Revert "simplify build"

This reverts commit 9f46666.

Author: codehz

build.ts

@@ -1,4 +1,4 @@
-import { Glob, fileURLToPath, pathToFileURL, type JavaScriptLoader } from "bun";
+import { Glob, fileURLToPath, pathToFileURL } from "bun";
 import { basename, join, relative } from "node:path";
 
 function escapeRegExp(string: string) {
@@ -52,40 +52,40 @@ export async function build({
         name: "bun-react-ssr",
         target: "browser",
         setup(build) {
-          // workaround for https://github.com/oven-sh/bun/issues/12892
-          const trimmer = new Bun.Transpiler({
-            deadCodeElimination: true,
-            treeShaking: true,
-            exports: { eliminate: ["getServerSideProps"] },
-            trimUnusedImports: true,
-          });
           build.onLoad(
             {
               filter: new RegExp(
                 "^" + escapeRegExp(absPageDir) + "/.*" + "\\.ts[x]$"
               ),
             },
             async ({ path, loader }) => {
-              const contents = await Bun.file(path).text();
-              const tsloader = new Bun.Transpiler({
-                loader: loader as JavaScriptLoader,
-                autoImportJSX: true,
-              });
-              if (
-                !tsloader.scan(contents).exports.includes("getServerSideProps")
-              ) {
-                return { contents, loader };
-              }
-              const js = await tsloader.transform(
-                await Bun.file(path).text(),
-                loader as JavaScriptLoader
-              );
+              const search = new URLSearchParams();
+              search.append("client", "1");
+              search.append("loader", loader);
               return {
-                contents: await trimmer.transform(js, "js"),
-                loader: "js",
+                contents:
+                  "export { default } from " +
+                  JSON.stringify("./" + basename(path) + "?client"),
+                loader: "ts",
               };
             }
           );
+          build.onResolve(
+            { filter: /\.ts[x]\?client$/ },
+            async ({ importer, path }) => {
+              const url = pathToFileURL(importer);
+              return {
+                path: fileURLToPath(new URL(path, url)),
+                namespace: "client",
+              };
+            }
+          );
+          build.onLoad(
+            { namespace: "client", filter: /\.ts[x]$/ },
+            async ({ path, loader }) => {
+              return { contents: await Bun.file(path).text(), loader };
+            }
+          );
         },
       },
     ],