add superagent-proxy types (#41691)

types/superagent-proxy/index.d.ts

@@ -0,0 +1,17 @@
+// Type definitions for superagent-proxy 2.0
+// Project: https://github.com/TooTallNate/superagent-proxy#readme
+// Definitions by: Daniel Imhoff <https://github.com/dwieeb>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 3.0
+
+import * as superagent from 'superagent';
+
+declare module 'superagent' {
+    interface Request {
+        proxy(url: string): this;
+    }
+}
+
+declare function superagentProxy(s: typeof superagent): void;
+
+export = superagentProxy;

types/superagent-proxy/superagent-proxy-tests.ts

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+import request = require('superagent');
+import proxy = require('superagent-proxy');
+
+// Patch superagent with `.proxy()` method
+proxy(request);
+
+const callback = (err: any, res: request.Response) => {};
+const proxyUrl = 'http://localhost:8888';
+
+// using proxy
+request
+    .get('/search')
+    .proxy(proxyUrl)
+    .end(callback);

types/superagent-proxy/tsconfig.json

@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictFunctionTypes": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "superagent-proxy-tests.ts"
+    ]
+}

types/superagent-proxy/tslint.json

@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }