diff --git node/deps/v8/include/v8-initialization.h node/deps/v8/include/v8-initialization.h
index 406f1d0ba5..fb8eea420d 100644
--- node/deps/v8/include/v8-initialization.h
+++ node/deps/v8/include/v8-initialization.h
@@ -98,6 +98,10 @@ class V8_EXPORT V8 {
   static void SetFlagsFromCommandLine(int* argc, char** argv,
                                       bool remove_flags);
 
+  static void EnableCompilationForSourcelessUse();
+  static void DisableCompilationForSourcelessUse();
+  static void FixSourcelessScript(Isolate* v8_isolate, Local<UnboundScript> script);
+
   /** Get the version string. */
   static const char* GetVersion();
 
diff --git node/deps/v8/src/api/api.cc node/deps/v8/src/api/api.cc
index 9ef4e3b4a6..34cabe171c 100644
--- node/deps/v8/src/api/api.cc
+++ node/deps/v8/src/api/api.cc
@@ -469,6 +469,28 @@ void V8::SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags) {
                                        HelpOptions(HelpOptions::kDontExit));
 }
 
+bool save_lazy;
+bool save_predictable;
+
+void V8::EnableCompilationForSourcelessUse() {
+  save_lazy = i::v8_flags.lazy;
+  i::v8_flags.lazy = false;
+  save_predictable = i::v8_flags.predictable;
+  i::v8_flags.predictable = true;
+}
+
+void V8::DisableCompilationForSourcelessUse() {
+  i::v8_flags.lazy = save_lazy;
+  i::v8_flags.predictable = save_predictable;
+}
+
+void V8::FixSourcelessScript(Isolate* v8_isolate, Local<UnboundScript> unbound_script) {
+  auto isolate = reinterpret_cast<i::Isolate*>(v8_isolate);
+  auto function_info = i::Cast<i::SharedFunctionInfo>(Utils::OpenHandle(*unbound_script));
+  i::Handle<i::Script> script(i::Cast<i::Script>(function_info->script()), isolate);
+  script->SetSource(isolate, script,  isolate->factory()->empty_string());
+}
+
 RegisteredExtension* RegisteredExtension::first_extension_ = nullptr;
 
 RegisteredExtension::RegisteredExtension(std::unique_ptr<Extension> extension)
diff --git node/deps/v8/src/codegen/compiler.cc node/deps/v8/src/codegen/compiler.cc
index 2dc782458e..0cddfbbbc4 100644
--- node/deps/v8/src/codegen/compiler.cc
+++ node/deps/v8/src/codegen/compiler.cc
@@ -3988,7 +3988,7 @@ MaybeDirectHandle<SharedFunctionInfo> GetSharedFunctionInfoForScriptImpl(
     maybe_script = lookup_result.script();
     maybe_result = lookup_result.toplevel_sfi();
     is_compiled_scope = lookup_result.is_compiled_scope();
-    if (!maybe_result.is_null()) {
+    if (!maybe_result.is_null() && source->length()) {
       compile_timer.set_hit_isolate_cache();
     } else if (can_consume_code_cache) {
       compile_timer.set_consuming_code_cache();
diff --git node/deps/v8/src/compiler/wasm-compiler.cc node/deps/v8/src/compiler/wasm-compiler.cc
index 632d54de8c..cbf91f9d6c 100644
--- node/deps/v8/src/compiler/wasm-compiler.cc
+++ node/deps/v8/src/compiler/wasm-compiler.cc
@@ -1090,11 +1090,15 @@ wasm::WasmCompilationResult CompileWasmImportCallWrapper(
                                  "wasm-to-js-%d-", static_cast<int>(kind));
   PrintSignature(base::VectorOf(func_name, kMaxNameLen) + name_prefix_len, sig,
                  '-');
+  wasm::WrapperCompilationInfo info;
+  info.code_kind = CodeKind::WASM_TO_JS_FUNCTION;
+  info.import_kind = kind;
+  info.expected_arity = expected_arity;
+  info.suspend = suspend;
 
   auto result = Pipeline::GenerateCodeForWasmNativeStubFromTurboshaft(
       sig,
-      wasm::WrapperCompilationInfo{CodeKind::WASM_TO_JS_FUNCTION, kind,
-                                   expected_arity, suspend},
+      info,
       func_name, WasmStubAssemblerOptions());
 
   if (V8_UNLIKELY(v8_flags.trace_wasm_compilation_times)) {
diff --git node/deps/v8/src/heap/marking-visitor-inl.h node/deps/v8/src/heap/marking-visitor-inl.h
index 8ac9d6d49b..7a241f2de7 100644
--- node/deps/v8/src/heap/marking-visitor-inl.h
+++ node/deps/v8/src/heap/marking-visitor-inl.h
@@ -517,6 +517,13 @@ bool MarkingVisitorBase<ConcreteVisitor>::HasBytecodeArrayForFlushing(
 template <typename ConcreteVisitor>
 bool MarkingVisitorBase<ConcreteVisitor>::ShouldFlushCode(
     Tagged<SharedFunctionInfo> sfi) const {
+  auto script_obj = sfi->script();
+  if (!IsUndefined(script_obj)) {
+    auto script = Cast<Script>(script_obj);
+    if (IsUndefined(script->source())) {
+      return false;
+    }
+  }
   // This method is used both for flushing bytecode and baseline code.
   // During last resort GCs and stress testing we consider all code old.
   return IsOld(sfi) || V8_UNLIKELY(IsForceFlushingEnabled(code_flush_mode_));
diff --git node/deps/v8/src/objects/js-function.cc node/deps/v8/src/objects/js-function.cc
index a44e3fd6c0..e220a5bc0f 100644
--- node/deps/v8/src/objects/js-function.cc
+++ node/deps/v8/src/objects/js-function.cc
@@ -1417,6 +1417,9 @@ DirectHandle<String> JSFunction::ToString(Isolate* isolate,
     DirectHandle<Object> maybe_class_positions = JSReceiver::GetDataProperty(
         isolate, function, isolate->factory()->class_positions_symbol());
     if (IsClassPositions(*maybe_class_positions)) {
+      if (IsUndefined(Cast<String>(Cast<Script>(shared_info->script())->source()))) {
+        return isolate->factory()->NewStringFromAsciiChecked("class {}");
+      }
       Tagged<ClassPositions> class_positions =
           Cast<ClassPositions>(*maybe_class_positions);
       int start_position = class_positions->start();
diff --git node/deps/v8/src/objects/script.cc node/deps/v8/src/objects/script.cc
index a2078b538c..1468ece463 100644
--- node/deps/v8/src/objects/script.cc
+++ node/deps/v8/src/objects/script.cc
@@ -118,7 +118,11 @@ void Script::InitLineEndsInternal(IsolateT* isolate,
 
 void Script::SetSource(Isolate* isolate, DirectHandle<Script> script,
                        DirectHandle<String> source) {
-  script->set_source(*source);
+  if (source->length() > 0) {
+    script->set_source(*source);
+  } else {
+    script->set_source(*isolate->factory()->undefined_value());
+  }
   if (isolate->NeedsSourcePositions()) {
     InitLineEnds(isolate, script);
   } else if (script->line_ends() ==
diff --git node/deps/v8/src/parsing/parsing.cc node/deps/v8/src/parsing/parsing.cc
index 31758fdfed..483192fc35 100644
--- node/deps/v8/src/parsing/parsing.cc
+++ node/deps/v8/src/parsing/parsing.cc
@@ -42,6 +42,7 @@ bool ParseProgram(ParseInfo* info, DirectHandle<Script> script,
   DCHECK(info->flags().is_toplevel());
   DCHECK_NULL(info->literal());
 
+  if (IsUndefined(Cast<String>(script->source()))) return false;
   VMState<PARSER> state(isolate);
 
   // Create a character stream for the parser.
@@ -75,6 +76,8 @@ bool ParseFunction(ParseInfo* info,
 
   // Create a character stream for the parser.
   DirectHandle<Script> script(Cast<Script>(shared_info->script()), isolate);
+  if (IsUndefined(Cast<String>(script->source()))) return false;
+
   Handle<String> source(Cast<String>(script->source()), isolate);
   uint32_t start_pos = shared_info->StartPosition();
   uint32_t end_pos = shared_info->EndPosition();
diff --git node/deps/v8/src/snapshot/code-serializer.cc node/deps/v8/src/snapshot/code-serializer.cc
index 6149ee8f1d..133659e328 100644
--- node/deps/v8/src/snapshot/code-serializer.cc
+++ node/deps/v8/src/snapshot/code-serializer.cc
@@ -776,10 +776,6 @@ SerializedCodeSanityCheckResult SerializedCodeData::SanityCheck(
 
 SerializedCodeSanityCheckResult SerializedCodeData::SanityCheckJustSource(
     uint32_t expected_source_hash) const {
-  uint32_t source_hash = GetHeaderValue(kSourceHashOffset);
-  if (source_hash != expected_source_hash) {
-    return SerializedCodeSanityCheckResult::kSourceMismatch;
-  }
   return SerializedCodeSanityCheckResult::kSuccess;
 }
 
@@ -796,13 +792,12 @@ SerializedCodeSanityCheckResult SerializedCodeData::SanityCheckWithoutSource(
   if (version_hash != Version::Hash()) {
     return SerializedCodeSanityCheckResult::kVersionMismatch;
   }
-  uint32_t flags_hash = GetHeaderValue(kFlagHashOffset);
-  if (flags_hash != FlagList::Hash()) {
-    return SerializedCodeSanityCheckResult::kFlagsMismatch;
-  }
   uint32_t ro_snapshot_checksum =
       GetHeaderValue(kReadOnlySnapshotChecksumOffset);
   if (ro_snapshot_checksum != expected_ro_snapshot_checksum) {
+    // for debugging snapshot checkum issues
+    // PrintF("[pkg] ReadOnlySnapshotChecksum mismatch: code=%08x built=%08x\n",
+    //  ro_snapshot_checksum, expected_ro_snapshot_checksum);
     return SerializedCodeSanityCheckResult::kReadOnlySnapshotChecksumMismatch;
   }
   uint32_t payload_length = GetHeaderValue(kPayloadLengthOffset);
diff --git node/deps/v8/src/snapshot/read-only-serializer.cc node/deps/v8/src/snapshot/read-only-serializer.cc
index 6732808e85..ebb7938f64 100644
--- node/deps/v8/src/snapshot/read-only-serializer.cc
+++ node/deps/v8/src/snapshot/read-only-serializer.cc
@@ -14,6 +14,9 @@
 #include "src/objects/slots.h"
 #include "src/snapshot/read-only-serializer-deserializer.h"
 
+// for debugging readonly heap serialization
+// #define PKG_TRACE_READONLY_HEAP 1
+
 namespace v8 {
 namespace internal {
 
@@ -226,6 +229,10 @@ ro::EncodedTagged Encode(Isolate* isolate, Tagged<HeapObject> o) {
   uint32_t offset = static_cast<int>(chunk->Offset(o_address));
   DCHECK(IsAligned(offset, kTaggedSize));
 
+  #ifdef PKG_TRACE_READONLY_HEAP
+  PrintF("      [PKGTRACE] encode tagged page_index=%d offset=%u offidx=%u\n",
+    index, offset, offset / kTaggedSize);
+  #endif
   return ro::EncodedTagged(index, offset / kTaggedSize);
 }
 
@@ -325,6 +332,11 @@ class EncodeRelocationsVisitor final : public ObjectVisitor {
 
     // Encode:
     ro::EncodedTagged encoded = Encode(isolate_, o.GetHeapObject());
+
+    #ifndef V8_COMPRESS_POINTERS
+    memset(segment_->contents.get() + slot_offset, 0, kTaggedSize);
+    #endif
+
     memcpy(segment_->contents.get() + slot_offset, &encoded,
            ro::EncodedTagged::kSize);
 
@@ -357,8 +369,18 @@ void ReadOnlySegmentForSerialization::EncodeTaggedSlots(Isolate* isolate) {
   const Address segment_end = segment_start + segment_size;
   ReadOnlyPageObjectIterator it(page, segment_start,
                                 SkipFreeSpaceOrFiller::kNo);
+
+  #ifdef PKG_TRACE_READONLY_HEAP
+  uint32_t counter = 0;
+  #endif
+
   for (Tagged<HeapObject> o = it.Next(); !o.is_null(); o = it.Next()) {
     if (o.address() >= segment_end) break;
+    #ifdef PKG_TRACE_READONLY_HEAP
+    Tagged<Map> map = o->map(isolate);
+    PrintF("  [PKGTRACE] tag heapobj i=%d so=%zu s=%d t=%d\n",
+      counter++, o.address()-segment_start, o->Size(), map->instance_type());
+    #endif
     VisitObject(isolate, o, &v);
   }
 }
@@ -384,7 +406,14 @@ class ReadOnlyHeapImageSerializer {
     DCHECK_EQ(sink_->Position(), 0);
 
     ReadOnlySpace* ro_space = isolate_->read_only_heap()->read_only_space();
-
+    #ifdef PKG_TRACE_READONLY_HEAP
+    #ifdef V8_COMPRESS_POINTERS
+    bool pce = true;
+    #else
+    bool pce = false;
+    #endif
+    PrintF("[PKGTRACE] BEGIN SERIALIZE READONLY ro_space=%p pce=%d\n", ro_space, pce);
+    #endif
     // Allocate all pages first s.t. the deserializer can easily handle forward
     // references (e.g.: an object on page i points at an object on page i+1).
     for (const ReadOnlyPage* page : ro_space->pages()) {
@@ -399,6 +428,10 @@ class ReadOnlyHeapImageSerializer {
     EmitReadOnlyRootsTable();
     sink_->Put(Bytecode::kFinalizeReadOnlySpace, "space end");
     sink_->PutUint30(isolate_->next_unique_sfi_id(), "shared function info ID");
+
+    #ifdef PKG_TRACE_READONLY_HEAP
+    PrintF("[PKGTRACE] END SERIALIZE READONLY\n");
+    #endif
   }
 
   uint32_t IndexOf(const ReadOnlyPage* page) {
@@ -416,6 +449,13 @@ class ReadOnlyHeapImageSerializer {
     sink_->PutUint30(
         static_cast<uint32_t>(page->HighWaterMark() - page->area_start()),
         "area size in bytes");
+    #ifdef PKG_TRACE_READONLY_HEAP
+    PrintF("[PKGTRACE] emit allocate page area_ro_space_off=%zu area_start=%lx idx=%d size=%d \n",
+        ((uint8_t*)(page->area_start()))-((uint8_t*)(isolate_->read_only_heap()->read_only_space())),
+        page->area_start(),
+        IndexOf(page),
+        static_cast<uint32_t>(page->HighWaterMark() - page->area_start()));
+    #endif
     if (V8_STATIC_ROOTS_BOOL) {
       auto page_addr = page->ChunkAddress();
       sink_->PutUint32(V8HeapCompressionScheme::CompressAny(page_addr),
@@ -447,6 +487,9 @@ class ReadOnlyHeapImageSerializer {
 
   void SerializePage(const ReadOnlyPage* page) {
     Address pos = page->area_start();
+    #ifdef PKG_TRACE_READONLY_HEAP
+    PrintF("[PKGTRACE] serialize page addr=%lx\n", page->area_start());
+    #endif
     if (v8_flags.trace_serializer) {
       PrintF("[ro serializer] Serializing page %p -> %p\n",
              reinterpret_cast<char*>(page->area_start()),
@@ -479,6 +522,9 @@ class ReadOnlyHeapImageSerializer {
               isolate_, page, pos, segment_size, &pre_processor_);
           EmitSegment(&segment);
         }
+        #ifdef PKG_TRACE_READONLY_HEAP
+        PrintF("[PKGTRACE] last segment\n");
+        #endif
         return;
       }
 
@@ -511,6 +557,11 @@ class ReadOnlyHeapImageSerializer {
 
   void EmitSegment(const ReadOnlySegmentForSerialization* segment) {
     if (segment->segment_size == 0) return;
+    #ifdef PKG_TRACE_READONLY_HEAP
+    PrintF("  [PKGTRACE] segment segment_start=%lx page_index=%d offset=%zu size=%zu tagged_slots=%zu\n",
+        segment->segment_start, IndexOf(segment->page), segment->segment_offset,
+        segment->segment_size, segment->tagged_slots.size_in_bytes());
+    #endif
     if (v8_flags.trace_serializer) {
       PrintF("[ro serializer] * Serializing segment %p -> %p\n",
              reinterpret_cast<char*>(segment->segment_start),
@@ -525,11 +576,29 @@ class ReadOnlyHeapImageSerializer {
                      "segment byte size");
     sink_->PutRaw(segment->contents.get(),
                   static_cast<int>(segment->segment_size), "page");
+    #ifdef PKG_TRACE_READONLY_HEAP
+    PrintF("    [PKGTRACE] segment_contents: ");
+    const uint8_t* cdata = reinterpret_cast<const uint8_t*>(segment->contents.get());
+    for (size_t i = 0; i < segment->segment_size; i++) {
+        if (i%128==0) {PrintF("\n    [PKGTRACE]  ");}
+        PrintF("%02x", cdata[i]);
+    }
+    PrintF("\n");
+    #endif
     if (!V8_STATIC_ROOTS_BOOL) {
       sink_->Put(Bytecode::kRelocateSegment, "relocate segment");
       sink_->PutRaw(segment->tagged_slots.data(),
                     static_cast<int>(segment->tagged_slots.size_in_bytes()),
                     "tagged_slots");
+      #ifdef PKG_TRACE_READONLY_HEAP
+      PrintF("    [PKGTRACE] tagged_slots: ");
+      const uint8_t* tdata = segment->tagged_slots.data();
+      for (size_t i = 0; i < segment->tagged_slots.size_in_bytes(); i++) {
+        if (i%128==0) {PrintF("\n    [PKGTRACE]  ");}
+          PrintF("%02x", tdata[i]);
+      }
+      PrintF("\n");
+      #endif
     }
   }
 
@@ -537,11 +606,20 @@ class ReadOnlyHeapImageSerializer {
     sink_->Put(Bytecode::kReadOnlyRootsTable, "read only roots table");
     if (!V8_STATIC_ROOTS_BOOL) {
       ReadOnlyRoots roots(isolate_);
+      #ifdef PKG_TRACE_READONLY_HEAP
+      PrintF("[PKGTRACE] readonly roots %lu\n", ReadOnlyRoots::kEntriesCount);
+      #endif
       for (size_t i = 0; i < ReadOnlyRoots::kEntriesCount; i++) {
         RootIndex rudi = static_cast<RootIndex>(i);
         Tagged<HeapObject> rudolf = Cast<HeapObject>(roots.object_at(rudi));
         ro::EncodedTagged encoded = Encode(isolate_, rudolf);
         sink_->PutUint32(encoded.ToUint32(), "read only roots entry");
+        #ifdef PKG_TRACE_READONLY_HEAP
+        Tagged<Map> map = rudolf->map(isolate_);
+        InstanceType instance_type = map->instance_type();
+        PrintF("  [PKGTRACE] readonly root i=%zu e=%x s=%d t=%d\n",
+                i, encoded.ToUint32(), rudolf->Size(), instance_type);
+        #endif
       }
     }
   }
diff --git node/lib/child_process.js node/lib/child_process.js
index 824af65556..8393ee812f 100644
--- node/lib/child_process.js
+++ node/lib/child_process.js
@@ -171,7 +171,7 @@ function fork(modulePath, args = [], options) {
     throw new ERR_CHILD_PROCESS_IPC_REQUIRED('options.stdio');
   }
 
-  return spawn(options.execPath, args, options);
+  return module.exports.spawn(options.execPath, args, options);
 }
 
 function _forkChild(fd, serializationMode) {
diff --git node/lib/internal/bootstrap/pkg.js node/lib/internal/bootstrap/pkg.js
new file mode 100644
index 0000000000..a697294fdf
--- /dev/null
+++ node/lib/internal/bootstrap/pkg.js
@@ -0,0 +1,49 @@
+'use strict';
+
+const {
+  prepareWorkerThreadExecution,
+  prepareMainThreadExecution
+} = require('internal/process/pre_execution');
+
+if (internalBinding('worker').isMainThread) {
+  prepareMainThreadExecution(true);
+} else {
+  prepareWorkerThreadExecution();
+}
+
+(function () {
+  var __require__ = require;
+  var fs = __require__('fs');
+  var vm = __require__('vm');
+  function readPrelude (fd) {
+    var PAYLOAD_POSITION = '// PAYLOAD_POSITION //' | 0;
+    var PAYLOAD_SIZE = '// PAYLOAD_SIZE //' | 0;
+    var PRELUDE_POSITION = '// PRELUDE_POSITION //' | 0;
+    var PRELUDE_SIZE = '// PRELUDE_SIZE //' | 0;
+    if (!PRELUDE_POSITION) {
+      // no prelude - remove entrypoint from argv[1]
+      process.argv.splice(1, 1);
+      return { undoPatch: true };
+    }
+    var prelude = Buffer.alloc(PRELUDE_SIZE);
+    var read = fs.readSync(fd, prelude, 0, PRELUDE_SIZE, PRELUDE_POSITION);
+    if (read !== PRELUDE_SIZE) {
+      console.error('Pkg: Error reading from file.');
+      process.exit(1);
+    }
+    var s = new vm.Script(prelude, { filename: 'pkg/prelude/bootstrap.js' });
+    var fn = s.runInThisContext();
+    return fn(process, __require__,
+      console, fd, PAYLOAD_POSITION, PAYLOAD_SIZE);
+  }
+  (function () {
+    var fd = fs.openSync(process.execPath, 'r');
+    var result = readPrelude(fd);
+    if (result && result.undoPatch) {
+      var bindingFs = process.binding('fs');
+      fs.internalModuleStat = bindingFs.internalModuleStat;
+      fs.internalModuleReadJSON = bindingFs.internalModuleReadJSON;
+      fs.closeSync(fd);
+    }
+  }());
+}());
diff --git node/lib/internal/modules/cjs/loader.js node/lib/internal/modules/cjs/loader.js
index 65a35299eb..025eb1c92f 100644
--- node/lib/internal/modules/cjs/loader.js
+++ node/lib/internal/modules/cjs/loader.js
@@ -267,12 +267,15 @@ function stat(filename) {
   // Guard against internal bugs where a non-string filename is passed in by mistake.
   assert(typeof filename === 'string');
 
+  const origFilename = filename;
   filename = path.toNamespacedPath(filename);
   if (statCache !== null) {
     const result = statCache.get(filename);
     if (result !== undefined) { return result; }
   }
-  const result = internalFsBinding.internalModuleStat(filename);
+  const fs = require('fs');
+  const result = fs.existsSync(origFilename) ?
+    (fs.statSync(origFilename).isDirectory() ? 1 : 0) : -1;
   if (statCache !== null && result >= 0) {
     // Only set cache when `internalModuleStat(filename)` succeeds.
     statCache.set(filename, result);
diff --git node/lib/internal/modules/package_json_reader.js node/lib/internal/modules/package_json_reader.js
index 6c6bf0383b..25db3d9f43 100644
--- node/lib/internal/modules/package_json_reader.js
+++ node/lib/internal/modules/package_json_reader.js
@@ -120,17 +120,20 @@ const requiresJSONParse = (value) => (value !== undefined && (value[0] === '[' |
  * @returns {PackageConfig}
  */
 function read(jsonPath, { base, specifier, isESM } = kEmptyObject) {
-  // This function will be called by both CJS and ESM, so we need to make sure
-  // non-null attributes are converted to strings.
-  const parsed = modulesBinding.readPackageJSON(
-    jsonPath,
-    isESM,
-    base == null ? undefined : `${base}`,
-    specifier == null ? undefined : `${specifier}`,
-  );
-
-  const result = deserializePackageJSON(jsonPath, parsed);
-
+  const fs = require('fs');
+  let result;
+  if (fs.existsSync(jsonPath)) {
+    const json = JSONParse(fs.readFileSync(jsonPath, { encoding: "utf8" }).trim());
+    result = deserializePackageJSON(jsonPath, [
+      json['name'],
+      json['main'],
+      json['type'],
+      json['imports'],
+      json['exports'],
+    ]);
+  } else {
+    result = deserializePackageJSON(jsonPath, undefined);
+  }
   return {
     __proto__: null,
     ...result.data,
diff --git node/lib/internal/process/pre_execution.js node/lib/internal/process/pre_execution.js
index 16a80c2d4f..4f6232e8b8 100644
--- node/lib/internal/process/pre_execution.js
+++ node/lib/internal/process/pre_execution.js
@@ -42,7 +42,11 @@ const {
   runDeserializeCallbacks,
 } = require('internal/v8/startup_snapshot');
 
+let _alreadyPrepared = false;
+
 function prepareMainThreadExecution(expandArgv1 = false, initializeModules = true) {
+  if (_alreadyPrepared === true) return;
+  _alreadyPrepared = true;
   return prepareExecution({
     expandArgv1,
     initializeModules,
@@ -281,7 +285,8 @@ function patchProcessObject(expandArgv1) {
   let mainEntry;
   // If requested, update process.argv[1] to replace whatever the user provided with the resolved absolute file path of
   // the entry point.
-  if (expandArgv1 && process.argv[1] && process.argv[1][0] !== '-') {
+  if (expandArgv1 && process.argv[1] && process.argv[1][0] !== '-' &&
+    process.argv[1] !== 'PKG_DUMMY_ENTRYPOINT') {
     // Expand process.argv[1] into a full path.
     const path = require('path');
     try {
@@ -755,6 +760,7 @@ function loadPreloadModules() {
   // For user code, we preload modules if `-r` is passed
   const preloadModules = getOptionValue('--require');
   if (preloadModules && preloadModules.length > 0) {
+    assert(false, '--require is not supported');
     const {
       Module: {
         _preloadModules,
diff --git node/lib/vm.js node/lib/vm.js
index ae71080620..b05638de75 100644
--- node/lib/vm.js
+++ node/lib/vm.js
@@ -98,6 +98,7 @@ class Script extends ContextifyScript {
       produceCachedData = false,
       importModuleDynamically,
       [kParsingContext]: parsingContext,
+      sourceless = false,
     } = options;
 
     validateString(filename, 'options.filename');
@@ -121,7 +122,8 @@ class Script extends ContextifyScript {
             cachedData,
             produceCachedData,
             parsingContext,
-            hostDefinedOptionId);
+            hostDefinedOptionId,
+            sourceless);
     } catch (e) {
       throw e; /* node-do-not-add-exception-line */
     }
diff --git node/src/inspector_agent.cc node/src/inspector_agent.cc
index 5e1d9149dc..1426160ac0 100644
--- node/src/inspector_agent.cc
+++ node/src/inspector_agent.cc
@@ -858,11 +858,6 @@ bool Agent::Start(const std::string& path,
                               StartIoThreadAsyncCallback));
     uv_unref(reinterpret_cast<uv_handle_t*>(&start_io_thread_async));
     start_io_thread_async.data = this;
-    if (parent_env_->should_start_debug_signal_handler()) {
-      // Ignore failure, SIGUSR1 won't work, but that should not block node
-      // start.
-      StartDebugSignalHandler();
-    }
 
     parent_env_->AddCleanupHook([](void* data) {
       Environment* env = static_cast<Environment*>(data);
diff --git node/src/node.cc node/src/node.cc
index 4ba019ddca..b30d716a41 100644
--- node/src/node.cc
+++ node/src/node.cc
@@ -351,6 +351,8 @@ MaybeLocal<Value> StartExecution(Environment* env,
     return env->RunSnapshotDeserializeMain();
   }
 
+  StartExecution(env, "internal/bootstrap/pkg");
+
   if (env->worker_context() != nullptr) {
     return StartExecution(env, "internal/main/worker_thread");
   }
@@ -575,14 +577,6 @@ static void PlatformInit(ProcessInitializationFlags::Flags flags) {
   }
 
   if (!(flags & ProcessInitializationFlags::kNoDefaultSignalHandling)) {
-#if HAVE_INSPECTOR
-    sigset_t sigmask;
-    sigemptyset(&sigmask);
-    sigaddset(&sigmask, SIGUSR1);
-    const int err = pthread_sigmask(SIG_SETMASK, &sigmask, nullptr);
-    CHECK_EQ(err, 0);
-#endif  // HAVE_INSPECTOR
-
     ResetSignalHandlers();
   }
 
diff --git node/src/node_contextify.cc node/src/node_contextify.cc
index 14534ab896..dad27d634e 100644
--- node/src/node_contextify.cc
+++ node/src/node_contextify.cc
@@ -88,6 +88,7 @@ using v8::String;
 using v8::Symbol;
 using v8::UnboundScript;
 using v8::Value;
+using v8::V8;
 
 // The vm module executes code in a sandboxed environment with a different
 // global object than the rest of the code. This is achieved by applying
@@ -982,13 +983,13 @@ void ContextifyScript::New(const FunctionCallbackInfo<Value>& args) {
   Local<ArrayBufferView> cached_data_buf;
   bool produce_cached_data = false;
   Local<Context> parsing_context = context;
-
+  bool sourceless = false;
   Local<Symbol> id_symbol;
   if (argc > 2) {
     // new ContextifyScript(code, filename, lineOffset, columnOffset,
     //                      cachedData, produceCachedData, parsingContext,
-    //                      hostDefinedOptionId)
-    CHECK_EQ(argc, 8);
+    //                      hostDefinedOptionId, sourceless)
+    CHECK_GE(argc, 8);
     CHECK(args[2]->IsNumber());
     line_offset = args[2].As<Int32>()->Value();
     CHECK(args[3]->IsNumber());
@@ -1009,6 +1010,11 @@ void ContextifyScript::New(const FunctionCallbackInfo<Value>& args) {
     }
     CHECK(args[7]->IsSymbol());
     id_symbol = args[7].As<Symbol>();
+
+    if (argc > 8) {
+      CHECK(args[8]->IsBoolean());
+        sourceless = args[8]->IsTrue();
+    }
   }
 
   ContextifyScript* contextify_script = New(env, args.This());
@@ -1055,6 +1061,10 @@ void ContextifyScript::New(const FunctionCallbackInfo<Value>& args) {
   ShouldNotAbortOnUncaughtScope no_abort_scope(env);
   Context::Scope scope(parsing_context);
 
+  if (sourceless && produce_cached_data) {
+    V8::EnableCompilationForSourcelessUse();
+  }
+
   MaybeLocal<UnboundScript> maybe_v8_script =
       ScriptCompiler::CompileUnboundScript(isolate, &source, compile_options);
 
@@ -1069,6 +1079,12 @@ void ContextifyScript::New(const FunctionCallbackInfo<Value>& args) {
     return;
   }
 
+  if (sourceless && compile_options == ScriptCompiler::kConsumeCodeCache) {
+    if (!source.GetCachedData()->rejected) {
+      V8::FixSourcelessScript(env->isolate(), v8_script);
+    }
+  }
+
   contextify_script->set_unbound_script(v8_script);
 
   std::unique_ptr<ScriptCompiler::CachedData> new_cached_data;
@@ -1081,7 +1097,7 @@ void ContextifyScript::New(const FunctionCallbackInfo<Value>& args) {
   if (contextify_script->object()
           ->SetPrivate(context, env->host_defined_option_symbol(), id_symbol)
           .IsNothing()) {
-    return;
+return;
   }
   if (StoreCodeCacheResult(env,
                            self,
@@ -1092,6 +1108,9 @@ void ContextifyScript::New(const FunctionCallbackInfo<Value>& args) {
           .IsNothing()) {
     return;
   }
+  if (sourceless && produce_cached_data) {
+    V8::DisableCompilationForSourcelessUse();
+  }
   if (self->Set(env->context(),
                 env->source_url_string(),
                 v8_script->GetSourceURL())
diff --git node/src/node_main.cc node/src/node_main.cc
index 3295121b87..bfe838b8c1 100644
--- node/src/node_main.cc
+++ node/src/node_main.cc
@@ -22,6 +22,8 @@
 #include "node.h"
 #include <cstdio>
 
+int reorder(int argc, char** argv);
+
 #ifdef _WIN32
 #include <windows.h>
 #include <VersionHelpers.h>
@@ -88,12 +90,95 @@ int wmain(int argc, wchar_t* wargv[]) {
   }
   argv[argc] = nullptr;
   // Now that conversion is done, we can finally start.
-  return node::Start(argc, argv);
+  return reorder(argc, argv);
 }
 #else
 // UNIX
 
 int main(int argc, char* argv[]) {
+  return reorder(argc, argv);
+}
+#endif
+
+#include <string.h>
+
+int strlen2 (char* s) {
+  int len = 0;
+  while (*s) {
+    len += 1;
+    s += 1;
+  }
+  return len;
+}
+
+bool should_set_dummy() {
+#ifdef _WIN32
+  #define MAX_ENV_LENGTH 32767
+  wchar_t execpath_env[MAX_ENV_LENGTH];
+  DWORD result = GetEnvironmentVariableW(L"PKG_EXECPATH", execpath_env, MAX_ENV_LENGTH);
+  if (result == 0 && GetLastError() != ERROR_SUCCESS) return true;
+  return wcscmp(execpath_env, L"PKG_INVOKE_NODEJS") != 0;
+#else
+  const char* execpath_env = getenv("PKG_EXECPATH");
+  if (!execpath_env) return true;
+  return strcmp(execpath_env, "PKG_INVOKE_NODEJS") != 0;
+#endif
+}
+
+// for uv_setup_args
+int adjacent(int argc, char** argv) {
+  size_t size = 0;
+  for (int i = 0; i < argc; i++) {
+    size += strlen(argv[i]) + 1;
+  }
+  char* args = new char[size];
+  size_t pos = 0;
+  for (int i = 0; i < argc; i++) {
+    memcpy(&args[pos], argv[i], strlen(argv[i]) + 1);
+    argv[i] = &args[pos];
+    pos += strlen(argv[i]) + 1;
+  }
   return node::Start(argc, argv);
 }
+
+volatile char* BAKERY = (volatile char*) "\0// BAKERY // BAKERY " \
+  "// BAKERY // BAKERY // BAKERY // BAKERY // BAKERY // BAKERY " \
+  "// BAKERY // BAKERY // BAKERY // BAKERY // BAKERY // BAKERY " \
+  "// BAKERY // BAKERY // BAKERY // BAKERY // BAKERY // BAKERY ";
+
+#ifdef __clang__
+__attribute__((optnone))
+#elif defined(__GNUC__)
+__attribute__((optimize(0)))
 #endif
+
+int load_baked(char** nargv) {
+  int c = 1;
+
+  char* bakery = (char*) BAKERY;
+  while (true) {
+    size_t width = strlen2(bakery);
+    if (width == 0) break;
+    nargv[c++] = bakery;
+    bakery += width + 1;
+  }
+
+  return c;
+}
+
+int reorder(int argc, char** argv) {
+  char** nargv = new char*[argc + 64];
+
+  nargv[0] = argv[0];
+  int c = load_baked(nargv);
+
+  if (should_set_dummy()) {
+    nargv[c++] = (char*) "PKG_DUMMY_ENTRYPOINT";
+  }
+
+  for (int i = 1; i < argc; i++) {
+    nargv[c++] = argv[i];
+  }
+
+  return adjacent(c, nargv);
+}
diff --git node/src/node_options.cc node/src/node_options.cc
index 99c5a7dbe4..b0ae409120 100644
--- node/src/node_options.cc
+++ node/src/node_options.cc
@@ -466,6 +466,7 @@ void Parse(
 // TODO(addaleax): Make that unnecessary.
 
 DebugOptionsParser::DebugOptionsParser() {
+  return;
   AddOption("--inspect-port",
             "set host:port for inspector",
             &DebugOptions::host_port,
diff --git node/tools/icu/icu-generic.gyp node/tools/icu/icu-generic.gyp
index f49b4ddba7..eb1e4c0f9b 100644
--- node/tools/icu/icu-generic.gyp
+++ node/tools/icu/icu-generic.gyp
@@ -52,7 +52,7 @@
         'conditions': [
           [ 'os_posix == 1 and OS != "mac" and OS != "ios"', {
             'cflags': [ '-Wno-deprecated-declarations', '-Wno-strict-aliasing' ],
-            'cflags_cc': [ '-frtti' ],
+            'cflags_cc': [ '-frtti', '-fno-lto' ],
             'cflags_cc!': [ '-fno-rtti' ],
           }],
           [ 'OS == "mac" or OS == "ios"', {