Fix crash with deleted file (#2934)

fix #2928
microsoft · Feb 17, 2024 · 2d6e138 · 2d6e138
1 parent cb5496d
commit 2d6e138
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diff --git a/.chronus/changes/fix-crash-deleted-file-2024-1-17-1-27-24.md b/.chronus/changes/fix-crash-deleted-file-2024-1-17-1-27-24.md
@@ -0,0 +1,8 @@
+---
+# Change versionKind to one of: internal, fix, dependencies, feature, deprecation, breaking
+changeKind: fix
+packages:
+  - "@typespec/compiler"
+---
+
+[IDE] Fix issue when deleting an open file outside the IDE that would crash the language server
diff --git a/packages/compiler/src/core/util.ts b/packages/compiler/src/core/util.ts
@@ -137,7 +137,15 @@ export function mapEquals<K, V>(
 }
 
 export async function getNormalizedRealPath(host: CompilerHost, path: string) {
-  return normalizePath(await host.realpath(path));
+  try {
+    return normalizePath(await host.realpath(path));
+  } catch (error: any) {
+    // This could mean the file got deleted but VSCode still has it in memory. So keep the original path.
+    if (error.code === "ENOENT") {
+      return normalizePath(path);
+    }
+    throw error;
+  }
 }
 
 export interface FileHandlingOptions {