denoland-deno/js/errors.ts

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.

/** A Deno specific error.  The `kind` property is set to a specific error code
 * which can be used to in application logic.
 *
 *       try {
 *         somethingThatMightThrow();
 *       } catch (e) {
 *         if (
 *           e instanceof Deno.DenoError &&
 *           e.kind === Deno.ErrorKind.Overflow
 *         ) {
 *           console.error("Overflow error!");
 *         }
 *       }
 *
 */
export class DenoError<T extends ErrorKind> extends Error {
  constructor(readonly kind: T, msg: string) {
    super(msg);
    this.name = ErrorKind[kind];
  }
}

// Warning! The values in this enum are duplicated in cli/msg.rs
// Update carefully!
export enum ErrorKind {
  NoError = 0,
  NotFound = 1,
  PermissionDenied = 2,
  ConnectionRefused = 3,
  ConnectionReset = 4,
  ConnectionAborted = 5,
  NotConnected = 6,
  AddrInUse = 7,
  AddrNotAvailable = 8,
  BrokenPipe = 9,
  AlreadyExists = 10,
  WouldBlock = 11,
  InvalidInput = 12,
  InvalidData = 13,
  TimedOut = 14,
  Interrupted = 15,
  WriteZero = 16,
  Other = 17,
  UnexpectedEof = 18,
  BadResource = 19,
  CommandFailed = 20,
  EmptyHost = 21,
  IdnaError = 22,
  InvalidPort = 23,
  InvalidIpv4Address = 24,
  InvalidIpv6Address = 25,
  InvalidDomainCharacter = 26,
  RelativeUrlWithoutBase = 27,
  RelativeUrlWithCannotBeABaseBase = 28,
  SetHostOnCannotBeABaseUrl = 29,
  Overflow = 30,
  HttpUser = 31,
  HttpClosed = 32,
  HttpCanceled = 33,
  HttpParse = 34,
  HttpOther = 35,
  TooLarge = 36,
  InvalidUri = 37,
  InvalidSeekMode = 38,
  OpNotAvailable = 39,
  WorkerInitFailed = 40,
  UnixError = 41,
  NoAsyncSupport = 42,
  NoSyncSupport = 43,
  ImportMapError = 44,
  InvalidPath = 45,
  ImportPrefixMissing = 46,
  UnsupportedFetchScheme = 47,
  TooManyRedirects = 48,
  Diagnostic = 49,
  JSError = 50
}