Support async `onLoad` callbacks in `Bun.plugin`

1 files changed, 18 insertions, 0 deletions

diff --git a/test/bun.js/bun-loader-svelte/bun-loader-svelte.ts b/test/bun.js/bun-loader-svelte/bun-loader-svelte.ts
new file mode 100644
index 000000000..f0a6e3419
--- /dev/null
+++ b/test/bun.js/bun-loader-svelte/bun-loader-svelte.ts
@@ -0,0 +1,18 @@
+import { plugin } from "bun";
+
+await plugin({
+  name: "svelte loader",
+  async setup(builder) {
+    var { compile } = await import("svelte/compiler");
+    var { readFileSync } = await import("fs");
+    await 2;
+    builder.onLoad({ filter: /\.svelte$/ }, ({ path }) => ({
+      contents: compile(readFileSync(path, "utf8"), {
+        filename: path,
+        generate: "ssr",
+      }).js.code,
+      loader: "js",
+    }));
+    await 1;
+  },
+});