from 'buffer'
import { DOMException, Event, EventInit, EventTarget } from './patch'

export declare class FileReader {
  __proto__: EventTarget & FileReader

  constructor ()

  readAsArrayBuffer (blob: Blob): void
  readAsBinaryString (blob: Blob): void
  readAsText (blob: Blob, encoding?: string): void
  readAsDataURL (blob: Blob): void

  abort (): void

  static readonly EMPTY = 0
  static readonly LOADING = 1
  static readonly DONE = 2

  readonly EMPTY = 0
  readonly LOADING = 1
  readonly DONE = 2

  readonly readyState: number

  readonly result: string | ArrayBuffer | null

  readonly error: DOMException | null

  onloadstart: null | ((this: FileReader, event: ProgressEvent) => void)
  onprogress: null | ((this: FileReader, event: ProgressEvent) => void)
  onload: null | ((this: FileReader, event: ProgressEvent) => void)
  onabort: null |  ((this: FileReader, event: ProgressEvent) => void)
  onerror: null | ((this: FileReader, event: ProgressEvent) => void)
  onloadend: null | ((this: FileReader, event: ProgressEvent) => void)
}

export interface ProgressEventInit extends EventInit {
  lengthComputable?: boolean
  loaded?: number
  total?: number
}

export declare class ProgressEvent {
  __proto__: Event & ProgressEvent

  constructor (type: string, eventInitDict?: ProgressEventInit)

  readonly lengthComputable: boolean
  readonly loaded: number
  readonly total: number
}