sync: sync upstream code

Signed-off-by: MiaoWoo <admin@yumc.pw>

src/core/server.ts

@@ -12,10 +12,9 @@
 import * as net from 'net'
 // import dgram = require("dgram");
 import * as crypto from 'crypto';
-import "./library"
+import { secp256k1, RBTree } from "./library"
 import "./crypto-library"
 import CConnect from './connect'
-import { secp256k1, RBTree } from '../core/library'
 import { STreeBuffer } from './base';
 const HARD_PACKET_PERIOD = 20;
 global.BUF_TYPE = 1;