Fix default import placeholder replacement in TypeScript renderer

Co-authored-by: mrlubos <[email protected]>

Author: Copilot

packages/openapi-ts/src/generate/__tests__/renderer.test.ts

@@ -0,0 +1,47 @@
+import { describe, expect, it } from 'vitest';
+
+import { TypeScriptRenderer } from '../renderer';
+
+describe('TypeScriptRenderer', () => {
+  describe('default import placeholder replacement', () => {
+    it('should replace placeholders in default imports correctly', () => {
+      const renderer = new TypeScriptRenderer();
+
+      // Create a mock project with symbols that have placeholders
+      const project = {
+        symbolIdToFiles: () => [],
+        symbols: new Map(),
+      } as any;
+
+      // Create a symbol with a placeholder
+      const symbolId = 95;
+      const symbol = {
+        id: symbolId,
+        name: 'foo',
+        placeholder: '_heyapi_95_',
+      };
+      project.symbols.set(symbolId, symbol);
+
+      // Create a mock file
+      const file = {
+        resolvedNames: new Map([[symbolId, 'foo']]),
+      } as any;
+
+      // Create bindings with a default import that has a placeholder
+      const bindings = new Map();
+      bindings.set('foo', {
+        aliases: {},
+        defaultBinding: '_heyapi_95_', // Contains placeholder that should be replaced
+        from: 'foo',
+        names: [],
+        typeNames: [],
+      });
+
+      // Generate import lines
+      const importLines = renderer['getImportLines'](bindings, file, project);
+
+      // The import should use 'foo' not '_heyapi_95_'
+      expect(importLines).toEqual(["import foo from 'foo';"]);
+    });
+  });
+});

packages/openapi-ts/src/generate/renderer.ts

@@ -281,7 +281,14 @@ export class TypeScriptRenderer implements Renderer {
       let isTypeOnly = false;
 
       if (value.defaultBinding) {
-        defaultBinding = tsc.identifier({ text: value.defaultBinding });
+        const processedDefaultBinding = renderIds(
+          value.defaultBinding,
+          (symbolId) => {
+            const symbol = project.symbols.get(symbolId);
+            return this.replacerFn({ file, project, symbol });
+          },
+        );
+        defaultBinding = tsc.identifier({ text: processedDefaultBinding });
         if (value.typeDefaultBinding) {
           isTypeOnly = true;
         }