fix(declarations): fix TypeScript backwards compatibility

wessberg · Apr 14, 2021 · 4f09009 · 4f09009
1 parent 9c09915
commit 4f09009
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/...undler/transformers/no-export-declaration-transformer/visitor/visit-export-declaration.ts b/...undler/transformers/no-export-declaration-transformer/visitor/visit-export-declaration.ts
@@ -6,8 +6,9 @@ export function visitExportDeclaration(options: NoExportDeclarationTransformerVi
 	if (preserveExportsWithModuleSpecifiers && node.moduleSpecifier != null) {
 		return node;
 	}
+	const isNamespaceExport = typescript.isNamespaceExport == null ? () => false : typescript.isNamespaceExport;
 
-	if (preserveAliasedExports && node.exportClause != null && (typescript.isNamespaceExport(node.exportClause) || node.exportClause.elements.some(element => element.propertyName != null))) {
+	if (preserveAliasedExports && node.exportClause != null && (isNamespaceExport(node.exportClause) || node.exportClause.elements.some(element => element.propertyName != null))) {
 		return node;
 	}
 

diff --git a/test/declaration.test.ts b/test/declaration.test.ts
@@ -631,7 +631,7 @@ test.serial("Flattens declarations. #15", withTypeScriptVersions(">=3.5"), async
 	);
 });
 
-test.serial("Flattens declarations. #16", withTypeScript, async (t, {typescript}) => {
+test("Flattens declarations. #16", withTypeScript, async (t, {typescript}) => {
 	const bundle = await generateRollupBundle(
 		[
 			{