test(bindings/ts): Test Wasm binding

bindings/binding_typescript_wasm/__tests__/transform.js

@@ -0,0 +1,40 @@
+const swc = require("../pkg");
+
+it("properly reports error", function () {
+    expect(() => {
+        swc.transformSync("Foo {}", {});
+    }).toThrow();
+});
+
+describe("trannsform", () => {
+    it("should strip types", async () => {
+        const { code } = await swc.transform(
+            `
+        export const foo: number = 1;
+        type Foo = number;
+    `,
+            {}
+        );
+        expect(code).toMatchInlineSnapshot(`
+            "export const foo = 1;
+            "
+        `);
+    });
+
+    it("should preserve enum", async () => {
+        const { code } = await swc.transform(
+            `
+            enum Foo {
+                Bar
+            }
+                `,
+            {}
+        );
+        await expect(code).toMatchInlineSnapshot(`
+            "enum Foo {
+                Bar
+            }
+            "
+        `);
+    });
+});

bindings/binding_typescript_wasm/scripts/build.sh

@@ -0,0 +1 @@
+wasm-pack build --debug --scope swc -t nodejs --features getrandom/js $@

bindings/binding_typescript_wasm/scripts/test.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+set -eu
+
+./scripts/build.sh
+npx jest $@

bindings/binding_typescript_wasm/src/lib.rs

@@ -72,7 +72,7 @@ pub fn transform(input: JsString, options: JsValue) -> Promise {
     future_to_promise(async move { transform_sync(input, options) })
 }
 
-#[wasm_bindgen]
+#[wasm_bindgen(js_name = "transformSync")]
 pub fn transform_sync(input: JsString, options: JsValue) -> Result<JsValue, JsValue> {
     let options: Options = serde_wasm_bindgen::from_value(options)?;