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GeezerVison is showing github.com — ios/NativeScript/runtime/ModuleInternal.mm at main · NativeScript/ios Expand file tree/ Copy pathModuleInternal.mmMore file actions 2033 lines (1789 loc) · 84.3 KB / Copy pathModuleInternal.mmFile metadata and controls2033 lines (1789 loc) · 84.3 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 #include "ModuleInternal.h" #import <Foundation/Foundation.h> #include <sys/stat.h> #include <time.h> #include <unistd.h> #include <cmath> #include <cstring> #include <string> #include "BuiltinLoader.h" #include "Caches.h" #include "Helpers.h" #include "HttpLoader.h" #include "ModuleInternalCallbacks.h" // for ResolveModuleCallback #include "NativeScriptException.h" #include "NsBuiltinModules.h" #include "Runtime.h" #include "RuntimeConfig.h" #include "napi/NapiModules.h" using namespace v8; namespace tns { // Helper function to check if a file path is an ES module (.mjs) but not a source map (.mjs.map) bool IsESModule(const std::string& path) { return path.size() >= 4 && path.compare(path.size() - 4, 4, ".mjs") == 0 && !(path.size() >= 8 && path.compare(path.size() - 8, 8, ".mjs.map") == 0); } // A package-style specifier: neither a path nor a scheme, so it may be claimed // by a registry rather than resolved on disk. static bool IsBareSpecifier(const std::string& specifier) { if (specifier.empty() || specifier[0] == '.' || specifier[0] == '/' || specifier[0] == '~') { return false; } return specifier.find(':') == std::string::npos; } static std::string NormalizePath(const std::string& path); // How an entry module's graph settles. For local modules the bound is a yield, // not a timeout: only nestable V8 tasks can run while these JS frames are on // the stack, so a TLA parked on a non-nestable foreground task can never settle // in-pump — give it one short window, then return and let the real event loop // finish it after the turn (the Node shape; EventLoopTests pins this). HTTP // entries must settle in-pump — the dev client needs the rejection reason // synchronously — so they get the full deadline and the runloop slices their // transport needs. static ModuleEvaluationOptions BootEntryEvaluationOptions(bool isHttpModule) { ModuleEvaluationOptions options; options.policy = ModuleEvaluationPolicy::kSyncPumping; options.deadlineSeconds = isHttpModule ? kModuleEvaluateDeadlineSeconds : 1.0; options.timeoutBehavior = isHttpModule ? ModuleEvaluationOptions::TimeoutBehavior::kThrow : ModuleEvaluationOptions::TimeoutBehavior::kReturnPending; options.pumpRunLoop = isHttpModule; return options; } // How a graph reached through require() settles. A pumping require must settle // or throw — handing back a half-initialized namespace is what the strict // policy exists to prevent — so it gets the full deadline. It never slices the // Cocoa runloop: outside boot the loop belongs to the app, and re-entering // arbitrary runloop sources from the middle of a require would run UI callbacks // underneath JS frames. static ModuleEvaluationOptions RequireEvaluationOptions(ModuleEvaluationPolicy policy) { ModuleEvaluationOptions options; options.policy = policy; if (policy == ModuleEvaluationPolicy::kSyncPumping) { options.deadlineSeconds = kModuleEvaluateDeadlineSeconds; options.timeoutBehavior = ModuleEvaluationOptions::TimeoutBehavior::kThrow; options.pumpRunLoop = false; } return options; } static inline bool StartsWith(const std::string& value, const char* prefix) { size_t n = strlen(prefix); return value.size() >= n && value.compare(0, n, prefix) == 0; } static std::string NormalizeHttpModuleUrl(const std::string& path) { if (path.empty()) { return path; } std::string normalized = path; if (StartsWith(normalized, "file://http://") || StartsWith(normalized, "file://https://")) { normalized = normalized.substr(strlen("file://")); } if (normalized.rfind("http:/", 0) == 0 && normalized.rfind("http://", 0) != 0) { normalized.insert(5, "/"); } else if (normalized.rfind("https:/", 0) == 0 && normalized.rfind("https://", 0) != 0) { normalized.insert(6, "/"); } return normalized; } static bool IsHttpModulePath(const std::string& path) { std::string normalized = NormalizeHttpModuleUrl(path); return StartsWith(normalized, "http://") || StartsWith(normalized, "https://"); } static std::string CanonicalizeModulePath(const std::string& path) { if (IsHttpModulePath(path)) { return CanonicalizeHttpUrlKey(NormalizeHttpModuleUrl(path)); } return NormalizePath(path); } // Normalize file system paths to a canonical representation so lookups in // registry remain consistent regardless of how the path was provided. static std::string NormalizePath(const std::string& path) { if (path.empty()) { return path; } NSString* nsPath = [NSString stringWithUTF8String:path.c_str()]; if (nsPath == nil) { return path; } NSString* standardized = [nsPath stringByStandardizingPath]; if (standardized == nil) { return path; } return std::string([standardized UTF8String]); } // Helper function to resolve main entry from package.json with proper extension handling std::string ResolveMainEntryFromPackageJson(const std::string& baseDir) { // Get the main value from package.json id mainValue = Runtime::GetAppConfigValue("main"); NSString* mainEntry = nil; if (mainValue && [mainValue isKindOfClass:[NSString class]]) { mainEntry = (NSString*)mainValue; } else { // Fallback to "index" if no main field found mainEntry = @"index"; } // Try the main entry with different extensions NSString* basePath = [[NSString stringWithUTF8String:baseDir.c_str()] stringByAppendingPathComponent:mainEntry]; // Check if file exists as-is if (tns::Exists([basePath fileSystemRepresentation])) { return std::string([basePath UTF8String]); } // Try with .js extension else if (tns::Exists( [[basePath stringByAppendingPathExtension:@"js"] fileSystemRepresentation])) { return std::string([[basePath stringByAppendingPathExtension:@"js"] UTF8String]); } // Try with .mjs extension else if (tns::Exists( [[basePath stringByAppendingPathExtension:@"mjs"] fileSystemRepresentation])) { return std::string([[basePath stringByAppendingPathExtension:@"mjs"] UTF8String]); } else { // If none found, default to .js (let the loading system handle the error) return std::string([[basePath stringByAppendingPathExtension:@"js"] UTF8String]); } } ModuleInternal::ModuleInternal(Local<Context> context) { Isolate* isolate = v8::Isolate::GetCurrent(); Local<Object> global = context->Global(); TryCatch tc(isolate); Local<Value> result; if (!BuiltinLoader::RunBuiltin(context, BuiltinId::kRequireFactory).ToLocal(&result)) { if (tc.HasCaught()) { tns::LogError(isolate, tc); } Log(@"FATAL: Failed to run require factory script"); return; } if (result.IsEmpty() || !result->IsFunction()) { Log(@"FATAL: Require factory script did not return a function"); return; } this->requireFactoryFunction_ = std::make_unique<Persistent<v8::Function>>(isolate, result.As<v8::Function>()); Local<FunctionTemplate> requireFuncTemplate = FunctionTemplate::New( isolate, RequireCallback, External::New(isolate, this, v8::kExternalPointerTypeTagDefault)); this->requireFunction_ = std::make_unique<Persistent<v8::Function>>( isolate, requireFuncTemplate->GetFunction(context).ToLocalChecked()); // Use shortened path for global require function to avoid V8 parsing issues std::string globalRequirePath = "/app"; Local<v8::Function> globalRequire = GetRequireFunction( isolate, globalRequirePath, RequireEvaluationOptions(ModuleEvaluationPolicy::kSyncStrict)); bool success = global->Set(context, tns::ToV8String(isolate, "require"), globalRequire).FromMaybe(false); if (!success) { Log(@"FATAL: Failed to set global require function"); } } void ModuleInternal::RunModule(Isolate* isolate, std::string path) { // The app entry arrives as "./"; resolve it before deciding how to run it so // an ES module entry takes the module path instead of being require()d. A // required entry would evaluate under the strict policy, which refuses a // top-level-await graph outright — so this is what makes `import`/`export`, // and a TLA entry, legal in an app's main module. Resolved with the same // function the boot backstop's probe uses, so the evaluated module and the // probe agree on the registry key. A CommonJS entry keeps "./" and the // global-require route it has always taken. if (path == "./") { std::string mainEntry = ResolveMainEntryFromPackageJson(RuntimeConfig.ApplicationPath); if (IsESModule(mainEntry) || IsHttpModulePath(mainEntry)) { path = mainEntry; } } std::shared_ptr<Caches> cache = Caches::Get(isolate); Local<Context> context = cache->GetContext(); // The ES module branch compiles and links against isolate->GetCurrentContext(), // and a caller that enters the isolate through a fresh Isolate::Scope // (RunMainScript) has no current context: the one Runtime::Init entered was // popped with Init's own scope. The require branch never needed this because // Function::Call enters the context it is handed. Context::Scope context_scope(context); Local<Object> globalObject = context->Global(); bool isHttpModule = IsHttpModulePath(path); // Ensure global.__dirname is defined so ESM/CommonJS shims relying on it work. { Local<Value> dirVal; bool hasDir = globalObject->Get(context, ToV8String(isolate, "__dirname")).ToLocal(&dirVal); if (!hasDir || dirVal->IsUndefined()) { bool setDir = globalObject ->Set(context, ToV8String(isolate, "__dirname"), ToV8String(isolate, RuntimeConfig.ApplicationPath)) .FromMaybe(false); if (!setDir) { Log(@"Warning: Failed to set __dirname on global object"); } } } // ES module fast path if (IsESModule(path) || isHttpModule) { Local<Value> moduleNamespace; if (isHttpModule) { TNS_DEBUG(Esm, "run-module http-esm begin %s", NormalizeHttpModuleUrl(path).c_str()); } try { // The entry runs before this thread's event loop does, so its graph can // only make progress from the pump inside LoadESModule. moduleNamespace = ModuleInternal::LoadESModule(isolate, path, BootEntryEvaluationOptions(isHttpModule)); } catch (const NativeScriptException& ex) { Runtime* runtime = Runtime::GetRuntime(isolate); bool terminating = isolate->IsExecutionTerminating() || (runtime != nullptr && runtime->IsTerminationRequested()); if (RuntimeConfig.IsDebug && !terminating) { Log(@"***** JavaScript exception occurred *****"); Log(@"Error loading ES module: %s", path.c_str()); Log(@"Exception: %s", ex.getMessage().c_str()); } throw; } if (moduleNamespace.IsEmpty()) { // `LoadESModule` returned an empty value without throwing. Provide a // directional hint; this is the only case with no actual reason text. throw NativeScriptException( std::string("ES module returned empty namespace for ") + path + " — likely a top-level await that never settled; check the device " "console for the matching [esm][evaluate][promise-timeout] entry."); } if (isHttpModule) { TNS_DEBUG(Esm, "run-module http-esm ok %s", NormalizeHttpModuleUrl(path).c_str()); } return; } // For CommonJS modules (.js), use the traditional require() approach Local<Value> requireObj; bool success = globalObject->Get(context, ToV8String(isolate, "require")).ToLocal(&requireObj); if (!success || !requireObj->IsFunction()) { throw NativeScriptException("require function unavailable on globalThis"); } Local<v8::Function> requireFunc = requireObj.As<v8::Function>(); Local<Value> args[] = {ToV8String(isolate, path)}; Local<Value> result; TryCatch tc(isolate); success = requireFunc->Call(context, globalObject, 1, args).ToLocal(&result); if (!success || tc.HasCaught()) { // A termination is caught like an exception but carries no error value; // naming it as the failure keeps it from being reported as one. All three // signals, as in the settle pump: a native frame between here and the // interrupted JS may have swallowed the sentinel on its way out. Runtime* runtime = Runtime::GetRuntime(isolate); if (tc.HasTerminated() || isolate->IsExecutionTerminating() || (runtime != nullptr && runtime->IsTerminationRequested())) { throw NativeScriptException("Module evaluation interrupted by isolate termination: " + path); } if (RuntimeConfig.IsDebug) { Log(@"***** JavaScript exception occurred *****"); Log(@"Error in require() call:"); Log(@" Requested module: '%s'", path.c_str()); Log(@" Called from: %s", RuntimeConfig.ApplicationPath.c_str()); if (tc.HasCaught()) { tns::LogError(isolate, tc); } } // The TryCatch form captures the V8 exception, so a worker boundary can // re-arm it on the isolate (ReThrowToV8) and route it to worker.onerror. if (tc.HasCaught()) { throw NativeScriptException(isolate, tc, std::string("require() failed for module ") + path); } throw NativeScriptException(std::string("require() failed for module ") + path); } } void ModuleInternal::CreateRequireCallback(const FunctionCallbackInfo<Value>& info) { Isolate* isolate = info.GetIsolate(); if (info.Length() < 1 || !info[0]->IsString()) { isolate->ThrowException(Exception::TypeError( tns::ToV8String(isolate, "createRequire expects a base directory string"))); return; } Runtime* runtime = Runtime::GetRuntime(isolate); ModuleInternal* moduleInternal = runtime != nullptr ? runtime->GetModuleInternal() : nullptr; if (moduleInternal == nullptr) { isolate->ThrowException(Exception::Error(tns::ToV8String( isolate, "createRequire is unavailable: this isolate has no module loader"))); return; } std::string dirName = tns::ToString(isolate, info[0].As<v8::String>()); const bool pumping = info.Length() > 1 && info[1]->BooleanValue(isolate); ModuleEvaluationOptions options = RequireEvaluationOptions( pumping ? ModuleEvaluationPolicy::kSyncPumping : ModuleEvaluationPolicy::kSyncStrict); // ns-module.js validates these at mint time and passes undefined for // anything the caller left out, so each present value simply overrides its // default. The numeric one is re-checked here regardless: this binding is a // boundary of its own, and a NaN or infinite deadline makes every deadline // comparison in the pump false, which is an unbounded pump rather than a // long one. if (info.Length() > 2 && info[2]->IsNumber()) { const double deadlineSeconds = info[2].As<v8::Number>()->Value(); if (!std::isfinite(deadlineSeconds) || deadlineSeconds <= 0) { isolate->ThrowException(Exception::TypeError(tns::ToV8String( isolate, "createRequire: 'deadlineSeconds' must be a positive finite number"))); return; } options.deadlineSeconds = deadlineSeconds; } if (info.Length() > 3 && info[3]->IsBoolean()) { options.timeoutBehavior = info[3]->BooleanValue(isolate) ? ModuleEvaluationOptions::TimeoutBehavior::kThrow : ModuleEvaluationOptions::TimeoutBehavior::kReturnPending; } if (info.Length() > 4 && info[4]->IsBoolean()) { options.pumpRunLoop = info[4]->BooleanValue(isolate); } info.GetReturnValue().Set(moduleInternal->GetRequireFunction(isolate, dirName, options)); } bool ModuleInternal::InstallCreateRequireBinding(Local<Context> context, Local<Object> binding) { Isolate* isolate = v8::Isolate::GetCurrent(); Local<v8::Function> fn; if (!v8::Function::New(context, ModuleInternal::CreateRequireCallback).ToLocal(&fn)) { return false; } fn->SetName(tns::ToV8String(isolate, "createRequire")); return binding->CreateDataProperty(context, tns::ToV8String(isolate, "createRequire"), fn) .FromMaybe(false); } Local<v8::Function> ModuleInternal::GetRequireFunction(Isolate* isolate, const std::string& dirName, const ModuleEvaluationOptions& options) { Local<v8::Function> requireFuncFactory = requireFactoryFunction_->Get(isolate); Local<Context> context = isolate->GetCurrentContext(); Local<v8::Function> requireInternalFunc = this->requireFunction_->Get(isolate); Local<Value> args[6]{ requireInternalFunc, tns::ToV8String(isolate, dirName.c_str()), Integer::New(isolate, static_cast<int>(options.policy)), v8::Number::New(isolate, options.deadlineSeconds), v8::Boolean::New(isolate, options.timeoutBehavior == ModuleEvaluationOptions::TimeoutBehavior::kThrow), v8::Boolean::New(isolate, options.pumpRunLoop)}; Local<Value> result; Local<Object> thiz = Object::New(isolate); TryCatch tc(isolate); bool success = requireFuncFactory->Call(context, thiz, 6, args).ToLocal(&result); if (!success || tc.HasCaught()) { if (tc.HasCaught()) { tns::LogError(isolate, tc); } Log(@"FATAL: Failed to call require factory function"); // A require that cannot exist must throw when called, in every build. result = v8::Function::New(context, [](const v8::FunctionCallbackInfo<v8::Value>& info) { info.GetIsolate()->ThrowException(v8::Exception::Error( tns::ToV8String(info.GetIsolate(), "Require function unavailable"))); }).ToLocalChecked(); } if (result.IsEmpty() || !result->IsFunction()) { Log(@"FATAL: Require factory did not return a function"); result = v8::Function::New(context, [](const v8::FunctionCallbackInfo<v8::Value>& info) { info.GetIsolate()->ThrowException(v8::Exception::Error( tns::ToV8String(info.GetIsolate(), "Require function unavailable"))); }).ToLocalChecked(); } return result.As<v8::Function>(); } // Node's `determineSpecificType` (lib/internal/errors.js), so an // ERR_INVALID_ARG_TYPE-shaped message reads the same here as it does there. // Deliberately side-effect free: no getter, no user `toString`, no `inspect`. static std::string DescribeValueForTypeError(Isolate* isolate, Local<Value> value) { if (value.IsEmpty() || value->IsUndefined()) { return "undefined"; } if (value->IsNull()) { return "null"; } if (value->IsFunction()) { std::string name = tns::ToString(isolate, value.As<v8::Function>()->GetName()); return name.empty() ? "an instance of Function" : "function " + name; } if (value->IsObject()) { std::string ctorName = tns::ToString(isolate, value.As<Object>()->GetConstructorName()); return ctorName.empty() ? "an object" : "an instance of " + ctorName; } // A primitive: `type <typeof> (<value>)`. const char* typeName = "object"; std::string rendered; if (value->IsBoolean()) { typeName = "boolean"; rendered = value->IsTrue() ? "true" : "false"; } else if (value->IsNumber()) { typeName = "number"; double number = value.As<v8::Number>()->Value(); // String(-0) is "0", but Node renders the sign, and losing it here would // hide exactly the distinction the message is meant to surface. rendered = (number == 0 && std::signbit(number)) ? "-0" : tns::ToString(isolate, value); } else if (value->IsBigInt()) { typeName = "bigint"; rendered = tns::ToString(isolate, value) + "n"; } else if (value->IsSymbol()) { typeName = "symbol"; Local<Value> description = value.As<v8::Symbol>()->Description(isolate); rendered = "Symbol(" + (description->IsUndefined() ? std::string() : tns::ToString(isolate, description)) + ")"; } else { rendered = tns::ToString(isolate, value); } if (rendered.size() > 28) { rendered = rendered.substr(0, 25) + "..."; } return "type " + std::string(typeName) + " (" + rendered + ")"; } void ModuleInternal::RequireCallback(const FunctionCallbackInfo<Value>& info) { Isolate* isolate = info.GetIsolate(); // Every path below assumes a string specifier — the builtin probe, the // http(s) guard and the filesystem resolution all read it — so reject a // non-string before any of them rather than casting one unchecked. if (info.Length() < 1 || !info[0]->IsString()) { Local<Value> received = info.Length() < 1 ? Local<Value>() : info[0]; isolate->ThrowException(Exception::TypeError( tns::ToV8String(isolate, "The \"id\" argument must be of type string. Received " + DescribeValueForTypeError(isolate, received)))); return; } // Builtin modules resolve before any path handling, so they can never be // shadowed by a file or a package, and an unknown one fails as a missing // builtin rather than as a missing file. Only prefixed specifiers get here: // a bare `util` still resolves through npm. { std::string specifier = tns::ToString(isolate, info[0].As<v8::String>()); if (NsBuiltinModules::IsBuiltinScheme(specifier)) { Local<Context> context = isolate->GetCurrentContext(); Local<Object> exports; if (NsBuiltinModules::GetExports(context, specifier).ToLocal(&exports)) { info.GetReturnValue().Set(exports); } else if (!NsBuiltinModules::IsRegistered(specifier)) { isolate->ThrowException(Exception::Error( tns::ToV8String(isolate, NsBuiltinModules::NotFoundMessage(specifier)))); } return; } // Node-API addons claim a bare name only, so a path can never be diverted // into the addon registry, and builtins keep priority over both. if (IsBareSpecifier(specifier) && NapiModules::IsRegistered(specifier)) { Local<Context> context = isolate->GetCurrentContext(); Local<Object> exports; if (NapiModules::GetExports(context, specifier).ToLocal(&exports)) { info.GetReturnValue().Set(exports); } else if (!isolate->HasPendingException()) { // The addon is registered but failed to initialize. Returning // undefined would hand the caller a module-shaped hole to trip over // later; the failure belongs at the require() call. isolate->ThrowException(Exception::Error( tns::ToV8String(isolate, "Failed to initialize Node-API module '" + specifier + "'"))); } return; } } // Declare these outside try block so they're available in catch std::string moduleName; std::string callingModuleDirName; NSString* fullPath = nil; try { // Guard: URL-based modules must be loaded via dynamic import() in dev HTTP ESM mode. moduleName = tns::ToString(isolate, info[0]); if (moduleName.rfind("http://", 0) == 0 || moduleName.rfind("https://", 0) == 0) { std::string msg = std::string("NativeScript: require() of URL module is not supported: ") + moduleName + ". Use dynamic import() instead."; throw NativeScriptException(msg.c_str()); } ModuleInternal* moduleInternal = static_cast<ModuleInternal*>( info.Data().As<External>()->Value(v8::kExternalPointerTypeTagDefault)); moduleName = tns::ToString(isolate, info[0].As<v8::String>()); callingModuleDirName = tns::ToString(isolate, info[1].As<v8::String>()); // The require factory forwards the options its require was minted with; // an absent policy is the strict default every ordinary require uses. ModuleEvaluationPolicy policy = ModuleEvaluationPolicy::kSyncStrict; if (info.Length() > 2 && info[2]->IsInt32() && info[2].As<Int32>()->Value() == static_cast<int>(ModuleEvaluationPolicy::kSyncPumping)) { policy = ModuleEvaluationPolicy::kSyncPumping; } ModuleEvaluationOptions evaluationOptions = RequireEvaluationOptions(policy); if (info.Length() > 3 && info[3]->IsNumber()) { evaluationOptions.deadlineSeconds = info[3].As<v8::Number>()->Value(); } if (info.Length() > 4 && info[4]->IsBoolean()) { evaluationOptions.timeoutBehavior = info[4]->BooleanValue(isolate) ? ModuleEvaluationOptions::TimeoutBehavior::kThrow : ModuleEvaluationOptions::TimeoutBehavior::kReturnPending; } if (info.Length() > 5 && info[5]->IsBoolean()) { evaluationOptions.pumpRunLoop = info[5]->BooleanValue(isolate); } // Expand shortened paths back to full paths for file resolution if (callingModuleDirName.length() > 0 && callingModuleDirName.substr(0, 4) == "/app") { std::string expandedPath = RuntimeConfig.ApplicationPath + callingModuleDirName.substr(4); callingModuleDirName = expandedPath; } // Special handling for "./" - resolve to main entry point from package.json if (moduleName == "./") { std::string mainEntryPath = ResolveMainEntryFromPackageJson(RuntimeConfig.ApplicationPath); fullPath = [NSString stringWithUTF8String:mainEntryPath.c_str()]; } else if (moduleName.length() > 0 && moduleName[0] != '/') { if (moduleName[0] == '.') { NSString* callingDirNS = [NSString stringWithUTF8String:callingModuleDirName.c_str()]; NSString* moduleNameNS = [NSString stringWithUTF8String:moduleName.c_str()]; fullPath = [[callingDirNS stringByAppendingPathComponent:moduleNameNS] stringByStandardizingPath]; } else if (moduleName[0] == '~') { // `~` is the app-root alias, so what follows it is a path relative to // the app root whether or not the caller wrote the separator. std::string relative = moduleName.substr(1); size_t firstSegment = relative.find_first_not_of('/'); relative = firstSegment == std::string::npos ? std::string() : relative.substr(firstSegment); fullPath = [[NSString stringWithUTF8String:RuntimeConfig.ApplicationPath.c_str()] stringByAppendingPathComponent:[NSString stringWithUTF8String:relative.c_str()]]; } else { // Default: resolve in tns_modules (shared folder override removed) NSString* tnsModulesPath = [[NSString stringWithUTF8String:RuntimeConfig.ApplicationPath.c_str()] stringByAppendingPathComponent:@"tns_modules"]; fullPath = [tnsModulesPath stringByAppendingPathComponent:[NSString stringWithUTF8String:moduleName.c_str()]]; const char* path1 = [fullPath fileSystemRepresentation]; const char* path2 = [[fullPath stringByAppendingPathExtension:@"js"] fileSystemRepresentation]; const char* path3 = [[fullPath stringByAppendingPathExtension:@"mjs"] fileSystemRepresentation]; if (!tns::Exists(path1) && !tns::Exists(path2) && !tns::Exists(path3)) { fullPath = [tnsModulesPath stringByAppendingPathComponent:@"tns-core-modules"]; fullPath = [fullPath stringByAppendingPathComponent:[NSString stringWithUTF8String:moduleName.c_str()]]; } } } else { fullPath = [NSString stringWithUTF8String:moduleName.c_str()]; } NSString* fileNameOnly = [fullPath lastPathComponent]; NSString* pathOnly = [fullPath stringByDeletingLastPathComponent]; bool isData = false; Local<Object> moduleObj = moduleInternal->LoadImpl( isolate, [fileNameOnly UTF8String], [pathOnly UTF8String], isData, evaluationOptions); if (moduleObj.IsEmpty()) { return; } if (isData) { // moduleObj is guaranteed to be non-empty here due to check above info.GetReturnValue().Set(moduleObj); } else { Local<Context> context = isolate->GetCurrentContext(); Local<Value> exportsObj; bool success = moduleObj->Get(context, tns::ToV8String(isolate, "exports")).ToLocal(&exportsObj); if (success) { info.GetReturnValue().Set(exportsObj); } else { Log(@"Warning: Failed to get exports from module object"); } } } catch (NativeScriptException& ex) { // Rethrown as-is. Wrapping it in a fresh Error erased the original's class // and identity, so `catch (e) { e instanceof TypeError }` — and any // reference comparison against a module's own exported error — silently // stopped working for anything thrown through a require(). TNS_DEBUG(Esm, "[require][fail] module=%s from=%s resolved=%s: %s", moduleName.c_str(), callingModuleDirName.c_str(), fullPath != nil ? [fullPath UTF8String] : "<unresolved>", ex.getMessage().c_str()); ex.ReThrowToV8(isolate); } } Local<Object> ModuleInternal::LoadImpl(Isolate* isolate, const std::string& moduleName, const std::string& baseDir, bool& isData, const ModuleEvaluationOptions& options) { // The specifier goes into the key verbatim. Stripping its extension made // './config.js' and './config.json' the same key, so whichever loaded first // answered for both. Specifier spellings that differ but resolve to one file // ('./x' and './x.js') still share a module: they meet again at the // resolved-path lookup below, which is the identity that matters. std::string cacheKey = baseDir + "*" + moduleName; auto it = this->loadedModules_.find(cacheKey); if (it != this->loadedModules_.end()) { return it->second->Get(isolate); } Local<Object> moduleObj; std::string path; try { path = this->ResolvePath(isolate, baseDir, moduleName); } catch (NativeScriptException& ex) { // Add context about the module resolution std::string contextMsg = "Failed to resolve module: '" + moduleName + "'"; contextMsg += "\n Base directory: " + baseDir; contextMsg += "\n Module name: " + moduleName; contextMsg += "\n\nOriginal error:\n" + ex.getMessage(); throw NativeScriptException(isolate, contextMsg, "Error"); } if (path.empty()) { throw NativeScriptException(isolate, "Cannot find module '" + moduleName + "'", "Error"); } NSString* pathStr = [NSString stringWithUTF8String:path.c_str()]; NSString* extension = [pathStr pathExtension]; if ([extension isEqualToString:@"json"]) { isData = true; } auto it2 = this->loadedModules_.find(path); if (it2 != this->loadedModules_.end()) { return it2->second->Get(isolate); } if ([extension isEqualToString:@"mjs"] || [extension isEqualToString:@"js"]) { moduleObj = this->LoadModule(isolate, path, cacheKey, options); } else if ([extension isEqualToString:@"json"]) { moduleObj = this->LoadData(isolate, path); } else { // Throw an error for unsupported file extension instead of crashing std::string errorMsg = "Unsupported file extension: " + std::string([extension UTF8String]); throw NativeScriptException(errorMsg); } return moduleObj; } static bool NamespaceHasOwn(Isolate* isolate, Local<Context> context, Local<Object> ns, const char* name) { return ns->HasOwnProperty(context, tns::ToV8String(isolate, name)).FromMaybe(false); } // The live compiled module behind a registry key, or empty. static Local<Module> RegisteredModuleForPath(Isolate* isolate, const std::string& canonicalPath) { auto* registryPtr = ModuleRegistryFor(isolate); if (registryPtr == nullptr) { return Local<Module>(); } auto it = registryPtr->find(canonicalPath); if (it == registryPtr->end()) { return Local<Module>(); } return it->second.Get(isolate); } // What `require()` of an ES module hands back, per Node's // populateCJSExportsFromESM: an explicit `module.exports` export wins outright; // a namespace with no default export, or one that already declares // __esModule, passes through untouched; everything else gets the facade so // transpiled consumers reading `_mod.__esModule ? _mod.default : _mod` find the // default. Export names are arbitrary strings, hence the own-property probes. static Local<Value> RequireExportsForNamespace(Isolate* isolate, Local<Context> context, Local<Object> ns, const std::string& canonicalPath) { TryCatch tc(isolate); if (NamespaceHasOwn(isolate, context, ns, "module.exports")) { Local<Value> moduleExports; if (!ns->Get(context, tns::ToV8String(isolate, "module.exports")).ToLocal(&moduleExports)) { throw NativeScriptException(isolate, tc, "Cannot read the 'module.exports' export of " + canonicalPath); } return moduleExports; } bool hasDefault = NamespaceHasOwn(isolate, context, ns, "default"); bool hasEsModuleMarker = NamespaceHasOwn(isolate, context, ns, "__esModule"); if (!hasDefault || hasEsModuleMarker) { return ns; } Local<Module> target = RegisteredModuleForPath(isolate, canonicalPath); if (target.IsEmpty()) { // The load that produced this namespace registered the module under this // very key, so a miss means the registry and the namespace disagree — // returning the bare namespace would drop __esModule and misroute every // transpiled consumer downstream. throw NativeScriptException( "require() cannot build the exports facade for " + canonicalPath + ": the module evaluated but is absent from the registry under its canonical key"); } Local<Module> facade; if (!GetOrCreateRequireFacade(isolate, context, target, canonicalPath).ToLocal(&facade)) { throw NativeScriptException("Cannot build the require() exports facade for " + canonicalPath); } return facade->GetModuleNamespace(); } Local<Object> ModuleInternal::LoadModule(Isolate* isolate, const std::string& modulePath, const std::string& cacheKey, const ModuleEvaluationOptions& options) { Local<Object> moduleObj = Object::New(isolate); Local<Object> exportsObj = Object::New(isolate); Local<Context> context = isolate->GetCurrentContext(); bool success = moduleObj->Set(context, tns::ToV8String(isolate, "exports"), exportsObj).FromMaybe(false); if (!success) { Log(@"Warning: Failed to set exports property on module object"); } const PropertyAttribute readOnlyFlags = static_cast<PropertyAttribute>(PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly); Local<v8::String> fileName = tns::ToV8String(isolate, modulePath); success = moduleObj->DefineOwnProperty(context, tns::ToV8String(isolate, "id"), fileName, readOnlyFlags) .FromMaybe(false); if (!success) { Log(@"Warning: Failed to set id property on module object"); } std::shared_ptr<Persistent<Object>> poModuleObj = std::make_shared<Persistent<Object>>(isolate, moduleObj); TempModule tempModule(this, modulePath, cacheKey, poModuleObj); // Compile/load the JavaScript/ESM source Local<Value> scriptValue = LoadScript(isolate, modulePath, options); if (scriptValue.IsEmpty()) { throw NativeScriptException(isolate, "Script loading failed for " + modulePath); } // Check if this is an ES module bool isESM = IsESModule(modulePath); if (isESM) { // For ES modules, the returned value is the namespace object if (scriptValue.IsEmpty()) { throw NativeScriptException(isolate, "ES module load returned empty value " + modulePath); } if (!scriptValue->IsObject()) { throw NativeScriptException(isolate, "Failed to load ES module " + modulePath); } Local<Value> esmExports = RequireExportsForNamespace(isolate, context, scriptValue.As<Object>(), CanonicalizeModulePath(modulePath)); bool succ = moduleObj->Set(context, tns::ToV8String(isolate, "exports"), esmExports).FromMaybe(false); if (!succ) { Log(@"Warning: Failed to set exports property after module execution"); } tempModule.SaveToCache(); return moduleObj; } // Check if this is the main application bundle (webpack-style IIFE) std::string appPath = RuntimeConfig.ApplicationPath; std::string bundlePath = appPath + "/bundle.js"; if (modulePath == bundlePath) { // Main application bundle is a webpack-style IIFE that executes immediately // It doesn't return a function, so we just create an empty exports object tempModule.SaveToCache(); return moduleObj; } // Classic CommonJS path – expect a factory function. if (!scriptValue->IsFunction()) { throw NativeScriptException(isolate, "Expected module factory to be a function for " + modulePath); } v8::Local<v8::Function> moduleFunc = scriptValue.As<v8::Function>(); { TryCatch tc(isolate); // moduleFunc = script->Run(context).ToLocalChecked().As<v8::Function>(); if (tc.HasCaught()) { throw NativeScriptException(isolate, tc, "Error running script " + modulePath); } } std::string parentDir = [[[NSString stringWithUTF8String:modulePath.c_str()] stringByDeletingLastPathComponent] UTF8String]; // Shorten the parentDir for GetRequireFunction to avoid V8 parsing issues with long paths std::string shortParentDir; if (parentDir.length() >= RuntimeConfig.ApplicationPath.length() && parentDir.compare(0, RuntimeConfig.ApplicationPath.length(), RuntimeConfig.ApplicationPath) == 0) { shortParentDir = "/app" + parentDir.substr(RuntimeConfig.ApplicationPath.length()); } else { // Fallback: use the entire path if it doesn't start with ApplicationPath shortParentDir = parentDir; } // A module's own require inherits the options it was loaded under, so a // pumping require stays pumping — with the same deadline and timeout // behavior — all the way down its dependency tree. Local<v8::Function> require = GetRequireFunction(isolate, shortParentDir, options); // Use full paths for __filename and __dirname to match module.id Local<Value> requireArgs[5]{moduleObj, exportsObj, require, tns::ToV8String(isolate, modulePath.c_str()), tns::ToV8String(isolate, parentDir.c_str())}; success = moduleObj->Set(context, tns::ToV8String(isolate, "require"), require).FromMaybe(false); if (!success) { Log(@"Warning: Failed to set require property on module object"); } { TryCatch tc(isolate); Local<Value> result; Local<Object> thiz = Object::New(isolate); success = moduleFunc->Call(context, thiz, sizeof(requireArgs) / sizeof(Local<Value>), requireArgs) .ToLocal(&result); if (!success || tc.HasCaught()) { Runtime* runtime = Runtime::GetRuntime(isolate); if (tc.HasTerminated() || isolate->IsExecutionTerminating() || (runtime != nullptr && runtime->IsTerminationRequested())) { throw NativeScriptException("Module evaluation interrupted by isolate termination: " + modulePath); } throw NativeScriptException(isolate, tc, "Error calling module function"); } } tempModule.SaveToCache(); return moduleObj; } Local<Object> ModuleInternal::LoadData(Isolate* isolate, const std::string& modulePath) { Local<Object> json; std::string jsonData = tns::ReadText(modulePath); Local<v8::String> jsonStr = tns::ToV8String(isolate, jsonData); Local<Context> context = isolate->GetCurrentContext(); TryCatch tc(isolate); MaybeLocal<Value> maybeValue = JSON::Parse(context, jsonStr); if (maybeValue.IsEmpty() || tc.HasCaught()) { std::string errMsg = "Cannot parse JSON file " + modulePath; throw NativeScriptException(isolate, tc, errMsg); } Local<Value> value = maybeValue.ToLocalChecked(); if (!value->IsObject()) { std::string errMsg = "JSON is not valid, file=" + modulePath; throw NativeScriptException(errMsg); } json = value.As<Object>(); this->loadedModules_.emplace(modulePath, std::make_shared<Persistent<Object>>(isolate, json)); return json; } Local<Value> ModuleInternal::LoadScript(Isolate* isolate, const std::string& path, const ModuleEvaluationOptions& options) { std::string canonicalPath = NormalizePath(path); if (IsESModule(canonicalPath)) { // Treat all .mjs files as standard ES modules. require()'s default route // cannot wait: an async graph is refused rather than pumped. return ModuleInternal::LoadESModule(isolate, canonicalPath, options); } Local<Script> script = ModuleInternal::LoadClassicScript(isolate, canonicalPath); if (script.IsEmpty()) { throw NativeScriptException(isolate, "Classic script compilation failed for " + canonicalPath); } // run it and return the value with proper exception handling Local<Context> context = isolate->GetCurrentContext(); TryCatch tc(isolate); Local<Value> result; if (!script->Run(context).ToLocal(&result)) { if (RuntimeConfig.IsDebug) { Log(@"***** JavaScript exception occurred *****"); Log(@"Error executing script: %s", canonicalPath.c_str()); if (tc.HasCaught()) { tns::LogError(isolate, tc); } } if (tc.HasCaught()) { throw NativeScriptException(isolate, tc, "Cannot execute script " + canonicalPath); } throw NativeScriptException(isolate, "Script execution failed for " + canonicalPath); } return result; } Local<Script> ModuleInternal::LoadClassicScript(Isolate* isolate, const std::string& path) { std::string canonicalPath = NormalizePath(path); // Ensure the resolved path maps to an actual regular file before attempting // to read/compile it. This prevents `ReadModule` from aborting the process // when given a directory or non-existent path. struct stat st; if (stat(canonicalPath.c_str(), &st) != 0 || !S_ISREG(st.st_mode)) { throw NativeScriptException("Cannot find module " + canonicalPath); } auto context = isolate->GetCurrentContext(); // build URL std::string base = ReplaceAll(canonicalPath, RuntimeConfig.BaseDir, ""); std::string url = "file://" + base; // wrap & cache lookup Local<v8::String> sourceText = ModuleInternal::WrapModuleContent(isolate, canonicalPath); auto* cacheData = ModuleInternal::LoadScriptCache(canonicalPath, ScriptCacheKind::kClassicScript); // note: is_module=false here Local<v8::String> urlString; if (!v8::String::NewFromUtf8(isolate, url.c_str(), NewStringType::kNormal).ToLocal(&urlString)) { throw NativeScriptException(isolate, "Failed to create URL string for script " + canonicalPath); |
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