Bun.Transpiler – API for scanning imports/exports of JSX/TSX/TS/JS files

1 files changed, 51 insertions, 0 deletions

diff --git a/integration/bunjs-only-snippets/transpiler.test.js b/integration/bunjs-only-snippets/transpiler.test.js
new file mode 100644
index 000000000..2c59c10b8
--- /dev/null
+++ b/integration/bunjs-only-snippets/transpiler.test.js
@@ -0,0 +1,51 @@
+import { expect, it, describe } from "bun:test";
+
+describe("Bun.Transpiler", () => {
+  const transpiler = new Bun.Transpiler({
+    loader: "tsx",
+    define: {
+      "process.env.NODE_ENV": JSON.stringify("development"),
+    },
+    platform: "browser",
+  });
+
+  const code = `import { useParams } from "remix";
+  import type { LoaderFunction, ActionFunction } from "remix";
+  
+  export const loader: LoaderFunction = async ({
+    params
+  }) => {
+    console.log(params.postId);
+  };
+  
+  export const action: ActionFunction = async ({
+    params
+  }) => {
+    console.log(params.postId);
+  };
+  
+  export default function PostRoute() {
+    const params = useParams();
+    console.log(params.postId);
+  }
+
+  `;
+
+  describe("scanImports", () => {
+    it("reports import paths, excluding types", () => {
+      const imports = transpiler.scanImports(code);
+      expect(imports.filter(({ path }) => path === "remix")).toHaveLength(1);
+    });
+  });
+
+  describe("scan", () => {
+    it("reports all export names", () => {
+      const { imports, exports } = transpiler.scan(code);
+
+      expect(exports[0]).toBe("loader");
+      expect(exports[1]).toBe("action");
+      expect(exports[2]).toBe("default");
+      expect(exports).toHaveLength(3);
+    });
+  });
+});