Add typescript support (tewarid#36)

Author: F3n67u

index.d.ts

@@ -0,0 +1,64 @@
+import { Socket } from 'net';
+import { TLSSocket } from 'tls';
+
+// Name or IP address of service host(s); if this is a list, performs round-robin load balancing
+type ServiceHost = string | string[];
+
+// Service port number(s); if this a list, it should have as many entries as serviceHost 
+type ServicePort = string | number | number[];
+
+interface ContextBase {
+    buffers: Buffer[];
+    connect: boolean;
+}
+
+interface UpstreamContext extends ContextBase {
+    proxySocket: Socket | TLSSocket;
+}
+
+interface DownstreamContext  extends ContextBase {
+    serviceSocket: Socket | TLSSocket;
+}
+
+interface TcpProxyOptions {
+    // Name or IP address of host
+    hostname: string;
+    // IP address of interface to use to connect to service
+    localAddress: string;
+    // Port number to use to connect to service
+    localPort: number;
+    // Be quiet, default: true
+    quiet: boolean;
+    // Use TLS 1.2 with clients; specify both to also use TLS 1.2 with service
+    tls: boolean;
+    // Do not accept invalid certificate, default: true
+    rejectUnauthorized: boolean;
+    // Private key file path, for example: ./cert.pfx
+    pfx: string;
+    // Passphrase to access private key file
+    passphrase: string;
+    // List of authorized users
+    identUsers: string[];
+    // List of allowed IPs
+    allowedIPs: string[];
+    serviceHostSelected: (proxySocket: Socket | TLSSocket, i: number) => number;
+    upstream: (context: UpstreamContext, data: Buffer) => Buffer;
+    downstream: (context: DownstreamContext, data: Buffer) => Buffer;
+}
+
+declare class TcpProxy {
+    constructor(
+        proxyPort: number, 
+        serviceHost: ServiceHost, 
+        servicePort: ServicePort, 
+        options?: Partial<TcpProxyOptions>
+    ); 
+    end(): void;
+}
+
+export function createProxy(
+    proxyPort: number, 
+    serviceHost: ServiceHost, 
+    servicePort: ServicePort, 
+    options?: Partial<TcpProxyOptions>
+): TcpProxy;

package.json

@@ -4,6 +4,7 @@
     "license": "MIT",
     "version": "0.0.26",
     "main": "index.js",
+    "types": "./index.d.ts",
     "repository": {
         "type": "git",
         "url": "https://github.com/tewarid/node-tcp-proxy.git"