Update Package.json.

dist/build/compile.js

@@ -0,0 +1,74 @@
+import { resolve } from "path";
+import { readFileSync } from "fs";
+const shimPath = resolve(import.meta.dir, "lightningcss-wasm-shim.ts");
+const wasmBytes = readFileSync(resolve(import.meta.dir, "node_modules/lightningcss-wasm/lightningcss_node.wasm"));
+const wasmBase64 = wasmBytes.toString("base64");
+const result = await Bun.build({
+    entrypoints: ["./src/commands/index.ts"],
+    outdir: "./build",
+    target: "bun",
+    plugins: [
+        {
+            name: "alias-lightningcss-to-wasm",
+            setup(build) {
+                build.onResolve({ filter: /^lightningcss$/ }, () => {
+                    return {
+                        path: "lightningcss",
+                        namespace: "lcss-wasm-shim",
+                    };
+                });
+                build.onResolve({ filter: /^lightningcss\// }, () => {
+                    return {
+                        path: "lightningcss",
+                        namespace: "lcss-wasm-shim",
+                    };
+                });
+                build.onLoad({ filter: /.*/, namespace: "lcss-wasm-shim" }, () => {
+                    return {
+                        contents: `
+                            import init, {
+                                transform as wasmTransform,
+                                transformStyleAttribute as wasmTransformStyleAttribute,
+                                bundle as wasmBundle,
+                                bundleAsync as wasmBundleAsync,
+                                Features,
+                                browserslistToTargets,
+                                composeVisitors,
+                            } from "lightningcss-wasm";
+
+                            const wasmBytes = Uint8Array.from(atob("${wasmBase64}"), c => c.charCodeAt(0));
+                            await init(wasmBytes);
+
+                            export {
+                                wasmTransform as transform,
+                                wasmTransformStyleAttribute as transformStyleAttribute,
+                                wasmBundle as bundle,
+                                wasmBundleAsync as bundleAsync,
+                                Features,
+                                browserslistToTargets,
+                                composeVisitors,
+                            };
+                        `,
+                        loader: "ts",
+                    };
+                });
+            },
+        },
+    ],
+});
+if (!result.success) {
+    console.error("Build failed:", result.logs);
+    process.exit(1);
+}
+Bun.spawnSync({
+    cmd: [
+        "bun",
+        "build",
+        "./build/index.js",
+        "--compile",
+        "--outfile",
+        "bin/bunext",
+    ],
+    stdout: "inherit",
+    stderr: "inherit",
+});

dist/build/lightningcss-wasm-shim.js

@@ -0,0 +1,9 @@
+import { readFileSync } from "fs";
+import { resolve, dirname } from "path";
+import { fileURLToPath } from "url";
+import init, { transform as wasmTransform, transformStyleAttribute as wasmTransformStyleAttribute, bundle as wasmBundle, bundleAsync as wasmBundleAsync, Features, browserslistToTargets, composeVisitors, } from "lightningcss-wasm";
+// Resolve the .wasm file at build time — Bun's bundler will inline this
+// as a static path that gets embedded into the bundle.
+const wasmBytes = readFileSync(require.resolve("lightningcss-wasm/lightningcss_node.wasm"));
+await init(wasmBytes.toString());
+export { wasmTransform as transform, wasmTransformStyleAttribute as transformStyleAttribute, wasmBundle as bundle, wasmBundleAsync as bundleAsync, Features, browserslistToTargets, composeVisitors, };