fix: handle missing fields in migrate script (#10221)

sveltejs · Jun 22, 2023 · 91265ae · 91265ae
1 parent c52bd3d
commit 91265ae
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Showing 2 changed files with 9 additions and 4 deletions.
diff --git a/.changeset/tame-boats-attend.md b/.changeset/tame-boats-attend.md
@@ -0,0 +1,5 @@
+---
+'svelte-migrate': patch
+---
+
+fix: handle missing fields in migrate script
diff --git a/packages/migrate/migrations/svelte-4/migrate.js b/packages/migrate/migrations/svelte-4/migrate.js
@@ -21,12 +21,12 @@ export function update_pkg_json_content(content) {
 	 * @param {string} [additional]
 	 */
 	function update_pkg(name, version, additional = '') {
-		if (pkg.dependencies[name]) {
-			log_migration(`Updated ${name} to ${version}${additional}`);
+		if (pkg.dependencies?.[name]) {
+			log_migration(`Updated ${name} to ${version} ${additional}`);
 			pkg.dependencies[name] = version;
 		}
-		if (pkg.devDependencies[name]) {
-			log_migration(`Updated ${name} to ${version}${additional}`);
+		if (pkg.devDependencies?.[name]) {
+			log_migration(`Updated ${name} to ${version} ${additional}`);
 			pkg.devDependencies[name] = version;
 		}
 	}