added function

.gitignore

@@ -1,3 +1,4 @@
+.vscode
 # Logs
 logs
 *.log

.netlify/state.json

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+{
+	"siteId": "3030a6b8-d4bc-4888-a6c6-faa4a01b1571"
+}

functions/todos-create.js

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+/* code from functions/todos-create.js */
+/* Import faunaDB sdk */
+const faunadb = require('faunadb')
+
+/* configure faunaDB Client with our secret */
+const q = faunadb.query
+const client = new faunadb.Client({
+    secret: process.env.FAUNADB_SERVER_SECRET
+})
+
+/* export our lambda function as named "handler" export */
+exports.handler = async (event, context) => {
+    /* parse the string body into a useable JS object */
+    const data = JSON.parse(event.body)
+    console.log('Function `todo-create` invoked', data)
+    const todoItem = {
+        data: data
+    }
+    /* construct the fauna query */
+    return client.query(q.Create(q.Ref('classes/todos'), todoItem))
+        .then((response) => {
+            console.log('success', response)
+            /* Success! return the response with statusCode 200 */
+            return {
+                statusCode: 200,
+                body: JSON.stringify(response)
+            }
+        }).catch((error) => {
+            console.log('error', error)
+            /* Error! return the error with statusCode 400 */
+            return {
+                statusCode: 400,
+                body: JSON.stringify(error)
+            }
+        })
+}

netlify.toml

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+[build]
+  functions = "functions"
+  # This will be run the site build
+  command = "gatsby build"
+  # This is the directory is publishing to netlify's CDN
+  publish = "public"