import assertion test

1 files changed, 33 insertions, 0 deletions

diff --git a/integration/bunjs-only-snippets/transpiler.test.js b/integration/bunjs-only-snippets/transpiler.test.js
index a72c97643..d4c3e6990 100644
--- a/integration/bunjs-only-snippets/transpiler.test.js
+++ b/integration/bunjs-only-snippets/transpiler.test.js
@@ -5,6 +5,7 @@ describe("Bun.Transpiler", () => {
     loader: "tsx",
     define: {
       "process.env.NODE_ENV": JSON.stringify("development"),
+      user_undefined: "undefined",
     },
     macro: {
       react: {
@@ -209,6 +210,38 @@ describe("Bun.Transpiler", () => {
       // );
     });
 
+    it("import assert", () => {
+      expectPrinted_(
+        `import json from "./foo.json" assert { type: "json" };`,
+        `import json from "./foo.json"`
+      );
+      expectPrinted_(
+        `import json from "./foo.json";`,
+        `import json from "./foo.json"`
+      );
+      expectPrinted_(
+        `import("./foo.json", { type: "json" });`,
+        `import("./foo.json")`
+      );
+    });
+
+    it("define", () => {
+      expectPrinted_(
+        `export default typeof user_undefined === 'undefined';`,
+        `export default true`
+      );
+      expectPrinted_(
+        `export default typeof user_undefined !== 'undefined';`,
+        `export default false`
+      );
+
+      expectPrinted_(
+        `export default typeof user_undefined !== 'undefined';`,
+        `export default false`
+      );
+      expectPrinted_(`export default !user_undefined;`, `export default true`);
+    });
+
     it("decls", () => {
       // expectParseError("var x = 0", "");
       // expectParseError("let x = 0", "");