Reduce / clean up ErrorKinds

[ry]

deno/cli/msg.fbs

Lines 87 to 146 in 963d56f

	enum ErrorKind: byte {
	NoError = 0,
	// io errors
	NotFound,
	PermissionDenied,
	ConnectionRefused,
	ConnectionReset,
	ConnectionAborted,
	NotConnected,
	AddrInUse,
	AddrNotAvailable,
	BrokenPipe,
	AlreadyExists,
	WouldBlock,
	InvalidInput,
	InvalidData,
	InvalidPath,
	TimedOut,
	Interrupted,
	WriteZero,
	Other,
	UnexpectedEof,
	BadResource,
	CommandFailed,
	// url errors
	EmptyHost,
	IdnaError,
	InvalidPort,
	InvalidIpv4Address,
	InvalidIpv6Address,
	InvalidDomainCharacter,
	RelativeUrlWithoutBase,
	RelativeUrlWithCannotBeABaseBase,
	SetHostOnCannotBeABaseUrl,
	Overflow,
	// hyper errors
	HttpUser,
	HttpClosed,
	HttpCanceled,
	HttpParse,
	HttpOther,
	TooLarge,
	// custom errors
	InvalidUri,
	InvalidSeekMode,
	OpNotAvailable,
	WorkerInitFailed,
	UnixError,
	NoAsyncSupport,
	NoSyncSupport,
	ImportMapError,
	ImportPrefixMissing,
	DenoDirError,

Before releasing v1.0 we should clean up this struct as much as possible.

for comparison here are the linux errnos http://man7.org/linux/man-pages/man3/errno.3.html

[bartlomieju]

@ry do we consider this issue resolved now that #3662, #3936 and #4058 landed?

[bartlomieju]

Number of ErrorKinds had been reduced significantly (

deno/cli/op_error.rs

Lines 33 to 60 in a29343c

	// Warning! The values in this enum are duplicated in js/errors.ts
	// Update carefully!
	#[derive(Clone, Copy, PartialEq, Debug)]
	pub enum ErrorKind {
	NotFound = 1,
	PermissionDenied = 2,
	ConnectionRefused = 3,
	ConnectionReset = 4,
	ConnectionAborted = 5,
	NotConnected = 6,
	AddrInUse = 7,
	AddrNotAvailable = 8,
	BrokenPipe = 9,
	AlreadyExists = 10,
	InvalidData = 13,
	TimedOut = 14,
	Interrupted = 15,
	WriteZero = 16,
	UnexpectedEof = 17,
	BadResource = 18,
	Http = 19,
	URIError = 20,
	TypeError = 21,
	/// This maps to window.Error - ie. a generic error type
	/// if no better context is available.
	/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error
	Other = 22,
	}

)