From c88dd5033d9577286ce86e4acc0c49c96fb308de Mon Sep 17 00:00:00 2001
From: Andrii Chebukin <XperiAndri@Outlook.com>
Date: Mon, 7 Aug 2023 20:11:13 +0400
Subject: [PATCH] Fixed `NullReferenceException` on missing `version` in
 `global.json`

---
 src/app/Fake.DotNet.Cli/DotNet.fs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/app/Fake.DotNet.Cli/DotNet.fs b/src/app/Fake.DotNet.Cli/DotNet.fs
index c1bf41ec76c..2503fe4c176 100644
--- a/src/app/Fake.DotNet.Cli/DotNet.fs
+++ b/src/app/Fake.DotNet.Cli/DotNet.fs
@@ -66,8 +66,12 @@ module DotNet =
                 let content = File.ReadAllText globalJson.FullName
                 let json = JObject.Parse content
                 let sdk = json.Item("sdk") :?> JObject
-                let version = sdk.Property("version").Value.ToString()
-                Some version
+                match sdk.Property("version") with
+                | null -> None
+                | version ->
+                    let versionValue = version.Value.ToString()
+                    let _ = Version.Parse (versionValue)
+                    Some versionValue
             with exn ->
                 failwithf "Could not parse `sdk.version` from global.json at '%s': %s" globalJson.FullName exn.Message