add CORS to node-graphql example

Author: tj

oss/node-graphql/Readme.md

@@ -1,7 +1,7 @@
 
 # Node GraphQL
 
-GraphQL server.
+GraphQL server with CORS.
 
 ## Setup
 
@@ -17,6 +17,31 @@ $ up
 
 ## Usage
 
+With curl:
+
 ```
 $ curl -d '{ "query": "{ pet(id: 0) { name }}" }' `up url`?pretty
 ```
+
+With `fetch()` in the browser:
+
+``js
+const body = JSON.stringify({
+  query: `query {
+    pet(id: 2) {
+      name
+    }
+  }`
+})
+
+const res = await fetch('http://localhost:3000', {
+  headers: { 'Content-Type': 'application/json' },
+  method: 'POST',
+  body
+})
+
+console.log(res)
+console.log(await res.json())
+```
+
+See the [CORS](https://up.docs.apex.sh/#configuration.cross_origin_resource_sharing) second of the documentation for details.

oss/node-graphql/up.json

@@ -1,3 +1,7 @@
 {
-  "name": "app"
+  "name": "app",
+  "cors": {
+    "enable": true,
+    "debug": true
+  }
 }