init commit,

99_references/supabase-examples/slack-clone/nextjs-slack-clone/components/MessageInput.js

@@ -0,0 +1,28 @@
+import { useState } from 'react'
+
+const MessageInput = ({ onSubmit }) => {
+  const [messageText, setMessageText] = useState('')
+
+  const submitOnEnter = (event) => {
+    // Watch for enter key
+    if (event.keyCode === 13) {
+      onSubmit(messageText)
+      setMessageText('')
+    }
+  }
+
+  return (
+    <>
+      <input
+        className="shadow appearance-none border rounded w-full py-2 px-3 text-gray-700 leading-tight focus:outline-none focus:shadow-outline"
+        type="text"
+        placeholder="Send a message"
+        value={messageText}
+        onChange={(e) => setMessageText(e.target.value)}
+        onKeyDown={(e) => submitOnEnter(e)}
+      />
+    </>
+  )
+}
+
+export default MessageInput