[fresh] add typings (#18990)

types/fresh/fresh-tests.ts

@@ -0,0 +1,28 @@
+/// <reference types="node" />
+import fresh = require('fresh');
+import * as http from 'http';
+
+let reqHeaders = { 'if-none-match': '"foo"' };
+let resHeaders = { etag: '"bar"' };
+// $ExpectType boolean
+fresh(reqHeaders, resHeaders);
+
+const server = http.createServer((req, res) => {
+    if (isFresh(req, res)) {
+        res.statusCode = 304;
+        res.end();
+        return;
+    }
+
+    res.statusCode = 200;
+    res.end('hello, world!');
+});
+
+function isFresh(req: http.IncomingMessage, res: http.ServerResponse) {
+    return fresh(req.headers, {
+        etag: res.getHeader('ETag'),
+        'last-modified': res.getHeader('Last-Modified')
+    });
+}
+
+server.listen(3000);

types/fresh/index.d.ts

@@ -0,0 +1,14 @@
+// Type definitions for fresh 0.5
+// Project: https://github.com/jshttp/fresh#readme
+// Definitions by: BendingBender <https://github.com/BendingBender>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = fresh;
+
+declare function fresh(reqHeaders: fresh.Headers, resHeaders: fresh.Headers): boolean;
+
+declare namespace fresh {
+    interface Headers {
+        [header: string]: string | string[] | number | undefined;
+    }
+}

types/fresh/tsconfig.json

@@ -0,0 +1,22 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "fresh-tests.ts"
+    ]
+}

types/fresh/tslint.json

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