feat: add dependency

javascript-engine/src/lib.rs

@@ -1,11 +1,2 @@
-wit_bindgen_guest_rust::generate!("../interface.wit");
 
-struct Exports;
-
-export_smoke!(Exports);
-
-impl smoke::Smoke for Exports {
-    fn thunk() {
-        imports::thunk();
-    }
-}
+mod mem;

javascript-engine/src/mem.rs

@@ -0,0 +1,13 @@
+#[no_mangle]
+pub unsafe fn malloc(len: usize) -> *mut u8 {
+    let align = std::mem::align_of::<usize>();
+    let layout = std::alloc::Layout::from_size_align_unchecked(len, align);
+    std::alloc::alloc(layout)
+}
+
+#[no_mangle]
+pub unsafe fn free(ptr: *mut u8, len: usize) {
+    let align = std::mem::align_of::<usize>();
+    let layout = std::alloc::Layout::from_size_align_unchecked(len, align);
+    std::alloc::dealloc(ptr, layout)
+}