feat: add typings to package (#16)

* feat: add typings to package

* fix: add missing declare keyword

* fix: request.callback should be IncomingMessage

* chore: add comma for linting

* fix: copy some options to top level

index.d.ts

@@ -0,0 +1,29 @@
+import { EventEmitter } from 'events'
+import { ClientRequest, IncomingMessage } from 'http'
+
+declare const wget: {
+  download(src: string, output: string, options?: wget.DownloadOptions): EventEmitter,
+  request(options: wget.RequestOptions, callback?: (res: IncomingMessage) => void): ClientRequest,
+}
+
+declare namespace wget {
+  type RequestOptions = {
+    gunzip?: boolean,
+  } | DownloadOptions
+
+  type DownloadOptions = {
+    protocol?: string,
+    host?: string,
+    path?: string,
+    proxy?: {
+      protocol?: string,
+      host?: string,
+      port?: number,
+      proxyAuth?: string,
+      headers?: Record<string, string>,
+    } | string,
+    method?: string,
+  }
+}
+
+export = wget

package.json

@@ -24,6 +24,7 @@
     "bin": {
         "nwget": "./bin/nwget"
     },
+    "typings": "index.d.ts",
     "dependencies": {
         "minimist": "1.2.0",
         "tunnel": "0.0.6"

test/test.js

@@ -1,9 +1,10 @@
+// @ts-check
 let crypto = require('crypto');
 let fs = require('fs');
 let expect = require('chai').expect;
 let request = require('request');
 
-let wget = require('../lib/wget');
+let wget = require('..');
 
 let baseHTTP = 'http://localhost:8884';
 let metadata = {};