Local<Object> object,

Local<Module> module,

Local<String> url) :

BaseObject(env, object),

id_(env->get_next_module_id()) {

module_.Reset(env->isolate(), module);

url_.Reset(env->isolate(), url);

env->id_to_module_map.emplace(id_, this);

CHECK(args.IsConstructCall());

CHECK_GE(args.Length(), 3);

Environment* env = Environment::GetCurrent(args);

Isolate* isolate = env->isolate();

Local<Object> that = args.This();

CHECK(args[0]->IsString());

Local<String> url = args[0].As<String>();

Local<Context> context;

if (args[1]->IsUndefined()) {

context = that->CreationContext();

} else {

CHECK(args[1]->IsObject());

ContextifyContext* sandbox =

ContextifyContext::ContextFromContextifiedSandbox(

env, args[1].As<Object>());

CHECK_NOT_NULL(sandbox);

context = sandbox->context();

}

Local<Integer> line_offset;

Local<Integer> column_offset;

bool synthetic = args[2]->IsArray();

if (synthetic) {

// new ModuleWrap(url, context, exportNames, syntheticExecutionFunction)

CHECK(args[3]->IsFunction());

} else {

// new ModuleWrap(url, context, source, lineOffset, columOffset, cachedData)

CHECK(args[2]->IsString());

CHECK(args[3]->IsNumber());

line_offset = args[3].As<Integer>();

CHECK(args[4]->IsNumber());

column_offset = args[4].As<Integer>();

}

Local<PrimitiveArray> host_defined_options =

PrimitiveArray::New(isolate, HostDefinedOptions::kLength);

host_defined_options->Set(isolate, HostDefinedOptions::kType,

Number::New(isolate, ScriptType::kModule));

ShouldNotAbortOnUncaughtScope no_abort_scope(env);

TryCatchScope try_catch(env);

Local<Module> module;

{

Context::Scope context_scope(context);

if (synthetic) {

CHECK(args[2]->IsArray());

Local<Array> export_names_arr = args[2].As<Array>();

uint32_t len = export_names_arr->Length();

std::vector<Local<String>> export_names(len);

for (uint32_t i = 0; i < len; i++) {

Local<Value> export_name_val =

export_names_arr->Get(context, i).ToLocalChecked();

CHECK(export_name_val->IsString());

export_names[i] = export_name_val.As<String>();

}

module = Module::CreateSyntheticModule(isolate, url, export_names,

SyntheticModuleEvaluationStepsCallback);

} else {

ScriptCompiler::CachedData* cached_data = nullptr;

if (!args[5]->IsUndefined()) {

CHECK(args[5]->IsArrayBufferView());

Local<ArrayBufferView> cached_data_buf = args[5].As<ArrayBufferView>();

uint8_t* data = static_cast<uint8_t*>(

cached_data_buf->Buffer()->GetBackingStore()->Data());

cached_data =

new ScriptCompiler::CachedData(data + cached_data_buf->ByteOffset(),

cached_data_buf->ByteLength());

}

Local<String> source_text = args[2].As<String>();

ScriptOrigin origin(url,

line_offset, // line offset

column_offset, // column offset

True(isolate), // is cross origin

Local<Integer>(), // script id

Local<Value>(), // source map URL

False(isolate), // is opaque (?)

False(isolate), // is WASM

True(isolate), // is ES Module

host_defined_options);

ScriptCompiler::Source source(source_text, origin, cached_data);

ScriptCompiler::CompileOptions options;

if (source.GetCachedData() == nullptr) {

options = ScriptCompiler::kNoCompileOptions;

} else {

options = ScriptCompiler::kConsumeCodeCache;

}

if (!ScriptCompiler::CompileModule(isolate, &source, options)

.ToLocal(&module)) {

if (try_catch.HasCaught() && !try_catch.HasTerminated()) {

CHECK(!try_catch.Message().IsEmpty());

CHECK(!try_catch.Exception().IsEmpty());

AppendExceptionLine(env, try_catch.Exception(), try_catch.Message(),

ErrorHandlingMode::MODULE_ERROR);

try_catch.ReThrow();

}

return;

}

if (options == ScriptCompiler::kConsumeCodeCache &&

source.GetCachedData()->rejected) {

THROW_ERR_VM_MODULE_CACHED_DATA_REJECTED(

env, "cachedData buffer was rejected");

try_catch.ReThrow();

return;

}

}

}

if (!that->Set(context, env->url_string(), url).FromMaybe(false)) {

return;

}

ModuleWrap* obj = new ModuleWrap(env, that, module, url);

if (synthetic) {

obj->synthetic_ = true;

obj->synthetic_evaluation_steps_.Reset(

env->isolate(), args[3].As<Function>());

}

obj->context_.Reset(isolate, context);

env->hash_to_module_map.emplace(module->GetIdentityHash(), obj);

host_defined_options->Set(isolate, HostDefinedOptions::kID,

Number::New(isolate, obj->id()));

that->SetIntegrityLevel(context, IntegrityLevel::kFrozen);

args.GetReturnValue().Set(that);

Environment* env = Environment::GetCurrent(args);

Isolate* isolate = args.GetIsolate();

CHECK_EQ(args.Length(), 1);

CHECK(args[0]->IsFunction());

Local<Object> that = args.This();

ModuleWrap* obj;

ASSIGN_OR_RETURN_UNWRAP(&obj, that);

if (obj->linked_)

return;

obj->linked_ = true;

Local<Function> resolver_arg = args[0].As<Function>();

Local<Context> mod_context = obj->context_.Get(isolate);

Local<Module> module = obj->module_.Get(isolate);

const int module_requests_length = module->GetModuleRequestsLength();

MaybeStackBuffer<Local<Value>, 16> promises(module_requests_length);

// call the dependency resolve callbacks

for (int i = 0; i < module_requests_length; i++) {

Local<String> specifier = module->GetModuleRequest(i);

Utf8Value specifier_utf8(env->isolate(), specifier);

std::string specifier_std(*specifier_utf8, specifier_utf8.length());

Local<Value> argv[] = {

specifier

};

MaybeLocal<Value> maybe_resolve_return_value =

resolver_arg->Call(mod_context, that, 1, argv);

if (maybe_resolve_return_value.IsEmpty()) {

return;

}

Local<Value> resolve_return_value =

maybe_resolve_return_value.ToLocalChecked();

if (!resolve_return_value->IsPromise()) {

env->ThrowError("linking error, expected resolver to return a promise");

}

Local<Promise> resolve_promise = resolve_return_value.As<Promise>();

obj->resolve_cache_[specifier_std].Reset(env->isolate(), resolve_promise);

promises[i] = resolve_promise;

}

args.GetReturnValue().Set(

Array::New(isolate, promises.out(), promises.length()));

Environment* env = Environment::GetCurrent(args);

Isolate* isolate = args.GetIsolate();

ModuleWrap* obj;

ASSIGN_OR_RETURN_UNWRAP(&obj, args.This());

Local<Context> context = obj->context_.Get(isolate);

Local<Module> module = obj->module_.Get(isolate);

TryCatchScope try_catch(env);

USE(module->InstantiateModule(context, ResolveCallback));

// clear resolve cache on instantiate

obj->resolve_cache_.clear();

if (try_catch.HasCaught() && !try_catch.HasTerminated()) {

CHECK(!try_catch.Message().IsEmpty());

CHECK(!try_catch.Exception().IsEmpty());

AppendExceptionLine(env, try_catch.Exception(), try_catch.Message(),

ErrorHandlingMode::MODULE_ERROR);

try_catch.ReThrow();

return;

}

Environment* env = Environment::GetCurrent(args);

Isolate* isolate = env->isolate();

ModuleWrap* obj;

ASSIGN_OR_RETURN_UNWRAP(&obj, args.This());

Local<Context> context = obj->context_.Get(isolate);

Local<Module> module = obj->module_.Get(isolate);

// module.evaluate(timeout, breakOnSigint)

CHECK_EQ(args.Length(), 2);

CHECK(args[0]->IsNumber());

int64_t timeout = args[0]->IntegerValue(env->context()).FromJust();

CHECK(args[1]->IsBoolean());

bool break_on_sigint = args[1]->IsTrue();

ShouldNotAbortOnUncaughtScope no_abort_scope(env);

TryCatchScope try_catch(env);

bool timed_out = false;

bool received_signal = false;

MaybeLocal<Value> result;

if (break_on_sigint && timeout != -1) {

Watchdog wd(isolate, timeout, &timed_out);

SigintWatchdog swd(isolate, &received_signal);

result = module->Evaluate(context);

} else if (break_on_sigint) {

SigintWatchdog swd(isolate, &received_signal);

result = module->Evaluate(context);

} else if (timeout != -1) {

Watchdog wd(isolate, timeout, &timed_out);

result = module->Evaluate(context);

} else {

result = module->Evaluate(context);

}

if (result.IsEmpty()) {

CHECK(try_catch.HasCaught());

}

// Convert the termination exception into a regular exception.

if (timed_out || received_signal) {

if (!env->is_main_thread() && env->is_stopping())

return;

env->isolate()->CancelTerminateExecution();

// It is possible that execution was terminated by another timeout in

// which this timeout is nested, so check whether one of the watchdogs

// from this invocation is responsible for termination.

if (timed_out) {

THROW_ERR_SCRIPT_EXECUTION_TIMEOUT(env, timeout);

} else if (received_signal) {

THROW_ERR_SCRIPT_EXECUTION_INTERRUPTED(env);

}

}

if (try_catch.HasCaught()) {

if (!try_catch.HasTerminated())

try_catch.ReThrow();

return;

}

args.GetReturnValue().Set(result.ToLocalChecked());

Environment* env = Environment::GetCurrent(args);

Isolate* isolate = args.GetIsolate();

ModuleWrap* obj;

ASSIGN_OR_RETURN_UNWRAP(&obj, args.This());

Local<Module> module = obj->module_.Get(isolate);

switch (module->GetStatus()) {

default:

return env->ThrowError(

"cannot get namespace, Module has not been instantiated");

case v8::Module::Status::kInstantiated:

case v8::Module::Status::kEvaluating:

case v8::Module::Status::kEvaluated:

break;

}

Local<Value> result = module->GetModuleNamespace();

args.GetReturnValue().Set(result);

Isolate* isolate = args.GetIsolate();

ModuleWrap* obj;

ASSIGN_OR_RETURN_UNWRAP(&obj, args.This());

Local<Module> module = obj->module_.Get(isolate);

args.GetReturnValue().Set(module->GetStatus());

const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

ModuleWrap* obj;

ASSIGN_OR_RETURN_UNWRAP(&obj, args.This());

Local<Module> module = obj->module_.Get(env->isolate());

int count = module->GetModuleRequestsLength();

MaybeStackBuffer<Local<Value>, 16> specifiers(count);

for (int i = 0; i < count; i++)

specifiers[i] = module->GetModuleRequest(i);

args.GetReturnValue().Set(

Array::New(env->isolate(), specifiers.out(), count));

Isolate* isolate = args.GetIsolate();

ModuleWrap* obj;

ASSIGN_OR_RETURN_UNWRAP(&obj, args.This());

Local<Module> module = obj->module_.Get(isolate);

args.GetReturnValue().Set(module->GetException());

Local<String> specifier,

Local<Module> referrer) {

Environment* env = Environment::GetCurrent(context);

CHECK_NOT_NULL(env); // TODO(addaleax): Handle nullptr here.

Isolate* isolate = env->isolate();

ModuleWrap* dependent = GetFromModule(env, referrer);

if (dependent == nullptr) {

env->ThrowError("linking error, null dep");

return MaybeLocal<Module>();

}

Utf8Value specifier_utf8(isolate, specifier);

std::string specifier_std(*specifier_utf8, specifier_utf8.length());

if (dependent->resolve_cache_.count(specifier_std) != 1) {

env->ThrowError("linking error, not in local cache");

return MaybeLocal<Module>();

}

Local<Promise> resolve_promise =

dependent->resolve_cache_[specifier_std].Get(isolate);

if (resolve_promise->State() != Promise::kFulfilled) {

env->ThrowError("linking error, dependency promises must be resolved on "

"instantiate");

return MaybeLocal<Module>();

}

Local<Object> module_object = resolve_promise->Result().As<Object>();

if (module_object.IsEmpty() || !module_object->IsObject()) {

env->ThrowError("linking error, expected a valid module object from "

"resolver");

return MaybeLocal<Module>();

}

ModuleWrap* module;

ASSIGN_OR_RETURN_UNWRAP(&module, module_object, MaybeLocal<Module>());

return module->module_.Get(isolate);

const std::string& specifier) {

size_t len = specifier.length();

if (len == 0)

return false;

if (specifier[0] == '/') {

return true;

} else if (specifier[0] == '.') {

if (len == 1 || specifier[1] == '/')

return true;

if (specifier[1] == '.') {

if (len == 2 || specifier[2] == '/')

return true;

}

}

return false;

std::string contents;

uv_fs_t req;

char buffer_memory[4096];

uv_buf_t buf = uv_buf_init(buffer_memory, sizeof(buffer_memory));

do {

const int r = uv_fs_read(nullptr,

&req,

file,

&buf,

1,

contents.length(), // offset

nullptr);

uv_fs_req_cleanup(&req);

if (r <= 0)

break;

contents.append(buf.base, r);

} while (true);

return contents;

FILE,

DIRECTORY,

NONE

uv_fs_t fs_req;

#ifdef _WIN32

std::string pth = "\\\\.\\" + path;

uv_file fd = uv_fs_open(nullptr, &fs_req, pth.c_str(), O_RDONLY, 0, nullptr);

#else

uv_file fd = uv_fs_open(nullptr, &fs_req, path.c_str(), O_RDONLY, 0, nullptr);

#endif

uv_fs_req_cleanup(&fs_req);

if (fd < 0) return Nothing<uv_file>();

return Just(fd);

uv_fs_t fs_req;

CHECK_EQ(0, uv_fs_close(nullptr, &fs_req, fd, nullptr));

uv_fs_req_cleanup(&fs_req);

uv_fs_t fs_req;

int rc = uv_fs_fstat(nullptr, &fs_req, fd, nullptr);

if (rc == 0) {

uint64_t is_directory = fs_req.statbuf.st_mode & S_IFDIR;

uv_fs_req_cleanup(&fs_req);

return is_directory ? DIRECTORY : FILE;

}

uv_fs_req_cleanup(&fs_req);

return NONE;

Maybe<uv_file> fd = OpenDescriptor(path);

if (fd.IsNothing()) return NONE;

DescriptorType type = CheckDescriptorAtFile(fd.FromJust());

CloseDescriptor(fd.FromJust());

return type;

Maybe<uv_file> fd = OpenDescriptor(path);

if (fd.IsNothing()) return Nothing<std::string>();

DescriptorType type = CheckDescriptorAtFile(fd.FromJust());

if (type != FILE) return Nothing<std::string>();

std::string source = ReadFile(fd.FromJust());

CloseDescriptor(fd.FromJust());

return Just(source);

const std::string& path,

const URL& base) {

auto existing = env->package_json_cache.find(path);

if (existing != env->package_json_cache.end()) {

const PackageConfig* pcfg = &existing->second;

if (pcfg->is_valid == IsValid::No) {

std::string msg = "Invalid JSON in " + path +

" imported from " + base.ToFilePath();

node::THROW_ERR_INVALID_PACKAGE_CONFIG(env, msg.c_str());

return Nothing<const PackageConfig*>();

}

return Just(pcfg);

}

Maybe<std::string> source = ReadIfFile(path);

if (source.IsNothing()) {

auto entry = env->package_json_cache.emplace(path,

PackageConfig { Exists::No, IsValid::Yes, HasMain::No, "",

HasName::No, "",

PackageType::None, Global<Value>() });

return Just(&entry.first->second);

}

std::string pkg_src = source.FromJust();

Isolate* isolate = env->isolate();

HandleScope handle_scope(isolate);

Local<Object> pkg_json;

{

Local<Value> src;

Local<Value> pkg_json_v;

Local<Context> context = env->context();

if (!ToV8Value(context, pkg_src).ToLocal(&src) ||

!v8::JSON::Parse(context, src.As<String>()).ToLocal(&pkg_json_v) ||

!pkg_json_v->ToObject(context).ToLocal(&pkg_json)) {

env->package_json_cache.emplace(path,

PackageConfig { Exists::Yes, IsValid::No, HasMain::No, "",

HasName::No, "",

PackageType::None, Global<Value>() });

std::string msg = "Invalid JSON in " + path +

" imported from " + base.ToFilePath();

node::THROW_ERR_INVALID_PACKAGE_CONFIG(env, msg.c_str());

return Nothing<const PackageConfig*>();

}

}

Local<Value> pkg_main;

HasMain has_main = HasMain::No;

std::string main_std;

if (pkg_json->Get(env->context(), env->main_string()).ToLocal(&pkg_main)) {

if (pkg_main->IsString()) {

has_main = HasMain::Yes;

}

Utf8Value main_utf8(isolate, pkg_main);

main_std.assign(std::string(*main_utf8, main_utf8.length()));

}

Local<Value> pkg_name;

HasName has_name = HasName::No;

std::string name_std;

if (pkg_json->Get(env->context(), env->name_string()).ToLocal(&pkg_name)) {

if (pkg_name->IsString()) {

has_name = HasName::Yes;

Utf8Value name_utf8(isolate, pkg_name);

name_std.assign(std::string(*name_utf8, name_utf8.length()));

}

}

PackageType pkg_type = PackageType::None;

Local<Value> type_v;

if (pkg_json->Get(env->context(), env->type_string()).ToLocal(&type_v)) {

if (type_v->StrictEquals(env->module_string())) {

pkg_type = PackageType::Module;

} else if (type_v->StrictEquals(env->commonjs_string())) {

pkg_type = PackageType::CommonJS;

}

// ignore unknown types for forwards compatibility

}

Local<Value> exports_v;

if (pkg_json->Get(env->context(),

env->exports_string()).ToLocal(&exports_v) &&

!exports_v->IsNullOrUndefined()) {

Global<Value> exports;

exports.Reset(env->isolate(), exports_v);

auto entry = env->package_json_cache.emplace(path,

PackageConfig { Exists::Yes, IsValid::Yes, has_main, main_std,

has_name, name_std,

pkg_type, std::move(exports) });

return Just(&entry.first->second);

}

auto entry = env->package_json_cache.emplace(path,

PackageConfig { Exists::Yes, IsValid::Yes, has_main, main_std,

has_name, name_std,

pkg_type, Global<Value>() });

return Just(&entry.first->second);

const URL& resolved,

const URL& base) {

URL pjson_url("./package.json", &resolved);

while (true) {

std::string pjson_url_path = pjson_url.path();

if (pjson_url_path.length() > 25 &&

pjson_url_path.substr(pjson_url_path.length() - 25, 25) ==

"node_modules/package.json") {

break;

}

Maybe<const PackageConfig*> pkg_cfg =

GetPackageConfig(env, pjson_url.ToFilePath(), base);

if (pkg_cfg.IsNothing()) return pkg_cfg;

if (pkg_cfg.FromJust()->exists == Exists::Yes) return pkg_cfg;

URL last_pjson_url = pjson_url;

pjson_url = URL("../package.json", pjson_url);

// Terminates at root where ../package.json equals ../../package.json

// (can't just check "/package.json" for Windows support).

if (pjson_url.path() == last_pjson_url.path()) break;

}

auto entry = env->package_json_cache.emplace(pjson_url.ToFilePath(),

PackageConfig { Exists::No, IsValid::Yes, HasMain::No, "",

HasName::No, "",

PackageType::None, Global<Value>() });

const PackageConfig* pcfg = &entry.first->second;

return Just(pcfg);

const PackageConfig& pcfg) {

URL guess;

if (pcfg.has_main == HasMain::Yes) {

// Note: fs check redundances will be handled by Descriptor cache here.

if (FileExists(guess = URL("./" + pcfg.main, pjson_url))) {

return Just(guess);

}

if (FileExists(guess = URL("./" + pcfg.main + ".js", pjson_url))) {

return Just(guess);

}

if (FileExists(guess = URL("./" + pcfg.main + ".json", pjson_url))) {

return Just(guess);

}

if (FileExists(guess = URL("./" + pcfg.main + ".node", pjson_url))) {

return Just(guess);

}

if (FileExists(guess = URL("./" + pcfg.main + "/index.js", pjson_url))) {

return Just(guess);

}

// Such stat.

if (FileExists(guess = URL("./" + pcfg.main + "/index.json", pjson_url))) {

return Just(guess);

}

if (FileExists(guess = URL("./" + pcfg.main + "/index.node", pjson_url))) {

return Just(guess);

}

// Fallthrough.

}

if (FileExists(guess = URL("./index.js", pjson_url))) {

return Just(guess);

}

// So fs.

if (FileExists(guess = URL("./index.json", pjson_url))) {

return Just(guess);

}

if (FileExists(guess = URL("./index.node", pjson_url))) {

return Just(guess);

}

// Not found.

return Nothing<URL>();

if (options == TRY_EXACT_NAME) {

if (FileExists(search)) {

return Just(search);

}

}

for (const char* extension : EXTENSIONS) {

URL guess(search.path() + extension, &search);

if (FileExists(guess)) {

return Just(guess);

}

}

return Nothing<URL>();

const URL& resolved,

const URL& base) {

if (env->options()->experimental_specifier_resolution == "node") {

Maybe<URL> file = ResolveExtensions<TRY_EXACT_NAME>(resolved);

if (!file.IsNothing()) {

return file;

}

if (resolved.path().back() != '/') {

file = ResolveIndex(URL(resolved.path() + "/", &base));

} else {

file = ResolveIndex(resolved);

}

if (!file.IsNothing()) {

return file;

}

std::string msg = "Cannot find module " + resolved.path() +

" imported from " + base.ToFilePath();

node::THROW_ERR_MODULE_NOT_FOUND(env, msg.c_str());

return Nothing<URL>();

}

if (resolved.path().back() == '/') {

return Just(resolved);

}

const std::string& path = resolved.ToFilePath();

if (CheckDescriptorAtPath(path) != FILE) {

std::string msg = "Cannot find module " +

(path.length() != 0 ? path : resolved.path()) +

" imported from " + base.ToFilePath();

node::THROW_ERR_MODULE_NOT_FOUND(env, msg.c_str());

return Nothing<URL>();

}

return Just(resolved);

const std::string& subpath,

const URL& pjson_url,

const URL& base) {

const std::string msg = "Package subpath '" + subpath + "' is not defined" +

" by \"exports\" in " + pjson_url.ToFilePath() + " imported from " +

base.ToFilePath();

node::THROW_ERR_PACKAGE_PATH_NOT_EXPORTED(env, msg.c_str());

const std::string& subpath,

const URL& pjson_url,

const URL& base) {

const std::string msg = "Package subpath '" + subpath + "' is not a valid " +

"module request for the \"exports\" resolution of " +

pjson_url.ToFilePath() + " imported from " + base.ToFilePath();

node::THROW_ERR_INVALID_MODULE_SPECIFIER(env, msg.c_str());

const std::string& subpath,

const std::string& target,

const URL& pjson_url,

const URL& base) {

if (subpath.length()) {

const std::string msg = "Invalid \"exports\" target \"" + target +

"\" defined for '" + subpath + "' in the package config " +

pjson_url.ToFilePath() + " imported from " + base.ToFilePath();

node::THROW_ERR_INVALID_PACKAGE_TARGET(env, msg.c_str());

} else {

const std::string msg = "Invalid \"exports\" main target " + target +

" defined in the package config " + pjson_url.ToFilePath() +

" imported from " + base.ToFilePath();

node::THROW_ERR_INVALID_PACKAGE_TARGET(env, msg.c_str());

}

const std::string& subpath,

Local<Value> target,

const URL& pjson_url,

const URL& base) {

Local<String> target_string;

if (target->IsObject()) {

if (!v8::JSON::Stringify(env->context(), target.As<Object>(),

v8::String::Empty(env->isolate())).ToLocal(&target_string))

return;

} else {

if (!target->ToString(env->context()).ToLocal(&target_string))

return;

}

Utf8Value target_utf8(env->isolate(), target_string);

std::string target_str(*target_utf8, target_utf8.length());

if (target->IsArray()) {

target_str = '[' + target_str + ']';

}

ThrowExportsInvalid(env, subpath, target_str, pjson_url, base);

const std::string& target,

const std::string& subpath,

const std::string& match,

const URL& pjson_url,

const URL& base) {

if (target.substr(0, 2) != "./") {

ThrowExportsInvalid(env, match, target, pjson_url, base);

return Nothing<URL>();

}

if (subpath.length() > 0 && target.back() != '/') {

ThrowExportsInvalid(env, match, target, pjson_url, base);

return Nothing<URL>();

}

URL resolved(target, pjson_url);

std::string resolved_path = resolved.path();

std::string pkg_path = URL(".", pjson_url).path();

if (resolved_path.find(pkg_path) != 0 ||

resolved_path.find("/node_modules/", pkg_path.length() - 1) !=

std::string::npos) {

ThrowExportsInvalid(env, match, target, pjson_url, base);

return Nothing<URL>();

}

if (subpath.length() == 0) return Just(resolved);

URL subpath_resolved(subpath, resolved);

std::string subpath_resolved_path = subpath_resolved.path();

if (subpath_resolved_path.find(resolved_path) != 0 ||

subpath_resolved_path.find("/node_modules/", pkg_path.length() - 1)

!= std::string::npos) {

ThrowSubpathInvalid(env, match + subpath, pjson_url, base);

return Nothing<URL>();

}

return Just(subpath_resolved);

Local<Context> context = env->context();

Local<String> p_str = p->ToString(context).ToLocalChecked();

double n_dbl = static_cast<double>(p_str->NumberValue(context).FromJust());

Local<Number> n = Number::New(env->isolate(), n_dbl);

Local<String> cmp_str = n->ToString(context).ToLocalChecked();

if (!p_str->Equals(context, cmp_str).FromJust()) {

return false;

}

if (n_dbl == 0 && std::signbit(n_dbl) == false) {

return true;

}

Local<Integer> cmp_integer;

if (!n->ToInteger(context).ToLocal(&cmp_integer)) {

return false;

}

return n_dbl > 0 && n_dbl < (1LL << 32) - 1;

const URL& pjson_url,

Local<Value> target,

const std::string& subpath,

const std::string& pkg_subpath,

const URL& base) {

Isolate* isolate = env->isolate();

Local<Context> context = env->context();

if (target->IsString()) {

Utf8Value target_utf8(isolate, target.As<String>());

std::string target_str(*target_utf8, target_utf8.length());

Maybe<URL> resolved = ResolveExportsTargetString(env, target_str, subpath,

pkg_subpath, pjson_url, base);

if (resolved.IsNothing()) {

return Nothing<URL>();

}

return FinalizeResolution(env, resolved.FromJust(), base);

} else if (target->IsArray()) {

Local<Array> target_arr = target.As<Array>();

const uint32_t length = target_arr->Length();

if (length == 0) {

ThrowExportsInvalid(env, pkg_subpath, target, pjson_url, base);

return Nothing<URL>();

}

for (uint32_t i = 0; i < length; i++) {

auto target_item = target_arr->Get(context, i).ToLocalChecked();

{

TryCatchScope try_catch(env);