1 files changed, 70 insertions, 0 deletions
diff --git a/src/api/demo/lib/run.ts b/src/api/demo/lib/run.ts
new file mode 100644
index 000000000..8337eb2c9
--- /dev/null
+++ b/src/api/demo/lib/run.ts
@@ -0,0 +1,70 @@
+import { transform as _transform, initialize } from "esbuild-wasm";
+import initSwc, { transformSync as transformSyncSWC } from "@swc/wasm-web";
+import { Bun } from "./api";
+
+export async function start() {
+  await initialize({
+    worker: false,
+    wasmURL: "/node_modules/esbuild-wasm/esbuild.wasm",
+  });
+  await Bun.init("/bun-wasm.wasm");
+  await initSwc("/node_modules/@swc/wasm-web/wasm_bg.wasm");
+}
+
+const swcOptions = {
+  sourceMaps: false,
+  inlineSourcesContent: false,
+  jsc: {
+    target: "es2022",
+    parser: {
+      jsx: true,
+      syntax: "typescript",
+      tsx: false,
+      decorators: false,
+      dynamicImport: false,
+    },
+  },
+};
+
+export async function transform(contents, file) {
+  var result = {
+    timings: {
+      esbuild: 0,
+      bun: 0,
+      swc: 0,
+    },
+  };
+  result.timings.esbuild = performance.now();
+  result.esbuild = await _transform(contents, {
+    sourcefile: file,
+    loader: file.substring(file.lastIndexOf(".") + 1),
+  });
+  result.timings.esbuild = performance.now() - result.timings.esbuild;
+
+  result.timings.bun = performance.now();
+  result.bun = Bun.transformSync(contents, file);
+  result.timings.bun = performance.now() - result.timings.bun;
+
+  if (file.substring(file.lastIndexOf(".") + 1) === "tsx") {
+    swcOptions.jsc.parser.tsx = true;
+    swcOptions.jsc.parser.syntax = "typescript";
+  } else if (file.substring(file.lastIndexOf(".") + 1) === "jsx") {
+    swcOptions.jsc.parser.tsx = false;
+    swcOptions.jsc.parser.jsx = true;
+    swcOptions.jsc.parser.syntax = "typescript";
+  } else {
+    swcOptions.jsc.parser.tsx = false;
+    swcOptions.jsc.parser.jsx = false;
+    swcOptions.jsc.parser.syntax = "javascript";
+  }
+
+  result.timings.swc = performance.now();
+  result.swc = transformSyncSWC(contents, swcOptions);
+  result.timings.swc = performance.now() - result.timings.swc;
+
+  console.log("esbuild:", result.timings.esbuild, "ms");
+  console.log("Bun:", result.timings.bun, "ms");
+  console.log("SWC:", result.timings.swc, "ms");
+
+  return result;
+}