From 16d7cacf8da3c5e2e6cb6fd93f7944ede6b1c437 Mon Sep 17 00:00:00 2001
From: Simen Bekkhus <sbekkhus91@gmail.com>
Date: Sun, 17 Jul 2022 23:38:16 +0200
Subject: [PATCH] chore: add mention of snapshot format change in upgrade guide
 (#13038)

---
 docs/UpgradingToJest29.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/docs/UpgradingToJest29.md b/docs/UpgradingToJest29.md
index e589f35880e4..a924b1a2d17e 100644
--- a/docs/UpgradingToJest29.md
+++ b/docs/UpgradingToJest29.md
@@ -14,3 +14,16 @@ See [changelog](https://github.com/facebook/jest/blob/main/CHANGELOG.md#2900) fo
 ## Compatibility
 
 The supported Node versions are 14.15, 16.10, 18.0 and above.
+
+## Snapshot format
+
+As announced in the [Jest 28 blog post](/blog/2022/04/25/jest-28#future), Jets 29 has changed the default snapshot formatting to `{escapeString: false, printBasicPrototype: false}`.
+
+If you want to keep the old behavior, you can set the `snapshotFormat` property to:
+
+```diff
++ snapshotFormat: {
++   escapeString: true,
++   printBasicPrototype: true
++ }
+```