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index 0000000000000000000000000000000000000000..28f1ba7565f46fb5074ad9a4f07c4cfc86dff4cc
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+ }
+}
diff --git a/codeExamples/week3/graphql-demo/package.json b/codeExamples/week3/graphql-demo/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..75e931feef0585752c986a9310ae614e1d5d661c
--- /dev/null
+++ b/codeExamples/week3/graphql-demo/package.json
@@ -0,0 +1,16 @@
+{
+ "name": "graphql-demo",
+ "version": "1.0.0",
+ "description": "",
+ "main": "index.js",
+ "scripts": {
+ "test": "echo \"Error: no test specified\" && exit 1"
+ },
+ "author": "",
+ "license": "ISC",
+ "dependencies": {
+ "express": "^4.17.2",
+ "express-graphql": "^0.12.0",
+ "graphql": "^16.2.0"
+ }
+}
diff --git a/codeExamples/week3/graphql-demo/server.js b/codeExamples/week3/graphql-demo/server.js
new file mode 100644
index 0000000000000000000000000000000000000000..fee4653017af26e2a74e032e279d866a110962d0
--- /dev/null
+++ b/codeExamples/week3/graphql-demo/server.js
@@ -0,0 +1,26 @@
+var express = require('express');
+var { graphqlHTTP } = require('express-graphql');
+var { buildSchema } = require('graphql');
+
+// Construct a schema, using GraphQL schema language
+var schema = buildSchema(`
+ type Query {
+ hello: String
+ }
+`);
+
+// The root provides a resolver function for each API endpoint
+var root = {
+ hello: () => {
+ return 'Hello world!';
+ },
+};
+
+var app = express();
+app.use('/graphql', graphqlHTTP({
+ schema: schema,
+ rootValue: root,
+ graphiql: true,
+}));
+app.listen(4000);
+console.log('Running a GraphQL API server at http://localhost:4000/graphql');
\ No newline at end of file