RNFS.downloadFile Broken

[alessandro-bottamedi]

When I try to download a file here its the result:

Platform: iOS
Package Version: 2.21.0-alpha.2

Exception '+[RCTCxxConvert JS_NativeReactNativeFs_NativeDownloadFileOptions:]: unrecognized selector sent to class 0x10562b6b8' was thrown while invoking downloadFile on target ReactNativeFs with params (
        {
        background = 0;
        backgroundTimeout = 3600000;
        cacheable = 0;
        connectionTimeout = 5000;
        discretionary = 0;
        fromUrl = "XXXXX";
        hasBeginCallback = 0;
        hasProgressCallback = 0;
        hasResumableCallback = 0;
        headers =         {
        };
        jobId = 1;
        progressDivider = 0;
        progressInterval = 0;
        readTimeout = 15000;
        toFile = "XXXXX";
    },
    2982,
    2983
)
callstack: (
	0   CoreFoundation                      0x0000000180437330 __exceptionPreprocess + 172
	1   libobjc.A.dylib                     0x0000000180051274 objc_exception_throw + 56
	2   CoreFoundation                      0x0000000180445d3c __CFExceptionProem + 0
	3   CoreFoundation                      0x000000018043b224 ___forwarding___ + 1308
	4   CoreFoundation                      0x000000018043d50c _CF_forwarding_prep_0 + 92
	5   MowiBike                            0x00000001048c5684 __41-[RCTModuleMethod processMethodSignature]_block_invoke.83 + 140
	6   MowiBike                            0x00000001048c57f8 __41-[RCTModuleMethod processMethodSignature]_block_invoke.96 + 120
	7   MowiBike                            0x00000001048c68f0 -[RCTModuleMethod invokeWithBridge:module:arguments:] + 1460
	8   MowiBike                            0x00000001048ca9a8 _ZN8facebook5reactL11invokeInnerEP9RCTBridgeP13RCTModuleDatajRKN5folly7dynamicEiN12_GLOBAL__N_117SchedulingContextE + 1688
	9   MowiBike                            0x00000001048ca144 _ZZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEiENK3$_0clEv + 128
	10  MowiBike                            0x00000001048ca0b8 ___ZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEi_block_invoke + 28
	11  libdispatch.dylib                   0x0000000180132ee4 _dispatch_call_block_and_release + 24
	12  libdispatch.dylib                   0x0000000180134708 _dispatch_client_callout + 16
	13  libdispatch.dylib                   0x000000018013c77c _dispatch_lane_serial_drain + 776
	14  libdispatch.dylib                   0x000000018013d3dc _dispatch_lane_invoke + 392
	15  libdispatch.dylib                   0x0000000180149608 _dispatch_workloop_worker_thread + 768
	16  libsystem_pthread.dylib             0x00000001b1834878 _pthread_wqthread + 284
	17  libsystem_pthread.dylib             0x00000001b183363c start_wqthread + 8
)

RCTFatal
facebook::react::invokeInner(RCTBridge*, RCTModuleData*, unsigned int, folly::dynamic const&, int, (anonymous namespace)::SchedulingContext)
facebook::react::RCTNativeModule::invoke(unsigned int, folly::dynamic&&, int)::$_0::operator()() const
invocation function for block in facebook::react::RCTNativeModule::invoke(unsigned int, folly::dynamic&&, int)
_dispatch_call_block_and_release
_dispatch_client_callout
_dispatch_lane_serial_drain
_dispatch_lane_invoke
_dispatch_workloop_worker_thread
_pthread_wqthread
start_wqthread

[birdofpreyru]

Yeah... as I wrote, it will take a bunch more work, to ensure every function is correctly re-wired; and my current plan is to go over all regular filesystem access functions first, and keep the download / upload functionality to the last. You may check Releases Page regarding the list of functions currently verified to work, as of alpha.2 these are just these: copyFileAssets(), exists(), existsAssets(), mkdir(), readDirAssets(), readFile(), readFileAssets().

[birdofpreyru]

also unlink(), writeFile().

[birdofpreyru]

Presumably, downloadFile() works in v2.21.0-alpha.4. Though, I have tested its basic functionality only, thus no guarantees that all its options work correctly, neither that other related functions for download management work.