Implement virtual module support in `Bun.plugin` (#6167)

* Add support for `build.module` in `Bun.plugin`

* Another test

* Update docs

* Update isBuiltinModule.cpp

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>
Co-authored-by: Dylan Conway <dylan.conway567@gmail.com>

1 files changed, 98 insertions, 0 deletions

diff --git a/src/bun.js/bindings/isBuiltinModule.cpp b/src/bun.js/bindings/isBuiltinModule.cpp
new file mode 100644
index 000000000..b8e69f479
--- /dev/null
+++ b/src/bun.js/bindings/isBuiltinModule.cpp
@@ -0,0 +1,98 @@
+#include "root.h"
+
+static constexpr ASCIILiteral builtinModuleNamesSortedLength[] = {
+    "fs"_s,
+    "os"_s,
+    "v8"_s,
+    "vm"_s,
+    "ws"_s,
+    "bun"_s,
+    "dns"_s,
+    "net"_s,
+    "sys"_s,
+    "tls"_s,
+    "tty"_s,
+    "url"_s,
+    "http"_s,
+    "path"_s,
+    "repl"_s,
+    "util"_s,
+    "wasi"_s,
+    "zlib"_s,
+    "dgram"_s,
+    "http2"_s,
+    "https"_s,
+    "assert"_s,
+    "buffer"_s,
+    "crypto"_s,
+    "domain"_s,
+    "events"_s,
+    "module"_s,
+    "stream"_s,
+    "timers"_s,
+    "undici"_s,
+    "bun:ffi"_s,
+    "bun:jsc"_s,
+    "cluster"_s,
+    "console"_s,
+    "process"_s,
+    "bun:wrap"_s,
+    "punycode"_s,
+    "bun:test"_s,
+    "bun:main"_s,
+    "readline"_s,
+    "_tls_wrap"_s,
+    "constants"_s,
+    "inspector"_s,
+    "bun:sqlite"_s,
+    "path/posix"_s,
+    "path/win32"_s,
+    "perf_hooks"_s,
+    "stream/web"_s,
+    "util/types"_s,
+    "_http_agent"_s,
+    "_tls_common"_s,
+    "async_hooks"_s,
+    "detect-libc"_s,
+    "fs/promises"_s,
+    "querystring"_s,
+    "_http_client"_s,
+    "_http_common"_s,
+    "_http_server"_s,
+    "_stream_wrap"_s,
+    "dns/promises"_s,
+    "trace_events"_s,
+    "assert/strict"_s,
+    "child_process"_s,
+    "_http_incoming"_s,
+    "_http_outgoing"_s,
+    "_stream_duplex"_s,
+    "string_decoder"_s,
+    "worker_threads"_s,
+    "stream/promises"_s,
+    "timers/promises"_s,
+    "_stream_readable"_s,
+    "_stream_writable"_s,
+    "stream/consumers"_s,
+    "_stream_transform"_s,
+    "readline/promises"_s,
+    "inspector/promises"_s,
+    "_stream_passthrough"_s,
+    "diagnostics_channel"_s,
+};
+
+namespace Bun {
+
+bool isBuiltinModule(const String &namePossiblyWithNodePrefix) {
+  String name = namePossiblyWithNodePrefix;
+  if (name.startsWith("node:"_s))
+    name = name.substringSharingImpl(5);
+
+  for (auto &builtinModule : builtinModuleNamesSortedLength) {
+    if (name == builtinModule)
+      return true;
+  }
+  return false;
+}
+
+} // namespace Bun
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