Realm-js: The dreaded "Missing Realm constructor" still

[fungilation]

This is obviously a commonly occurring issue, since you have it linked in the docs. Is this a heisenbug that won't go away?

I'm only testing integration with import Realm from 'realm'. In iOS simulator, no crash or issue happens. But once built on XCode and run on device, my app would crash on launch, with this XCode console output:

*** Terminating app due to uncaught exception 'RCTFatalException: Unhandled JS Exception: Missing Realm constructor. Did you run "react-native link realm"? Please see https://realm.io/docs/react-native/latest/#missing-realm-constructor for troubleshooting', reason: 'Unhandled JS Exception: Missing Realm constructor. Did you run "react-nativ..., stack:
a@577:484
<unknown>@577:926
n@2:553
<unknown>@371:7765
n@2:553
<unknown>@12:435
n@2:553
i@2:266
global code@600:9
'
*** First throw call stack:
(0x183ec6fe0 0x182928538 0x183ec6f28 0x10017532c 0x10016f758 0x183ecce80 0x183dc22c4 0x183dc6e9c 0x1001731f8 0x1001c0cfc 0x1001c0b68 0x101029a50 0x101029a10 0x1010372e8 0x10102d634 0x101037810 0x101039630 0x10103939c 0x182f87100 0x182f86cac)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) 

Version of Realm and Tooling

• Realm JS SDK Version: 1.8.3
• Node or React Nattive: node 8.1.3, RN 0.46.1
• Client OS & Version: iOS 10 built on MacOS 10.12.5
• Which debugger for React Native: None (on device, building from XCode)

I'm also using CocoaPods (for react-native-firebase). I'm seeing some other issues filed that have issue with Pods too, if this is a known pattern that Realm doesn't play nice with Pods? I'm not linking Realm with Pods FYI, I'm following the docs and linked with react-native link.

[fungilation]

I tried react-native uninstall realm and react-native install realm. Rebuild in XCode and now I'm hitting a build error, before it could even finish building and running my app on device like I could before, above.

XCode output below on Shell Script Invocation Error in double-conversion:

PhaseScriptExecution Install\ Third\ Party /Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/Script-190EE32F1E6A43DE00A8543A.sh
    cd /Users/<user>/Documents/code/<project>/node_modules/react-native/React
    export ACTION=build
    export AD_HOC_CODE_SIGNING_ALLOWED=NO
    export ALTERNATE_GROUP=staff
    export ALTERNATE_MODE=u+w,go-w,a+rX
    export ALTERNATE_OWNER=gary
    export ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES=NO
    export ALWAYS_SEARCH_USER_PATHS=NO
    export ALWAYS_USE_SEPARATE_HEADERMAPS=NO
    export APPLE_INTERNAL_DEVELOPER_DIR=/AppleInternal/Developer
    export APPLE_INTERNAL_DIR=/AppleInternal
    export APPLE_INTERNAL_DOCUMENTATION_DIR=/AppleInternal/Documentation
    export APPLE_INTERNAL_LIBRARY_DIR=/AppleInternal/Library
    export APPLE_INTERNAL_TOOLS=/AppleInternal/Developer/Tools
    export APPLICATION_EXTENSION_API_ONLY=NO
    export APPLY_RULES_IN_COPY_FILES=NO
    export ARCHS="armv7 arm64"
    export ARCHS_STANDARD="armv7 arm64"
    export ARCHS_STANDARD_32_64_BIT="armv7 arm64"
    export ARCHS_STANDARD_32_BIT=armv7
    export ARCHS_STANDARD_64_BIT=arm64
    export ARCHS_STANDARD_INCLUDING_64_BIT="armv7 arm64"
    export ARCHS_UNIVERSAL_IPHONE_OS="armv7 arm64"
    export AVAILABLE_PLATFORMS="appletvos appletvsimulator iphoneos iphonesimulator macosx watchos watchsimulator"
    export BITCODE_GENERATION_MODE=marker
    export BUILD_ACTIVE_RESOURCES_ONLY=YES
    export BUILD_COMPONENTS="headers build"
    export BUILD_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products
    export BUILD_ROOT=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products
    export BUILD_STYLE=
    export BUILD_VARIANTS=normal
    export BUILT_PRODUCTS_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos
    export CACHE_ROOT=/var/folders/q2/nn87n125621g5t3h_n_nx4vw0000gn/C/com.apple.DeveloperTools/8.3.3-8E3004b/Xcode
    export CCHROOT=/var/folders/q2/nn87n125621g5t3h_n_nx4vw0000gn/C/com.apple.DeveloperTools/8.3.3-8E3004b/Xcode
    export CHMOD=/bin/chmod
    export CHOWN=/usr/sbin/chown
    export CLANG_ANALYZER_NONNULL=YES
    export CLANG_CXX_LANGUAGE_STANDARD=gnu++0x
    export CLANG_CXX_LIBRARY=libc++
    export CLANG_ENABLE_MODULES=YES
    export CLANG_ENABLE_MODULE_DEBUGGING=NO
    export CLANG_ENABLE_OBJC_ARC=YES
    export CLANG_MODULES_BUILD_SESSION_FILE=/Users/<user>/Library/Developer/Xcode/DerivedData/ModuleCache/Session.modulevalidation
    export CLANG_WARN_BOOL_CONVERSION=YES
    export CLANG_WARN_CONSTANT_CONVERSION=YES
    export CLANG_WARN_DIRECT_OBJC_ISA_USAGE=YES_ERROR
    export CLANG_WARN_DOCUMENTATION_COMMENTS=YES
    export CLANG_WARN_EMPTY_BODY=YES
    export CLANG_WARN_ENUM_CONVERSION=YES
    export CLANG_WARN_INFINITE_RECURSION=YES
    export CLANG_WARN_INT_CONVERSION=YES
    export CLANG_WARN_OBJC_ROOT_CLASS=YES_ERROR
    export CLANG_WARN_SUSPICIOUS_MOVE=YES
    export CLANG_WARN_SUSPICIOUS_MOVES=YES
    export CLANG_WARN_UNREACHABLE_CODE=YES
    export CLANG_WARN__DUPLICATE_METHOD_MATCH=YES
    export CLASS_FILE_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/JavaClasses
    export CLEAN_PRECOMPS=YES
    export CLONE_HEADERS=NO
    export CODESIGNING_FOLDER_PATH=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos/libdouble-conversion.a
    export CODE_SIGNING_ALLOWED=NO
    export CODE_SIGNING_REQUIRED=YES
    export CODE_SIGN_CONTEXT_CLASS=XCiPhoneOSCodeSignContext
    export CODE_SIGN_IDENTITY="iPhone Developer"
    export COLOR_DIAGNOSTICS=NO
    export COMBINE_HIDPI_IMAGES=NO
    export COMMAND_MODE=legacy
    export COMPOSITE_SDK_DIRS=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/CompositeSDKs
    export COMPRESS_PNG_FILES=YES
    export CONFIGURATION=Release
    export CONFIGURATION_BUILD_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos
    export CONFIGURATION_TEMP_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos
    export COPYING_PRESERVES_HFS_DATA=NO
    export COPY_HEADERS_RUN_UNIFDEF=NO
    export COPY_PHASE_STRIP=NO
    export COPY_RESOURCES_FROM_STATIC_FRAMEWORKS=YES
    export CORRESPONDING_SIMULATOR_PLATFORM_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform
    export CORRESPONDING_SIMULATOR_PLATFORM_NAME=iphonesimulator
    export CORRESPONDING_SIMULATOR_SDK_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.3.sdk
    export CORRESPONDING_SIMULATOR_SDK_NAME=iphonesimulator10.3
    export CP=/bin/cp
    export CREATE_INFOPLIST_SECTION_IN_BINARY=NO
    export CURRENT_ARCH=arm64
    export CURRENT_VARIANT=normal
    export DEAD_CODE_STRIPPING=YES
    export DEBUGGING_SYMBOLS=YES
    export DEBUG_INFORMATION_FORMAT=dwarf-with-dsym
    export DEFAULT_COMPILER=com.apple.compilers.llvm.clang.1_0
    export DEFAULT_KEXT_INSTALL_PATH=/System/Library/Extensions
    export DEFINES_MODULE=NO
    export DEPLOYMENT_LOCATION=NO
    export DEPLOYMENT_POSTPROCESSING=NO
    export DEPLOYMENT_TARGET_CLANG_ENV_NAME=IPHONEOS_DEPLOYMENT_TARGET
    export DEPLOYMENT_TARGET_CLANG_FLAG_NAME=miphoneos-version-min
    export DEPLOYMENT_TARGET_CLANG_FLAG_PREFIX=-miphoneos-version-min=
    export DEPLOYMENT_TARGET_SETTING_NAME=IPHONEOS_DEPLOYMENT_TARGET
    export DEPLOYMENT_TARGET_SUGGESTED_VALUES="8.0 8.1 8.2 8.3 8.4 9.0 9.1 9.2 9.3 10.0 10.1 10.2 10.3"
    export DERIVED_FILES_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/DerivedSources
    export DERIVED_FILE_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/DerivedSources
    export DERIVED_SOURCES_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/DerivedSources
    export DEVELOPER_APPLICATIONS_DIR=/Applications/Xcode.app/Contents/Developer/Applications
    export DEVELOPER_BIN_DIR=/Applications/Xcode.app/Contents/Developer/usr/bin
    export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
    export DEVELOPER_FRAMEWORKS_DIR=/Applications/Xcode.app/Contents/Developer/Library/Frameworks
    export DEVELOPER_FRAMEWORKS_DIR_QUOTED=/Applications/Xcode.app/Contents/Developer/Library/Frameworks
    export DEVELOPER_LIBRARY_DIR=/Applications/Xcode.app/Contents/Developer/Library
    export DEVELOPER_SDK_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs
    export DEVELOPER_TOOLS_DIR=/Applications/Xcode.app/Contents/Developer/Tools
    export DEVELOPER_USR_DIR=/Applications/Xcode.app/Contents/Developer/usr
    export DEVELOPMENT_LANGUAGE=English
    export DEVELOPMENT_TEAM=V9WTTPBFK9
    export DO_HEADER_SCANNING_IN_JAM=NO
    export DSTROOT=/tmp/React.dst
    export DT_TOOLCHAIN_DIR=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
    export DWARF_DSYM_FILE_NAME=libdouble-conversion.a.dSYM
    export DWARF_DSYM_FILE_SHOULD_ACCOMPANY_PRODUCT=NO
    export DWARF_DSYM_FOLDER_PATH=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos
    export EFFECTIVE_PLATFORM_NAME=-iphoneos
    export EMBEDDED_CONTENT_CONTAINS_SWIFT=NO
    export EMBEDDED_PROFILE_NAME=embedded.mobileprovision
    export EMBED_ASSET_PACKS_IN_PRODUCT_BUNDLE=NO
    export ENABLE_BITCODE=YES
    export ENABLE_DEFAULT_HEADER_SEARCH_PATHS=YES
    export ENABLE_HEADER_DEPENDENCIES=YES
    export ENABLE_NS_ASSERTIONS=NO
    export ENABLE_ON_DEMAND_RESOURCES=NO
    export ENABLE_STRICT_OBJC_MSGSEND=YES
    export ENABLE_TESTABILITY=NO
    export ENTITLEMENTS_REQUIRED=YES
    export EXCLUDED_INSTALLSRC_SUBDIRECTORY_PATTERNS=".DS_Store .svn .git .hg CVS"
    export EXCLUDED_RECURSIVE_SEARCH_PATH_SUBDIRECTORIES="*.nib *.lproj *.framework *.gch *.xcode* *.xcassets (*) .DS_Store CVS .svn .git .hg *.pbproj *.pbxproj"
    export EXECUTABLE_EXTENSION=a
    export EXECUTABLE_NAME=libdouble-conversion.a
    export EXECUTABLE_PATH=libdouble-conversion.a
    export EXECUTABLE_PREFIX=lib
    export EXECUTABLE_SUFFIX=.a
    export EXPANDED_CODE_SIGN_IDENTITY=
    export EXPANDED_CODE_SIGN_IDENTITY_NAME=
    export EXPANDED_PROVISIONING_PROFILE=
    export FILE_LIST=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/Objects/LinkFileList
    export FIXED_FILES_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/FixedFiles
    export FRAMEWORK_FLAG_PREFIX=-framework
    export FRAMEWORK_SEARCH_PATHS="/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos "
    export FRAMEWORK_VERSION=A
    export FULL_PRODUCT_NAME=libdouble-conversion.a
    export GCC3_VERSION=3.3
    export GCC_C_LANGUAGE_STANDARD=gnu99
    export GCC_NO_COMMON_BLOCKS=YES
    export GCC_PFE_FILE_C_DIALECTS="c objective-c c++ objective-c++"
    export GCC_THUMB_SUPPORT=YES
    export GCC_TREAT_WARNINGS_AS_ERRORS=NO
    export GCC_VERSION=com.apple.compilers.llvm.clang.1_0
    export GCC_VERSION_IDENTIFIER=com_apple_compilers_llvm_clang_1_0
    export GCC_WARN_64_TO_32_BIT_CONVERSION=YES
    export GCC_WARN_ABOUT_MISSING_PROTOTYPES=YES
    export GCC_WARN_ABOUT_RETURN_TYPE=YES_ERROR
    export GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED=YES
    export GCC_WARN_SHADOW=YES
    export GCC_WARN_UNDECLARED_SELECTOR=YES
    export GCC_WARN_UNINITIALIZED_AUTOS=YES_AGGRESSIVE
    export GCC_WARN_UNUSED_FUNCTION=YES
    export GCC_WARN_UNUSED_VARIABLE=YES
    export GENERATE_MASTER_OBJECT_FILE=NO
    export GENERATE_PKGINFO_FILE=NO
    export GENERATE_PROFILING_CODE=NO
    export GENERATE_TEXT_BASED_STUBS=NO
    export GID=20
    export GROUP=staff
    export HEADERMAP_INCLUDES_FLAT_ENTRIES_FOR_TARGET_BEING_BUILT=YES
    export HEADERMAP_INCLUDES_FRAMEWORK_ENTRIES_FOR_ALL_PRODUCT_TYPES=YES
    export HEADERMAP_INCLUDES_NONPUBLIC_NONPRIVATE_HEADERS=YES
    export HEADERMAP_INCLUDES_PROJECT_HEADERS=YES
    export HEADERMAP_USES_FRAMEWORK_PREFIX_ENTRIES=YES
    export HEADERMAP_USES_VFS=NO
    export HEADER_SEARCH_PATHS="/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos/include "
    export HIDE_BITCODE_SYMBOLS=YES
    export HOME=/Users/<user>
    export ICONV=/usr/bin/iconv
    export INFOPLIST_EXPAND_BUILD_SETTINGS=YES
    export INFOPLIST_OUTPUT_FORMAT=binary
    export INFOPLIST_PREPROCESS=NO
    export INLINE_PRIVATE_FRAMEWORKS=NO
    export INSTALLHDRS_COPY_PHASE=NO
    export INSTALLHDRS_SCRIPT_PHASE=NO
    export INSTALL_DIR=/tmp/React.dst/usr/local/lib
    export INSTALL_GROUP=staff
    export INSTALL_MODE_FLAG=u+w,go-w,a+rX
    export INSTALL_OWNER=gary
    export INSTALL_PATH=/usr/local/lib
    export INSTALL_ROOT=/tmp/React.dst
    export IPHONEOS_DEPLOYMENT_TARGET=8.0
    export JAVAC_DEFAULT_FLAGS="-J-Xms64m -J-XX:NewSize=4M -J-Dfile.encoding=UTF8"
    export JAVA_APP_STUB=/System/Library/Frameworks/JavaVM.framework/Resources/MacOS/JavaApplicationStub
    export JAVA_ARCHIVE_CLASSES=YES
    export JAVA_ARCHIVE_TYPE=JAR
    export JAVA_COMPILER=/usr/bin/javac
    export JAVA_FRAMEWORK_RESOURCES_DIRS=Resources
    export JAVA_JAR_FLAGS=cv
    export JAVA_SOURCE_SUBDIR=.
    export JAVA_USE_DEPENDENCIES=YES
    export JAVA_ZIP_FLAGS=-urg
    export JIKES_DEFAULT_FLAGS="+E +OLDCSO"
    export KEEP_PRIVATE_EXTERNS=NO
    export LD_DEPENDENCY_INFO_FILE=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/Objects-normal/arm64/double-conversion_dependency_info.dat
    export LD_GENERATE_MAP_FILE=NO
    export LD_MAP_FILE_PATH=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/double-conversion-LinkMap-normal-arm64.txt
    export LD_NO_PIE=NO
    export LD_QUOTE_LINKER_ARGUMENTS_FOR_COMPILER_DRIVER=YES
    export LEGACY_DEVELOPER_DIR=/Applications/Xcode.app/Contents/PlugIns/Xcode3Core.ideplugin/Contents/SharedSupport/Developer
    export LEX=lex
    export LIBRARY_FLAG_NOSPACE=YES
    export LIBRARY_FLAG_PREFIX=-l
    export LIBRARY_KEXT_INSTALL_PATH=/Library/Extensions
    export LIBRARY_SEARCH_PATHS="/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos "
    export LINKER_DISPLAYS_MANGLED_NAMES=NO
    export LINK_FILE_LIST_normal_arm64=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/Objects-normal/arm64/double-conversion.LinkFileList
    export LINK_FILE_LIST_normal_armv7=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/Objects-normal/armv7/double-conversion.LinkFileList
    export LINK_WITH_STANDARD_LIBRARIES=YES
    export LOCALIZABLE_CONTENT_DIR=
    export LOCAL_ADMIN_APPS_DIR=/Applications/Utilities
    export LOCAL_APPS_DIR=/Applications
    export LOCAL_DEVELOPER_DIR=/Library/Developer
    export LOCAL_LIBRARY_DIR=/Library
    export LOCROOT=
    export LOCSYMROOT=
    export MACH_O_TYPE=staticlib
    export MAC_OS_X_PRODUCT_BUILD_VERSION=16F73
    export MAC_OS_X_VERSION_ACTUAL=101205
    export MAC_OS_X_VERSION_MAJOR=101200
    export MAC_OS_X_VERSION_MINOR=1205
    export METAL_LIBRARY_FILE_BASE=default
    export METAL_LIBRARY_OUTPUT_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos/
    export MODULE_CACHE_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/ModuleCache
    export MTL_ENABLE_DEBUG_INFO=NO
    export NATIVE_ARCH=armv7
    export NATIVE_ARCH_32_BIT=i386
    export NATIVE_ARCH_64_BIT=x86_64
    export NATIVE_ARCH_ACTUAL=x86_64
    export NO_COMMON=YES
    export OBJECT_FILE_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/Objects
    export OBJECT_FILE_DIR_normal=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/Objects-normal
    export OBJROOT=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates
    export ONLY_ACTIVE_ARCH=NO
    export OS=MACOS
    export OSAC=/usr/bin/osacompile
    export OTHER_LDFLAGS=-ObjC
    export PACKAGE_TYPE=com.apple.package-type.static-library
    export PASCAL_STRINGS=YES
    export PATH="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/bin:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/libexec:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/local/bin:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/usr/bin:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/usr/local/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/local/bin:/Applications/Xcode.app/Contents/Developer/Tools:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    export PATH_PREFIXES_EXCLUDED_FROM_HEADER_DEPENDENCIES="/usr/include /usr/local/include /System/Library/Frameworks /System/Library/PrivateFrameworks /Applications/Xcode.app/Contents/Developer/Headers /Applications/Xcode.app/Contents/Developer/SDKs /Applications/Xcode.app/Contents/Developer/Platforms"
    export PFE_FILE_C_DIALECTS=c++
    export PKGINFO_FILE_PATH=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/PkgInfo
    export PLATFORM_DEVELOPER_APPLICATIONS_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Applications
    export PLATFORM_DEVELOPER_BIN_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin
    export PLATFORM_DEVELOPER_LIBRARY_DIR=/Applications/Xcode.app/Contents/PlugIns/Xcode3Core.ideplugin/Contents/SharedSupport/Developer/Library
    export PLATFORM_DEVELOPER_SDK_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs
    export PLATFORM_DEVELOPER_TOOLS_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Tools
    export PLATFORM_DEVELOPER_USR_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr
    export PLATFORM_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform
    export PLATFORM_DISPLAY_NAME=iOS
    export PLATFORM_NAME=iphoneos
    export PLATFORM_PREFERRED_ARCH=arm64
    export PLATFORM_PRODUCT_BUILD_VERSION=14E8301
    export PLIST_FILE_OUTPUT_FORMAT=binary
    export PRECOMPS_INCLUDE_HEADERS_FROM_BUILT_PRODUCTS_DIR=YES
    export PRECOMP_DESTINATION_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/PrefixHeaders
    export PRESERVE_DEAD_CODE_INITS_AND_TERMS=NO
    export PRIVATE_HEADERS_FOLDER_PATH=/usr/local/include/double-conversion
    export PRODUCT_MODULE_NAME=double_conversion
    export PRODUCT_NAME=double-conversion
    export PRODUCT_SETTINGS_PATH=
    export PRODUCT_TYPE=com.apple.product-type.library.static
    export PROFILING_CODE=NO
    export PROJECT=React
    export PROJECT_DERIVED_FILE_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/DerivedSources
    export PROJECT_DIR=/Users/<user>/Documents/code/<project>/node_modules/react-native/React
    export PROJECT_FILE_PATH=/Users/<user>/Documents/code/<project>/node_modules/react-native/React/React.xcodeproj
    export PROJECT_NAME=React
    export PROJECT_TEMP_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build
    export PROJECT_TEMP_ROOT=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates
    export PUBLIC_HEADERS_FOLDER_PATH=/usr/local/include
    export RECURSIVE_SEARCH_PATHS_FOLLOW_SYMLINKS=YES
    export REMOVE_CVS_FROM_RESOURCES=YES
    export REMOVE_GIT_FROM_RESOURCES=YES
    export REMOVE_HEADERS_FROM_EMBEDDED_BUNDLES=YES
    export REMOVE_HG_FROM_RESOURCES=YES
    export REMOVE_SVN_FROM_RESOURCES=YES
    export REZ_COLLECTOR_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/ResourceManagerResources
    export REZ_EXECUTABLE=YES
    export REZ_OBJECTS_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/ResourceManagerResources/Objects
    export REZ_SEARCH_PATHS="/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos "
    export SCAN_ALL_SOURCE_FILES_FOR_INCLUDES=NO
    export SCRIPT_INPUT_FILE_COUNT=0
    export SCRIPT_OUTPUT_FILE_COUNT=0
    export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdk
    export SDK_DIR=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdk
    export SDK_DIR_iphoneos10_3=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdk
    export SDK_NAME=iphoneos10.3
    export SDK_NAMES=iphoneos10.3
    export SDK_PRODUCT_BUILD_VERSION=14E8301
    export SDK_VERSION=10.3
    export SDK_VERSION_ACTUAL=100300
    export SDK_VERSION_MAJOR=100000
    export SDK_VERSION_MINOR=300
    export SED=/usr/bin/sed
    export SEPARATE_STRIP=YES
    export SEPARATE_SYMBOL_EDIT=NO
    export SET_DIR_MODE_OWNER_GROUP=YES
    export SET_FILE_MODE_OWNER_GROUP=NO
    export SHALLOW_BUNDLE=NO
    export SHARED_DERIVED_FILE_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos/DerivedSources
    export SHARED_PRECOMPS_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/PrecompiledHeaders
    export SKIP_INSTALL=YES
    export SOURCE_ROOT=/Users/<user>/Documents/code/<project>/node_modules/react-native/React
    export SRCROOT=/Users/<user>/Documents/code/<project>/node_modules/react-native/React
    export STRINGS_FILE_OUTPUT_ENCODING=binary
    export STRIP_BITCODE_FROM_COPIED_FILES=YES
    export STRIP_INSTALLED_PRODUCT=YES
    export STRIP_STYLE=debugging
    export SUPPORTED_DEVICE_FAMILIES=1,2
    export SUPPORTED_PLATFORMS="iphonesimulator iphoneos"
    export SUPPORTS_TEXT_BASED_API=NO
    export SWIFT_PLATFORM_TARGET_PREFIX=ios
    export SYMROOT=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products
    export SYSTEM_ADMIN_APPS_DIR=/Applications/Utilities
    export SYSTEM_APPS_DIR=/Applications
    export SYSTEM_CORE_SERVICES_DIR=/System/Library/CoreServices
    export SYSTEM_DEMOS_DIR=/Applications/Extras
    export SYSTEM_DEVELOPER_APPS_DIR=/Applications/Xcode.app/Contents/Developer/Applications
    export SYSTEM_DEVELOPER_BIN_DIR=/Applications/Xcode.app/Contents/Developer/usr/bin
    export SYSTEM_DEVELOPER_DEMOS_DIR="/Applications/Xcode.app/Contents/Developer/Applications/Utilities/Built Examples"
    export SYSTEM_DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
    export SYSTEM_DEVELOPER_DOC_DIR="/Applications/Xcode.app/Contents/Developer/ADC Reference Library"
    export SYSTEM_DEVELOPER_GRAPHICS_TOOLS_DIR="/Applications/Xcode.app/Contents/Developer/Applications/Graphics Tools"
    export SYSTEM_DEVELOPER_JAVA_TOOLS_DIR="/Applications/Xcode.app/Contents/Developer/Applications/Java Tools"
    export SYSTEM_DEVELOPER_PERFORMANCE_TOOLS_DIR="/Applications/Xcode.app/Contents/Developer/Applications/Performance Tools"
    export SYSTEM_DEVELOPER_RELEASENOTES_DIR="/Applications/Xcode.app/Contents/Developer/ADC Reference Library/releasenotes"
    export SYSTEM_DEVELOPER_TOOLS=/Applications/Xcode.app/Contents/Developer/Tools
    export SYSTEM_DEVELOPER_TOOLS_DOC_DIR="/Applications/Xcode.app/Contents/Developer/ADC Reference Library/documentation/DeveloperTools"
    export SYSTEM_DEVELOPER_TOOLS_RELEASENOTES_DIR="/Applications/Xcode.app/Contents/Developer/ADC Reference Library/releasenotes/DeveloperTools"
    export SYSTEM_DEVELOPER_USR_DIR=/Applications/Xcode.app/Contents/Developer/usr
    export SYSTEM_DEVELOPER_UTILITIES_DIR=/Applications/Xcode.app/Contents/Developer/Applications/Utilities
    export SYSTEM_DOCUMENTATION_DIR=/Library/Documentation
    export SYSTEM_KEXT_INSTALL_PATH=/System/Library/Extensions
    export SYSTEM_LIBRARY_DIR=/System/Library
    export TAPI_VERIFY_MODE=ErrorsOnly
    export TARGETED_DEVICE_FAMILY=1
    export TARGETNAME=double-conversion
    export TARGET_BUILD_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Products/Release-iphoneos
    export TARGET_DEVICE_IDENTIFIER=a91508cf0a769cfc7e6ebb94ce9ced80a913c30b
    export TARGET_DEVICE_MODEL=iPhone8,1
    export TARGET_DEVICE_OS_VERSION=10.3.2
    export TARGET_NAME=double-conversion
    export TARGET_TEMP_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build
    export TEMP_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build
    export TEMP_FILES_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build
    export TEMP_FILE_DIR=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build
    export TEMP_ROOT=/Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates
    export TOOLCHAINS=com.apple.dt.toolchain.XcodeDefault
    export TOOLCHAIN_DIR=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
    export TREAT_MISSING_BASELINES_AS_TEST_FAILURES=NO
    export UID=501
    export UNSTRIPPED_PRODUCT=NO
    export USER=gary
    export USER_APPS_DIR=/Users/<user>/Applications
    export USER_LIBRARY_DIR=/Users/<user>/Library
    export USE_DYNAMIC_NO_PIC=YES
    export USE_HEADERMAP=YES
    export USE_HEADER_SYMLINKS=NO
    export VALIDATE_PRODUCT=YES
    export VALID_ARCHS="arm64 armv7 armv7s"
    export VERBOSE_PBXCP=NO
    export VERSION_INFO_BUILDER=gary
    export VERSION_INFO_FILE=double-conversion_vers.c
    export VERSION_INFO_STRING="\"@(#)PROGRAM:double-conversion  PROJECT:React-\""
    export WARNING_CFLAGS="-Wextra -Wall -Wno-semicolon-before-method-body"
    export WRAP_ASSET_PACKS_IN_SEPARATE_DIRECTORIES=NO
    export XCODE_APP_SUPPORT_DIR=/Applications/Xcode.app/Contents/Developer/Library/Xcode
    export XCODE_PRODUCT_BUILD_VERSION=8E3004b
    export XCODE_VERSION_ACTUAL=0833
    export XCODE_VERSION_MAJOR=0800
    export XCODE_VERSION_MINOR=0830
    export XPCSERVICES_FOLDER_PATH=/XPCServices
    export YACC=yacc
    export arch=arm64
    export variant=normal
    /bin/sh -c /Users/<user>/Library/Developer/Xcode/DerivedData/<project>-coouvzgirqlxsaeaczzuypknpazb/Build/Intermediates/React.build/Release-iphoneos/double-conversion.build/Script-190EE32F1E6A43DE00A8543A.sh

Unpacking /Users/<user>/.rncache/glog-0.3.4.tar.gz...
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
/Users/<user>/Documents/code/<project>/node_modules/react-native/third-party/glog-0.3.4/missing: Unknown `--is-lightweight' option
Try `/Users/<user>/Documents/code/<project>/node_modules/react-native/third-party/glog-0.3.4/missing --help' for more information
configure: WARNING: 'missing' script is too old or missing
checking for arm-apple-darwin-strip... no
checking for strip... strip
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for arm-apple-darwin-gcc... no
checking for gcc... gcc
checking whether the C compiler works... no
configure: error: in `/Users/<user>/Documents/code/<project>/node_modules/react-native/third-party/glog-0.3.4':
configure: error: C compiler cannot create executables
See `config.log' for more details
Command /bin/sh failed with exit code 77

[fungilation]

Nevermind on last comment. RN itself seems to be culprit and fix: https://github.com/facebook/react-native/issues/14382#issuecomment-313163119

[fungilation]

Why close? My original post stands. Crashing on device is a pretty big issue to fix (on RN 0.46)

[kristiandupont]

Ah my apologies, I was too quick there.

[fungilation]

Does anyone have the problem ?

Me naturally since I first posted this, on RN 0.46.1 (iOS). I haven't tested again since updating RN, now latest at 0.46.4.

This is a showstopper that needs some TLC.

[leoyb]

I've also got this same problem with Js debug mode on on both Android and iOS. Is this the version of react-native? @fungilation

[fungilation]

0.46.4 yes. RN = react native

[Kdoherty11]

Running into the same error with Realm 1.10.1 and React Native 0.47.1 but only when running in Release mode on an actual device

[Techwolf12]

Can you check this issue and see if it solves it? #1280

[jbcullis]

Same problem with both 47.2 and 48.2 on iOS only. On release versions, the app will randomly seem to exit on load but if you double click home button it's actually sitting in the background.

[jbcullis]

@Techwolf12 - That looks to be someone that hasn't linked the library, I have verified all setup is in place and as stated above, on launching the app (test flight) the app will randomly exit but if you double click home button you'll see the app sitting there in the background.

[fungilation]

That means app crashed, not going "into background".

[yaibait]

I got same problem when turn on debugger

[fee-studio]

@yaibait 我也是，这个有办法吗？

[michelalbers]

Please check out #1436 - maybe it solves your issue, too ;)

[scue]

@jbcullis I got the same problem, app will randomly exit, and crash log is:

RCTFatalException: Unhandled JS Exception: Missing Realm constructor. Did you run "react-native link realm"? Please see https://realm.io/docs/react-native/latest/#missing-realm-constructor for troubleshooting

I already read the realm docs many times, check all steps, and upgrade realm to "realm": "^2.0.4", it still crash randomly, my test step:

1. start app
2. double click home button, kill app
3. start app again

Crash rate: 6/70.

RN Version: "react-native": "0.49.3",

[jbcullis]

@scue - The way we fixed it was to set the realm const to null at load:
const Realm = null;
Then, after the app has fully loaded (we used the login function) call:
if (Realm === null) { Realm = require('realm'); };

It must be some sort of timing issue....because we found a solution that was satisfactory to our needs we didn't investigate any further.

[arshbot]

That solution doesn't work well for defining schemas by extending Realm.Object(). While evaluating, realm isn't loaded in and the constructor has not defined realm yet, so the value of realm is null. Do you have a solution for that?

[kdkaushikdalvi]

if (Realm === null) { Realm = require('realm'); };

Its worked for me.

[kneth]

I am closing the issue as it is about an old version of Realm JS. The issue seems to pop up regularly, but I think it is better to create a new issue for the particular Realm JS and/or React Native version.

[RealmBot]

➤ Unito Sync Bot commented:

Transition made by Unito