Description
Xcode shows multiple warnings when either RNTester/RNTester/xcodeproj or template/ios/HelloWorld.xcodeproj/ (scaffold for new apps) is built. These warnings have accumulated over the years (#19628), and it is one of the concerns with the most reactions in a recent survey of React Native users.
This issue will track all efforts to reduce the number of warnings in our Xcode projects.
If you send a pull request that removes a warning listed in this issue, please let us know so we can take a look at your proposed change.
RNTester
Targets
Xcode breaks down the warnings by target.
- double-conversion
- jsi
- third-party (folly, glog)
- cxxreact
- jsiexecutor
- React
- RCTNetwork
- RCTImage
- RNTester
Note that some of these warnings may originate in third party libraries. Further, these warnings may be resolved in newer versions of these libraries. As such, you may need to upgrade some of these libraries to resolve a warning. Careful testing will be needed in order to make sure no breaking changes are introduced as part of these upgrades.
Detailed list of warnings
As of this writing, Xcode 10.1 presents warnings on the following files when building RNTester:
Target: double-conversion
third-party/double-conversion-1.1.6/src/double-conversion.cc:825:10: Declaration shadows a local variable
Target: jsi
Semantic Issue Group
ReactCommon/jsi/JSCRuntime.cpp:575:22: Unused parameter 'ctx'
ReactCommon/jsi/JSCRuntime.cpp:612:22: Unused parameter 'ctx'
third-party/folly-2018.10.22.00/folly/Memory.h:51:30: Possible misuse of comma operator here
ReactCommon/jsi/JSIDynamic.cpp:6:10: In file included from ReactCommon/jsi/JSIDynamic.cpp:6:
ReactCommon/jsi/JSIDynamic.h:8:10: In file included from ReactCommon/jsi/JSIDynamic.h:8:
third-party/folly-2018.10.22.00/folly/dynamic.h:67:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic.h:67:
third-party/folly-2018.10.22.00/folly/container/F14Map.h:38:10: In file included from third-party/folly-2018.10.22.00/folly/container/F14Map.h:38:
third-party/folly-2018.10.22.00/folly/container/detail/F14Policy.h:23:10: In file included from third-party/folly-2018.10.22.00/folly/container/detail/F14Policy.h:23:
third-party/folly-2018.10.22.00/folly/Memory.h:51:21: Cast expression to void to silence warning
third-party/folly-2018.10.22.00/folly/Memory.h:51:50: Possible misuse of comma operator here
ReactCommon/jsi/JSIDynamic.cpp:6:10: In file included from ReactCommon/jsi/JSIDynamic.cpp:6:
ReactCommon/jsi/JSIDynamic.h:8:10: In file included from ReactCommon/jsi/JSIDynamic.h:8:
third-party/folly-2018.10.22.00/folly/dynamic.h:67:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic.h:67:
third-party/folly-2018.10.22.00/folly/container/F14Map.h:38:10: In file included from third-party/folly-2018.10.22.00/folly/container/F14Map.h:38:
third-party/folly-2018.10.22.00/folly/container/detail/F14Policy.h:23:10: In file included from third-party/folly-2018.10.22.00/folly/container/detail/F14Policy.h:23:
third-party/folly-2018.10.22.00/folly/Memory.h:51:40: Cast expression to void to silence warning
third-party/folly-2018.10.22.00/folly/FBString.h:1881:72: Possible misuse of comma operator here
ReactCommon/jsi/JSIDynamic.cpp:6:10: In file included from ReactCommon/jsi/JSIDynamic.cpp:6:
ReactCommon/jsi/JSIDynamic.h:8:10: In file included from ReactCommon/jsi/JSIDynamic.h:8:
third-party/folly-2018.10.22.00/folly/dynamic.h:717:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic.h:717:
third-party/folly-2018.10.22.00/folly/dynamic-inl.h:21:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic-inl.h:21:
third-party/folly-2018.10.22.00/folly/Conv.h:40:10: In file included from third-party/folly-2018.10.22.00/folly/Conv.h:40:
third-party/folly-2018.10.22.00/folly/Demangle.h:19:10: In file included from third-party/folly-2018.10.22.00/folly/Demangle.h:19:
third-party/folly-2018.10.22.00/folly/FBString.h:1880:15: Cast expression to void to silence warning
third-party/folly-2018.10.22.00/folly/Conv.h:1184:44: Possible misuse of comma operator here
ReactCommon/jsi/JSIDynamic.cpp:6:10: In file included from ReactCommon/jsi/JSIDynamic.cpp:6:
ReactCommon/jsi/JSIDynamic.h:8:10: In file included from ReactCommon/jsi/JSIDynamic.h:8:
third-party/folly-2018.10.22.00/folly/dynamic.h:717:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic.h:717:
third-party/folly-2018.10.22.00/folly/dynamic-inl.h:21:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic-inl.h:21:
third-party/folly-2018.10.22.00/folly/Conv.h:1184:29: Cast expression to void to silence warning
Value Conversion Issue Group
ReactCommon/jsi/JSCRuntime.cpp:821:63: Implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'unsigned int'
ReactCommon/jsi/JSCRuntime.cpp:831:52: Implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'unsigned int'
Target: folly
Semantic Issue Group
third-party/folly-2018.10.22.00/folly/detail/Demangle.cpp:33:23: Unused parameter 'mangled'
third-party/folly-2018.10.22.00/folly/detail/Demangle.cpp:34:18: Unused parameter 'cbref'
third-party/folly-2018.10.22.00/folly/detail/Demangle.cpp:35:17: Unused parameter 'opaque'
third-party/folly-2018.10.22.00/folly/FBString.h:1881:72: Possible misuse of comma operator here
third-party/folly-2018.10.22.00/folly/Demangle.cpp:17:10: In file included from third-party/folly-2018.10.22.00/folly/Demangle.cpp:17:
third-party/folly-2018.10.22.00/folly/Demangle.h:19:10: In file included from third-party/folly-2018.10.22.00/folly/Demangle.h:19:
third-party/folly-2018.10.22.00/folly/FBString.h:1880:15: Cast expression to void to silence warning
third-party/glog-0.3.5/src/utilities.cc:87:6: No previous prototype for function 'DebugWriteToString'
third-party/glog-0.3.5/src/stacktrace_x86_64-inl.h:51:66: Unused parameter 'uc'
third-party/glog-0.3.5/src/utilities.cc:351:11: In file included from third-party/glog-0.3.5/src/utilities.cc:351:
third-party/glog-0.3.5/src/stacktrace_x86_64-inl.h:51:76: Unused parameter 'opq'
third-party/glog-0.3.5/src/utilities.cc:351:11: In file included from third-party/glog-0.3.5/src/utilities.cc:351:
third-party/folly-2018.10.22.00/folly/Conv.h:1184:44: Possible misuse of comma operator here
third-party/folly-2018.10.22.00/folly/json_pointer.cpp:19:10: In file included from third-party/folly-2018.10.22.00/folly/json_pointer.cpp:19:
third-party/folly-2018.10.22.00/folly/String.h:27:10: In file included from third-party/folly-2018.10.22.00/folly/String.h:27:
third-party/folly-2018.10.22.00/folly/Conv.h:1184:29: Cast expression to void to silence warning
third-party/glog-0.3.5/src/vlog_is_on.cc:69:27: No previous prototype for function 'SafeFNMatch_'
third-party/glog-0.3.5/src/logging.cc:316:13: No previous prototype for function 'GetAnsiColorCode'
third-party/glog-0.3.5/src/logging.cc:1681:6: No previous prototype for function 'GetExitOnDFatal'
third-party/glog-0.3.5/src/logging.cc:1696:6: No previous prototype for function 'SetExitOnDFatal'
third-party/folly-2018.10.22.00/folly/Memory.h:51:30: Possible misuse of comma operator here
third-party/folly-2018.10.22.00/folly/dynamic.cpp:19:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic.cpp:19:
third-party/folly-2018.10.22.00/folly/dynamic.h:67:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic.h:67:
third-party/folly-2018.10.22.00/folly/container/F14Map.h:38:10: In file included from third-party/folly-2018.10.22.00/folly/container/F14Map.h:38:
third-party/folly-2018.10.22.00/folly/container/detail/F14Policy.h:23:10: In file included from third-party/folly-2018.10.22.00/folly/container/detail/F14Policy.h:23:
third-party/folly-2018.10.22.00/folly/Memory.h:51:21: Cast expression to void to silence warning
third-party/folly-2018.10.22.00/folly/Memory.h:51:50: Possible misuse of comma operator here
third-party/folly-2018.10.22.00/folly/dynamic.cpp:19:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic.cpp:19:
third-party/folly-2018.10.22.00/folly/dynamic.h:67:10: In file included from third-party/folly-2018.10.22.00/folly/dynamic.h:67:
third-party/folly-2018.10.22.00/folly/container/F14Map.h:38:10: In file included from third-party/folly-2018.10.22.00/folly/container/F14Map.h:38:
third-party/folly-2018.10.22.00/folly/container/detail/F14Policy.h:23:10: In file included from third-party/folly-2018.10.22.00/folly/container/detail/F14Policy.h:23:
third-party/folly-2018.10.22.00/folly/Memory.h:51:40: Cast expression to void to silence warning
third-party/folly-2018.10.22.00/folly/json.cpp:462:27: Possible misuse of comma operator here
third-party/folly-2018.10.22.00/folly/json.cpp:462:23: Cast expression to void to silence warning
third-party/folly-2018.10.22.00/folly/json.cpp:486:39: Possible misuse of comma operator here
third-party/folly-2018.10.22.00/folly/json.cpp:486:10: Cast expression to void to silence warning
third-party/glog-0.3.5/exported/glog/logging.h:719:32: Comparison of integers of different signs: 'const unsigned long' and 'const long'
third-party/folly-2018.10.22.00/folly/json.cpp:16:10: In file included from third-party/folly-2018.10.22.00/folly/json.cpp:16:
third-party/folly-2018.10.22.00/folly/json.h:47:10: In file included from third-party/folly-2018.10.22.00/folly/json.h:47:
third-party/folly-2018.10.22.00/folly/Range.h:47:10: In file included from third-party/folly-2018.10.22.00/folly/Range.h:47:
third-party/folly-2018.10.22.00/folly/detail/RangeCommon.h:22:10: In file included from third-party/folly-2018.10.22.00/folly/detail/RangeCommon.h:22:
third-party/glog-0.3.5/exported/glog/logging.h:706:32: Expanded from macro 'DEFINE_CHECK_OP_IMPL'
third-party/glog-0.3.5/exported/glog/logging.h:148:53: Expanded from macro 'GOOGLE_PREDICT_TRUE'
third-party/folly-2018.10.22.00/folly/json.cpp:715:7: In instantiation of function template specialization 'google::Check_LEImpl<unsigned long, long>' requested here
third-party/folly-2018.10.22.00/folly/json.cpp:831:5: In instantiation of function template specialization 'folly::json::escapeStringImpl<true>' requested here
Value Conversion Issue Group
third-party/glog-0.3.5/src/signalhandler.cc:95:50: Implicit conversion loses integer precision: 'long' to 'int'
third-party/glog-0.3.5/src/vlog_is_on.cc:52:1: Implicit conversion loses integer precision: 'long' to 'google::int32' (aka 'int')
third-party/glog-0.3.5/src/base/commandlineflags.h:116:22: Expanded from macro 'GLOG_DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:131:32: Expanded from macro 'EnvToInt'
third-party/glog-0.3.5/src/base/commandlineflags.h:86:53: Expanded from macro 'DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:71:44: Expanded from macro 'DEFINE_VARIABLE'
third-party/glog-0.3.5/src/vlog_is_on.cc:163:27: Implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'const int'
third-party/glog-0.3.5/src/logging.cc:139:1: Implicit conversion loses integer precision: 'long' to 'google::int32' (aka 'int')
third-party/glog-0.3.5/src/base/commandlineflags.h:116:22: Expanded from macro 'GLOG_DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:131:32: Expanded from macro 'EnvToInt'
third-party/glog-0.3.5/src/base/commandlineflags.h:86:53: Expanded from macro 'DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:71:44: Expanded from macro 'DEFINE_VARIABLE'
third-party/glog-0.3.5/src/logging.cc:141:1: Implicit conversion loses integer precision: 'long' to 'google::int32' (aka 'int')
third-party/glog-0.3.5/src/base/commandlineflags.h:116:22: Expanded from macro 'GLOG_DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:131:32: Expanded from macro 'EnvToInt'
third-party/glog-0.3.5/src/base/commandlineflags.h:86:53: Expanded from macro 'DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:71:44: Expanded from macro 'DEFINE_VARIABLE'
third-party/glog-0.3.5/src/logging.cc:145:1: Implicit conversion loses integer precision: 'long' to 'google::int32' (aka 'int')
third-party/glog-0.3.5/src/base/commandlineflags.h:116:22: Expanded from macro 'GLOG_DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:131:32: Expanded from macro 'EnvToInt'
third-party/glog-0.3.5/src/base/commandlineflags.h:86:53: Expanded from macro 'DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:71:44: Expanded from macro 'DEFINE_VARIABLE'
third-party/glog-0.3.5/src/logging.cc:147:1: Implicit conversion loses integer precision: 'long' to 'google::int32' (aka 'int')
third-party/glog-0.3.5/src/base/commandlineflags.h:116:22: Expanded from macro 'GLOG_DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:131:32: Expanded from macro 'EnvToInt'
third-party/glog-0.3.5/src/base/commandlineflags.h:86:53: Expanded from macro 'DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:71:44: Expanded from macro 'DEFINE_VARIABLE'
third-party/glog-0.3.5/src/logging.cc:168:1: Implicit conversion loses integer precision: 'long' to 'google::int32' (aka 'int')
third-party/glog-0.3.5/src/base/commandlineflags.h:116:22: Expanded from macro 'GLOG_DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:131:32: Expanded from macro 'EnvToInt'
third-party/glog-0.3.5/src/base/commandlineflags.h:86:53: Expanded from macro 'DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:71:44: Expanded from macro 'DEFINE_VARIABLE'
third-party/glog-0.3.5/src/logging.cc:176:1: Implicit conversion loses integer precision: 'long' to 'google::int32' (aka 'int')
third-party/glog-0.3.5/src/base/commandlineflags.h:116:22: Expanded from macro 'GLOG_DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:131:32: Expanded from macro 'EnvToInt'
third-party/glog-0.3.5/src/base/commandlineflags.h:86:53: Expanded from macro 'DEFINE_int32'
third-party/glog-0.3.5/src/base/commandlineflags.h:71:44: Expanded from macro 'DEFINE_VARIABLE'
third-party/glog-0.3.5/src/logging.cc:631:33: Implicit conversion loses integer precision: 'unsigned long' to 'int'
third-party/glog-0.3.5/src/logging.cc:764:65: Implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'int'
third-party/glog-0.3.5/src/logging.cc:789:33: Implicit conversion loses integer precision: 'unsigned long' to 'int'
third-party/glog-0.3.5/src/logging.cc:799:33: Implicit conversion loses integer precision: 'unsigned long' to 'int'
third-party/glog-0.3.5/src/logging.cc:1083:47: Implicit conversion loses integer precision: 'std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::size_type' (aka 'unsigned long') to 'const int'
third-party/glog-0.3.5/src/logging.cc:1344:19: Implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'const int'
third-party/glog-0.3.5/src/logging.cc:1416:40: Implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'const int'
third-party/glog-0.3.5/src/logging.cc:1517:67: Implicit conversion loses integer precision: 'unsigned long' to 'int'
third-party/glog-0.3.5/src/logging.cc:1530:67: Implicit conversion loses integer precision: 'unsigned long' to 'int'
third-party/glog-0.3.5/src/logging.cc:1897:21: Implicit conversion loses integer precision: 'ssize_t' (aka 'long') to 'int'
third-party/glog-0.3.5/src/logging.cc:1898:16: Implicit conversion loses integer precision: 'ssize_t' (aka 'long') to 'int'
third-party/glog-0.3.5/src/demangle.cc:343:18: Implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'int'
Documentation Issue Group
third-party/boost_1_63_0/boost/range/iterator_range_core.hpp:867:20: Parameter 'Range' not found in the function declaration
third-party/folly-2018.10.22.00/folly/json.cpp:23:10: In file included from third-party/folly-2018.10.22.00/folly/json.cpp:23:
third-party/boost_1_63_0/boost/algorithm/string.hpp:19:10: In file included from third-party/boost_1_63_0/boost/algorithm/string.hpp:19:
third-party/boost_1_63_0/boost/algorithm/string/trim.hpp:19:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/trim.hpp:19:
third-party/boost_1_63_0/boost/range/as_literal.hpp:22:10: In file included from third-party/boost_1_63_0/boost/range/as_literal.hpp:22:
third-party/boost_1_63_0/boost/range/iterator_range.hpp:13:10: In file included from third-party/boost_1_63_0/boost/range/iterator_range.hpp:13:
third-party/boost_1_63_0/boost/range/iterator_range_core.hpp:867:20: Did you mean 'r'?
third-party/boost_1_63_0/boost/algorithm/string/finder.hpp:46:20: Parameter 'Comp' not found in the function declaration
third-party/folly-2018.10.22.00/folly/json.cpp:23:10: In file included from third-party/folly-2018.10.22.00/folly/json.cpp:23:
third-party/boost_1_63_0/boost/algorithm/string.hpp:21:10: In file included from third-party/boost_1_63_0/boost/algorithm/string.hpp:21:
third-party/boost_1_63_0/boost/algorithm/string/predicate.hpp:23:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/predicate.hpp:23:
third-party/boost_1_63_0/boost/algorithm/string/find.hpp:22:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/find.hpp:22:
third-party/boost_1_63_0/boost/algorithm/string/finder.hpp:87:20: Parameter 'Comp' not found in the function declaration
third-party/folly-2018.10.22.00/folly/json.cpp:23:10: In file included from third-party/folly-2018.10.22.00/folly/json.cpp:23:
third-party/boost_1_63_0/boost/algorithm/string.hpp:21:10: In file included from third-party/boost_1_63_0/boost/algorithm/string.hpp:21:
third-party/boost_1_63_0/boost/algorithm/string/predicate.hpp:23:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/predicate.hpp:23:
third-party/boost_1_63_0/boost/algorithm/string/find.hpp:22:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/find.hpp:22:
third-party/boost_1_63_0/boost/algorithm/string/finder.hpp:127:20: Parameter 'Comp' not found in the function declaration
third-party/folly-2018.10.22.00/folly/json.cpp:23:10: In file included from third-party/folly-2018.10.22.00/folly/json.cpp:23:
third-party/boost_1_63_0/boost/algorithm/string.hpp:21:10: In file included from third-party/boost_1_63_0/boost/algorithm/string.hpp:21:
third-party/boost_1_63_0/boost/algorithm/string/predicate.hpp:23:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/predicate.hpp:23:
third-party/boost_1_63_0/boost/algorithm/string/find.hpp:22:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/find.hpp:22:
third-party/boost_1_63_0/boost/algorithm/string/finder.hpp:233:20: Parameter 'Range' not found in the function declaration
third-party/folly-2018.10.22.00/folly/json.cpp:23:10: In file included from third-party/folly-2018.10.22.00/folly/json.cpp:23:
third-party/boost_1_63_0/boost/algorithm/string.hpp:21:10: In file included from third-party/boost_1_63_0/boost/algorithm/string.hpp:21:
third-party/boost_1_63_0/boost/algorithm/string/predicate.hpp:23:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/predicate.hpp:23:
third-party/boost_1_63_0/boost/algorithm/string/find.hpp:22:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/find.hpp:22:
third-party/boost_1_63_0/boost/algorithm/string/formatter.hpp:79:20: Parameter 'Input' not found in the function declaration
third-party/folly-2018.10.22.00/folly/json.cpp:23:10: In file included from third-party/folly-2018.10.22.00/folly/json.cpp:23:
third-party/boost_1_63_0/boost/algorithm/string.hpp:25:10: In file included from third-party/boost_1_63_0/boost/algorithm/string.hpp:25:
third-party/boost_1_63_0/boost/algorithm/string/replace.hpp:24:10: In file included from third-party/boost_1_63_0/boost/algorithm/string/replace.hpp:24:
Target: cxxreact
ReactCommon/cxxreact/JSExecutor.h:107:41: Unused parameter 'pressureLevel'
ReactCommon/cxxreact/CxxNativeModule.cpp:7:10: In file included from ReactCommon/cxxreact/CxxNativeModule.cpp:7:
ReactCommon/cxxreact/Instance.h:11:10: In file included from ReactCommon/cxxreact/Instance.h:11:
ReactCommon/cxxreact/NativeToJsBridge.h:13:10: In file included from ReactCommon/cxxreact/NativeToJsBridge.h:13:
ReactCommon/cxxreact/SystraceSection.h:42:36: Unused parameter 'name'
ReactCommon/cxxreact/CxxNativeModule.cpp:14:10: In file included from ReactCommon/cxxreact/CxxNativeModule.cpp:14:
ReactCommon/cxxreact/SystraceSection.h:42:69: Unused parameter 'args'
ReactCommon/cxxreact/CxxNativeModule.cpp:14:10: In file included from ReactCommon/cxxreact/CxxNativeModule.cpp:14:
ReactCommon/cxxreact/NativeToJsBridge.cpp:42:19: Unused parameter 'executor'
ReactCommon/cxxreact/NativeToJsBridge.cpp:67:19: Unused parameter 'executor'
ReactCommon/cxxreact/SampleCxxModule.cpp:148:43: Unused parameter 'args'
Value Conversion Issue Group
ReactCommon/cxxreact/MethodCall.cpp:56:39: Implicit conversion loses integer precision: 'int64_t' (aka 'long long') to 'int'
ReactCommon/cxxreact/SampleCxxModule.cpp:97:29: Implicit conversion loses integer precision: 'int64_t' (aka 'long long') to 'int'
ReactCommon/cxxreact/SampleCxxModule.cpp:103:29: Implicit conversion loses integer precision: 'int64_t' (aka 'long long') to 'int'
Target: jsiexecutor
Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/cxxreact/JSExecutor.h:107:41: Unused parameter 'pressureLevel'
ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp:6:10: In file included from ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp:6:
Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/jsireact/JSIExecutor.h:8:10: In file included from Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/jsireact/JSIExecutor.h:8:
Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/jsireact/JSINativeModules.h:11:10: In file included from Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/jsireact/JSINativeModules.h:11:
Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/cxxreact/ModuleRegistry.h:12:10: In file included from Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/cxxreact/ModuleRegistry.h:12:
Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/cxxreact/SystraceSection.h:42:36: Unused parameter 'name'
ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp:11:10: In file included from ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp:11:
Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/cxxreact/SystraceSection.h:42:69: Unused parameter 'args'
ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp:11:10: In file included from ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp:11:
ReactCommon/jsiexecutor/jsireact/JSIExecutor.cpp:172:26: Unused parameter 'rt'
</details>
<details>
<summary>
Target: React
</summary>
Dead store Group
React/Base/RCTModuleMethod.mm:553:3: Value stored to 'index' is never read
Value Conversion Issue Group
React/Profiler/RCTProfile.m:83:34: Implicit conversion loses integer precision: 'NSUInteger' (aka 'unsigned long') to 'int'
React/Profiler/RCTProfile.m:85:36: Implicit conversion loses integer precision: 'NSUInteger' (aka 'unsigned long') to 'int'
React/Inspector/RCTInspector.mm:83:49: Implicit conversion loses integer precision: 'NSInteger' (aka 'long') to 'int'
React/Views/RCTWKWebView.m:265:23: Implicit conversion from enumeration type 'enum WKNavigationResponsePolicy' to different enumeration type 'WKNavigationActionPolicy' (aka 'enum WKNavigationActionPolicy')
React/Views/RCTWKWebView.m:284:19: Implicit conversion from enumeration type 'enum WKNavigationResponsePolicy' to different enumeration type 'WKNavigationActionPolicy' (aka 'enum WKNavigationActionPolicy')
Deprecations Group
React/Modules/RCTStatusBarManager.m:111:29: 'setStatusBarStyle:animated:' is deprecated: first deprecated in iOS 9.0 - Use -[UIViewController preferredStatusBarStyle]
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIApplication.h:460:1: 'setStatusBarStyle:animated:' has been explicitly marked deprecated here
React/Modules/RCTStatusBarManager.m:123:29: 'setStatusBarHidden:withAnimation:' is deprecated: first deprecated in iOS 9.0 - Use -[UIViewController prefersStatusBarHidden]
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIApplication.h:464:1: 'setStatusBarHidden:withAnimation:' has been explicitly marked deprecated here
React/Base/RCTConvert.m:92:20: 'stringByAddingPercentEscapesUsingEncoding:' is deprecated: first deprecated in iOS 9.0 - Use -stringByAddingPercentEncodingWithAllowedCharacters: instead, which always uses the recommended UTF-8 encoding, and which encodes for a specific URL component or subcomponent since each URL component or subcomponent has different rules for what characters are valid.
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURL.h:592:1: 'stringByAddingPercentEscapesUsingEncoding:' has been explicitly marked deprecated here
React/DevSupport/RCTInspectorDevServerHelper.mm:36:66: 'stringByAddingPercentEscapesUsingEncoding:' is deprecated: first deprecated in iOS 9.0 - Use -stringByAddingPercentEncodingWithAllowedCharacters: instead, which always uses the recommended UTF-8 encoding, and which encodes for a specific URL component or subcomponent since each URL component or subcomponent has different rules for what characters are valid.
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURL.h:592:1: 'stringByAddingPercentEscapesUsingEncoding:' has been explicitly marked deprecated here
React/DevSupport/RCTInspectorDevServerHelper.mm:37:72: 'stringByAddingPercentEscapesUsingEncoding:' is deprecated: first deprecated in iOS 9.0 - Use -stringByAddingPercentEncodingWithAllowedCharacters: instead, which always uses the recommended UTF-8 encoding, and which encodes for a specific URL component or subcomponent since each URL component or subcomponent has different rules for what characters are valid.
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURL.h:592:1: 'stringByAddingPercentEscapesUsingEncoding:' has been explicitly marked deprecated here
React/DevSupport/RCTInspectorDevServerHelper.mm:47:66: 'stringByAddingPercentEscapesUsingEncoding:' is deprecated: first deprecated in iOS 9.0 - Use -stringByAddingPercentEncodingWithAllowedCharacters: instead, which always uses the recommended UTF-8 encoding, and which encodes for a specific URL component or subcomponent since each URL component or subcomponent has different rules for what characters are valid.
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURL.h:592:1: 'stringByAddingPercentEscapesUsingEncoding:' has been explicitly marked deprecated here
React/DevSupport/RCTInspectorDevServerHelper.mm:48:72: 'stringByAddingPercentEscapesUsingEncoding:' is deprecated: first deprecated in iOS 9.0 - Use -stringByAddingPercentEncodingWithAllowedCharacters: instead, which always uses the recommended UTF-8 encoding, and which encodes for a specific URL component or subcomponent since each URL component or subcomponent has different rules for what characters are valid.
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURL.h:592:1: 'stringByAddingPercentEscapesUsingEncoding:' has been explicitly marked deprecated here
React/Views/RCTWebView.m:250:18: 'stringByReplacingPercentEscapesUsingEncoding:' is deprecated: first deprecated in iOS 9.0 - Use -stringByRemovingPercentEncoding instead, which always uses the recommended UTF-8 encoding.
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURL.h:593:1: 'stringByReplacingPercentEscapesUsingEncoding:' has been explicitly marked deprecated here
React/Views/RCTWKWebView.m:83:21: 'mediaPlaybackRequiresUserAction' is deprecated: first deprecated in iOS 9.0
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:203:28: 'mediaPlaybackRequiresUserAction' has been explicitly marked deprecated here
React/Base/RCTBundleURLProvider.m:74:35: 'sendSynchronousRequest:returningResponse:error:' is deprecated: first deprecated in iOS 9.0 - Use [NSURLSession dataTaskWithRequest:completionHandler:] (see NSURLSession.h
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLConnection.h:401:1: 'sendSynchronousRequest:returningResponse:error:' has been explicitly marked deprecated here
React/Modules/RCTRedBox.m:455:40: 'sendDeviceEventWithName:body:' is deprecated: Subclass RCTEventEmitter instead
React/Base/RCTEventDispatcher.h:82:1: 'sendDeviceEventWithName:body:' has been explicitly marked deprecated here
Nullability Issue Group
React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.h:17:16: Pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified)
React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.mm:8:9: In file included from React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.mm:8:
React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.h:17:16: Insert '_Nullable' if the pointer may be null
React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.h:17:16: Insert '_Nonnull' if the pointer should never be null
Semantic Issue Group
React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.mm:229:31: Unused parameter 'surface'
React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.mm:236:31: Unused parameter 'surface'
React/Base/Surface/SurfaceHostingView/RCTSurfaceHostingView.mm:236:70: Unused parameter 'intrinsicSize'
React/DevSupport/RCTDevMenu.m:220:102: Unused parameter 'action'
React/DevSupport/RCTDevMenu.m:254:104: Unused parameter 'action'
React/Views/RCTWKWebViewManager.m:64:1: Unused parameter 'defaultView'
React/Views/RCTViewManager.h:83:84: Expanded from macro 'RCT_CUSTOM_VIEW_PROPERTY'
React/Views/RCTWKWebViewManager.m:68:1: Unused parameter 'defaultView'
React/Views/RCTViewManager.h:83:84: Expanded from macro 'RCT_CUSTOM_VIEW_PROPERTY'
React/Views/RCTWKWebViewManager.m:72:1: Unused parameter 'defaultView'
React/Views/RCTViewManager.h:83:84: Expanded from macro 'RCT_CUSTOM_VIEW_PROPERTY'
React/Views/RCTWKWebViewManager.m:138:43: Unused parameter 'webView'
React/DevSupport/RCTInspectorDevServerHelper.mm:94:25: Unused parameter 'data'
React/DevSupport/RCTInspectorDevServerHelper.mm:95:32: Unused parameter 'response'
React/Base/Surface/RCTSurface.mm:185:70: Unused parameter 'notification'
React/Base/Surface/RCTSurface.mm:508:45: Unused parameter 'rootShadowView'
React/Base/Surface/RCTSurface.mm:513:69: Unused parameter 'rootShadowView'
React/Base/Surface/RCTSurface.mm:520:69: Unused parameter 'rootShadowView'
React/Base/Surface/RCTSurface.mm:534:35: Unused parameter 'manager'
React/Base/Surface/RCTSurface.mm:550:53: Unused parameter 'manager'
React/Base/Surface/RCTSurface.mm:31:17: Method override for the designated initializer of the superclass '-init' not found
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/usr/include/objc/NSObject.h:63:1: Method marked as designated initializer of the class here
React/Views/SafeAreaView/RCTSafeAreaShadowView.m:36:29: Unused parameter 'value'
React/Views/SafeAreaView/RCTSafeAreaShadowView.m:37:33: Unused parameter 'value'
React/Views/SafeAreaView/RCTSafeAreaShadowView.m:38:34: Unused parameter 'value'
React/Views/SafeAreaView/RCTSafeAreaShadowView.m:39:32: Unused parameter 'value'
React/Views/SafeAreaView/RCTSafeAreaShadowView.m:40:35: Unused parameter 'value'
React/Views/RCTFont.mm:55:27: Comparison of integers of different signs: 'NSInteger' (aka 'long') and 'NSUInteger' (aka 'unsigned long')
React/Views/ScrollView/RCTScrollView.m:1117:44: 'UIScrollViewContentInsetAdjustmentBehavior' is only available on iOS 11.0 or newer
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:35:28: 'UIScrollViewContentInsetAdjustmentBehavior' has been explicitly marked partial here
React/Views/ScrollView/RCTScrollView.m:1117:1: Annotate 'setContentInsetAdjustmentBehavior:' with an availability attribute to silence this warning
React/Views/ScrollView/RCTScrollView.m:757:23: Comparison of integers of different signs: 'int' and 'NSUInteger' (aka 'unsigned long')
React/Views/ScrollView/RCTScrollView.m:1022:43: Unused parameter 'uiManager'
React/Views/ScrollView/RCTScrollView.m:1022:90: Unused parameter 'viewRegistry'
React/Views/ScrollView/RCTScrollView.m:1039:39: Unused parameter 'uiManager'
React/Views/ScrollView/RCTScrollView.m:1039:86: Unused parameter 'viewRegistry'
React/Views/ScrollView/RCTScrollViewManager.m:38:20: 'UIScrollViewContentInsetAdjustmentBehavior' is only available on iOS 11.0 or newer
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:35:28: 'UIScrollViewContentInsetAdjustmentBehavior' has been explicitly marked partial here
React/Views/ScrollView/RCTScrollViewManager.m:38:1: Annotate 'UIScrollViewContentInsetAdjustmentBehavior:' with an availability attribute to silence this warning
React/Views/ScrollView/RCTScrollViewManager.m:39:19: 'UIScrollViewContentInsetAdjustmentAutomatic' is only available on iOS 11.0 or newer
React/Base/RCTConvert.h:231:15: Expanded from macro 'RCT_ENUM_CONVERTER'
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:35:28: 'UIScrollViewContentInsetAdjustmentBehavior' has been explicitly marked partial here
React/Views/ScrollView/RCTScrollViewManager.m:39:19: Enclose 'UIScrollViewContentInsetAdjustmentAutomatic' in an @available check to silence this warning
React/Views/ScrollView/RCTScrollViewManager.m:40:24: 'UIScrollViewContentInsetAdjustmentScrollableAxes' is only available on iOS 11.0 or newer
React/Base/RCTConvert.h:231:15: Expanded from macro 'RCT_ENUM_CONVERTER'
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:35:28: 'UIScrollViewContentInsetAdjustmentBehavior' has been explicitly marked partial here
React/Views/ScrollView/RCTScrollViewManager.m:40:24: Enclose 'UIScrollViewContentInsetAdjustmentScrollableAxes' in an @available check to silence this warning
React/Views/ScrollView/RCTScrollViewManager.m:41:15: 'UIScrollViewContentInsetAdjustmentNever' is only available on iOS 11.0 or newer
React/Base/RCTConvert.h:231:15: Expanded from macro 'RCT_ENUM_CONVERTER'
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:35:28: 'UIScrollViewContentInsetAdjustmentBehavior' has been explicitly marked partial here
React/Views/ScrollView/RCTScrollViewManager.m:41:15: Enclose 'UIScrollViewContentInsetAdjustmentNever' in an @available check to silence this warning
React/Views/ScrollView/RCTScrollViewManager.m:42:16: 'UIScrollViewContentInsetAdjustmentAlways' is only available on iOS 11.0 or newer
React/Base/RCTConvert.h:231:15: Expanded from macro 'RCT_ENUM_CONVERTER'
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:35:28: 'UIScrollViewContentInsetAdjustmentBehavior' has been explicitly marked partial here
React/Views/ScrollView/RCTScrollViewManager.m:42:16: Enclose 'UIScrollViewContentInsetAdjustmentAlways' in an @available check to silence this warning
React/Views/ScrollView/RCTScrollViewManager.m:43:5: 'UIScrollViewContentInsetAdjustmentNever' is only available on iOS 11.0 or newer
React/Base/RCTConvert.h:233:65: Expanded from macro 'RCT_ENUM_CONVERTER'
React/Base/RCTConvert.h:219:31: Expanded from macro '_RCT_CAST'
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:35:28: 'UIScrollViewContentInsetAdjustmentBehavior' has been explicitly marked partial here
React/Views/ScrollView/RCTScrollViewManager.m:43:5: Enclose 'UIScrollViewContentInsetAdjustmentNever' in an @available check to silence this warning
React/Modules/RCTRedBoxExtraDataViewController.m:184:39: Unused parameter 'tableView'
React/Modules/RCTRedBoxExtraDataViewController.m:189:37: Unused parameter 'tableView'
React/Modules/RCTRedBoxExtraDataViewController.m:189:83: Unused parameter 'section'
React/Modules/RCTRedBoxExtraDataViewController.m:194:38: Unused parameter 'tableView'
React/Modules/RCTRedBoxExtraDataViewController.m:240:57: Unused parameter 'tableView'
React/DevSupport/RCTPackagerConnection.mm:74:44: Unused parameter 'note'
React/DevSupport/RCTPackagerConnection.mm:201:66: Unused parameter 'webSocket'
React/DevSupport/RCTPackagerConnection.mm:262:67: Unused parameter 'webSocket'
React/Views/RCTWebView.m:55:60: 'UIScrollViewContentInsetAdjustmentNever' is only available on iOS 11.0 or newer
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:35:28: 'UIScrollViewContentInsetAdjustmentBehavior' has been explicitly marked partial here
React/Views/RCTWebView.m:55:60: Enclose 'UIScrollViewContentInsetAdjustmentNever' in an @available check to silence this warning
React/Views/RCTWebView.m:55:27: 'setContentInsetAdjustmentBehavior:' is only available on iOS 11.0 or newer
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:68:65: 'setContentInsetAdjustmentBehavior:' has been explicitly marked partial here
React/Views/RCTWebView.m:55:27: Enclose 'setContentInsetAdjustmentBehavior:' in an @available check to silence this warning
React/Views/RCTWKWebView.m:95:60: 'UIScrollViewContentInsetAdjustmentNever' is only available on iOS 11.0 or newer
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:35:28: 'UIScrollViewContentInsetAdjustmentBehavior' has been explicitly marked partial here
React/Views/RCTWKWebView.m:95:60: Enclose 'UIScrollViewContentInsetAdjustmentNever' in an @available check to silence this warning
React/Views/RCTWKWebView.m:95:27: 'setContentInsetAdjustmentBehavior:' is only available on iOS 11.0 or newer
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIScrollView.h:68:65: 'setContentInsetAdjustmentBehavior:' has been explicitly marked partial here
React/Views/RCTWKWebView.m:95:27: Enclose 'setContentInsetAdjustmentBehavior:' in an @available check to silence this warning
React/Views/RCTWKWebView.m:122:58: Unused parameter 'userContentController'
React/Views/RCTWKWebView.m:235:48: Unused parameter 'webView'
React/Views/RCTWKWebView.m:291:45: Unused parameter 'webView'
React/Views/RCTWKWebView.m:292:48: Unused parameter 'navigation'
React/Views/RCTWKWebView.m:321:50: Unused parameter 'webView'
React/Views/RCTWKWebView.m:351:36: Unused parameter 'webView'
React/Views/RCTWKWebView.m:352:39: Unused parameter 'navigation'
React/Views/RCTMaskedView.m:27:33: Unused parameter 'layer'
React/Views/RCTPicker.m:72:39: Unused parameter 'pickerView'
React/Views/RCTPicker.m:72:83: Unused parameter 'component'
React/Inspector/RCTInspectorPackagerConnection.m:198:37: Unused parameter 'webSocket'
React/Inspector/RCTInspectorPackagerConnection.m:210:37: Unused parameter 'webSocket'
React/Inspector/RCTInspectorPackagerConnection.m:231:37: Unused parameter 'webSocket'
React/Inspector/RCTInspectorPackagerConnection.m:231:75: Unused parameter 'code'
React/Inspector/RCTInspectorPackagerConnection.m:232:76: Unused parameter 'reason'
React/Inspector/RCTInspectorPackagerConnection.m:233:70: Unused parameter 'wasClean'
React/Views/SafeAreaView/RCTSafeAreaView.m:42:17: 'safeAreaInsets' is only available on iOS 11.0 or newer
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:264:45: 'safeAreaInsets' has been explicitly marked partial here
React/Views/SafeAreaView/RCTSafeAreaView.m:42:17: Enclose 'safeAreaInsets' in an @available check to silence this warning
React/Modules/RCTUIManager.m:1182:36: Unused parameter 'uiManager'
React/Modules/RCTUIManager.m:1207:36: Unused parameter 'uiManager'
third-party/folly-2018.10.22.00/folly/Memory.h:51:30: Possible misuse of comma operator here
third-party/folly-2018.10.22.00/folly/Memory.h:51:50: Possible misuse of comma operator here
third-party/folly-2018.10.22.00/folly/FBString.h:1881:72: Possible misuse of comma operator here
third-party/folly-2018.10.22.00/folly/Conv.h:1184:44: Possible misuse of comma operator here
Library/Developer/Xcode/DerivedData/RNTester-enfkflduwtadcufqojtousdlheev/Build/Products/Debug-iphonesimulator/include/cxxreact/JSExecutor.h:107:41: Unused parameter 'pressureLevel'
React/CxxBridge/RCTObjcExecutor.mm:100:32: Unused parameter 'bundleId'
React/CxxBridge/RCTObjcExecutor.mm:100:61: Unused parameter 'bundlePath'
ReactCommon/cxxreact/JSExecutor.h:107:41: Unused parameter 'pressureLevel'
React/CxxModule/DispatchMessageQueueThread.h:31:47: Unused parameter 'func'
React/CxxModule/RCTCxxUtils.mm:16:9: In file included from React/CxxModule/RCTCxxUtils.mm:16:
React/CxxBridge/RCTCxxBridge.mm:86:12: Moving a local object in a return statement prevents copy elision
React/CxxBridge/RCTCxxBridge.mm:86:12: Remove std::move call here
React/CxxBridge/RCTCxxBridge.mm:98:41: Unused parameter 'jsQueue'
React/CxxBridge/RCTCxxBridge.mm:122:113: Unused parameter 'tag'
Unused Entity Issue Group
React/Views/RCTTabBarItem.m:59:1: Ivar '_testID' which backs the property is not referenced in this property's accessor
React/Views/RCTTabBarItem.h:29:41: Property declared here
React/CxxModule/RCTNativeModule.mm:65:93: Lambda capture 'callId' is not used
React/CxxBridge/RCTCxxBridge.mm:1366:1: Ivar '_runtime' which backs the property is not referenced in this property's accessor
React/Base/RCTBridge+Private.h:152:29: Property declared here
</details>
<details>
<summary>
Target: RCTNetwork
</summary>
API Misuse (Apple) Group
Libraries/Network/RCTNetInfo.m:66:60: Dictionary value cannot be nil
</details>
<details>
<summary>
Target: RCTImage
</summary>
Core Foundation/Objective-C Group
Libraries/Image/RCTImageCache.m:41:3: Instance variable used while 'self' is not set to the result of '[(super or self) init...]'
</details>
# Extra Credit
Help track our progress and prevent regressions by logging the number of warnings produced by our Xcode projects. An increase in the number of warnings on a clean project should be considered a regression in CI. You may consider adding a build script that [outputs the warnings to a file](https://stackoverflow.com/questions/20047112/export-all-warnings-in-file-in-xcode), and use our existing dangerbot infrastructure to flag PRs that regress. See [React's sizebot for an example](https://github.com/facebook/react/blob/master/dangerfile.js).