repo: remove empty files, re-export shims, and phase_c_exports.rs

Cargo.toml

@@ -15,7 +15,6 @@ members = [
   "src/install/windows-shim",
   "src/parsers",
   "src/io",
-  "src/js",
   "src/libarchive",
   "src/md",
   "src/paths",
@@ -363,7 +362,6 @@ bun_http = { path = "src/http" }
 bun_install = { path = "src/install" }
 bun_parsers = { path = "src/parsers" }
 bun_io = { path = "src/io" }
-bun_js = { path = "src/js" }
 bun_libarchive = { path = "src/libarchive" }
 bun_md = { path = "src/md" }
 bun_paths = { path = "src/paths" }

src/bun_bin/c_abi_exports.rs

@@ -0,0 +1,29 @@
+//! C-ABI entry points that belong to the final binary rather than any
+//! library crate: the process-level panic hook and the OOM crash handler.
+//!
+//! Everything else that used to live here has a real home in `bun_jsc` /
+//! `bun_runtime` and is exported via `generate-host-exports.ts`.
+
+#![allow(non_snake_case, clippy::missing_safety_doc)]
+
+/// Panic entry point for C/C++ callers (`bindings.cpp`, `bun-usockets`).
+/// Routes through `bun_core::output::panic` so the crash report matches
+/// Rust-originated panics.
+#[unsafe(no_mangle)]
+pub(crate) extern "C" fn Bun__panic(msg: *const u8, len: usize) -> ! {
+    let bytes = if msg.is_null() {
+        &b""[..]
+    } else {
+        // SAFETY: `msg` is non-null (checked above) and the C++ caller
+        // guarantees it is valid for reading `len` bytes for this call.
+        unsafe { core::slice::from_raw_parts(msg, len) }
+    };
+    bun_core::output::panic(format_args!("{}", bstr::BStr::new(bytes)));
+}
+
+/// Out-of-memory entry point for C callers (bun-usockets) that cannot
+/// propagate an allocation failure. Same crash report as `handle_oom`.
+#[unsafe(no_mangle)]
+pub(crate) extern "C" fn Bun__outOfMemory() -> ! {
+    bun_core::out_of_memory()
+}

src/bun_bin/lib.rs

@@ -35,7 +35,7 @@
 
 use core::ffi::{c_char, c_int};
 
-mod phase_c_exports;
+mod c_abi_exports;
 
 // Force-link `bun_platform` so its `#[no_mangle]` C exports
 // (`sys_epoll_pwait2`, …) reach the linker.