Files
ms/packages/websocket/src/engine.io-parser/commons.ts
2023-02-09 13:49:48 +08:00

40 lines
1.0 KiB
TypeScript

const PACKET_TYPES = Object.create(null); // no Map = no polyfill
PACKET_TYPES["open"] = "0";
PACKET_TYPES["close"] = "1";
PACKET_TYPES["ping"] = "2";
PACKET_TYPES["pong"] = "3";
PACKET_TYPES["message"] = "4";
PACKET_TYPES["upgrade"] = "5";
PACKET_TYPES["noop"] = "6";
const PACKET_TYPES_REVERSE = Object.create(null);
Object.keys(PACKET_TYPES).forEach(key => {
PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;
});
const ERROR_PACKET: Packet = { type: "error", data: "parser error" };
export { PACKET_TYPES, PACKET_TYPES_REVERSE, ERROR_PACKET };
export type PacketType =
| "open"
| "close"
| "ping"
| "pong"
| "message"
| "upgrade"
| "noop"
| "error";
// RawData should be "string | Buffer | ArrayBuffer | ArrayBufferView | Blob", but Blob does not exist in Node.js and
// requires to add the dom lib in tsconfig.json
export type RawData = any;
export interface Packet {
type: PacketType;
options?: { compress: boolean };
data?: RawData;
}
export type BinaryType = "nodebuffer" | "arraybuffer" | "blob";