Add a little benchmark for transpiling from inside JS

1 files changed, 38 insertions, 0 deletions

diff --git a/bench/snippets/transpiler.mjs b/bench/snippets/transpiler.mjs
new file mode 100644
index 000000000..b4c1d390d
--- /dev/null
+++ b/bench/snippets/transpiler.mjs
@@ -0,0 +1,38 @@
+import { readFileSync } from "fs";
+
+var transformSync;
+var opts;
+if (process.isBun) {
+  const transpiler = new Bun.Transpiler({ loader: "jsx" });
+  transformSync = transpiler.transformSync.bind(transpiler);
+  opts = "jsx";
+} else if (process.env["USE_ESBUILD"]) {
+  try {
+    const esbuild = await import("esbuild");
+    transformSync = esbuild.transformSync;
+    opts = { loader: "jsx" };
+  } catch (exception) {
+    throw exception;
+  }
+} else if (process.env["USE_SWC"]) {
+  try {
+    const swc = await import("@swc/core");
+    transformSync = swc.transformSync;
+    opts = {
+      sourceMaps: false,
+      inlineSourcesContent: false,
+      jsc: {
+        target: "es2022",
+        parser: {
+          jsx: true,
+        },
+      },
+    };
+  } catch (exception) {
+    throw exception;
+  }
+}
+
+const code = readFileSync("src/test/fixtures/simple.jsx", "utf8");
+
+transformSync(code, opts);