From 518fc63224860d2ac7bcd23cfda7df3a2799556f Mon Sep 17 00:00:00 2001
From: Simon Willison <swillison@gmail.com>
Date: Sun, 13 Nov 2022 22:06:45 -0800
Subject: [PATCH] API explorer: no error if you format JSON on empty string

Refs #1871
---
 datasette/templates/api_explorer.html | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/datasette/templates/api_explorer.html b/datasette/templates/api_explorer.html
index f8160e0a..ea95c023 100644
--- a/datasette/templates/api_explorer.html
+++ b/datasette/templates/api_explorer.html
@@ -53,6 +53,9 @@
 document.querySelector('#json-format').addEventListener('click', (ev) => {
   ev.preventDefault();
   let json = document.querySelector('textarea[name="json"]').value.trim();
+  if (!json) {
+    return;
+  }
   try {
     const parsed = JSON.parse(json);
     document.querySelector('textarea[name="json"]').value = JSON.stringify(parsed, null, 2);