[Metrics] How to fetch the download time for javascript？

[dolphinux]

#1173

I want to get the consume time for javascript download time，but I don't know how to got it？
@nicklockwood

[brentvatne]

@dolphinux - check out

react-native/React/Base/RCTBatchedBridge.m

Lines 268 to 273 in 60b5645

	RCTProfileBeginEvent();
	RCTPerformanceLoggerStart(RCTPLScriptDownload);
	RCTJavaScriptLoader *loader = [[RCTJavaScriptLoader alloc] initWithBridge:self];
	[loader loadBundleAtURL:bundleURL onComplete:^(NSError *error, NSString *script) {
	RCTPerformanceLoggerEnd(RCTPLScriptDownload);
	RCTProfileEndEvent(@"JavaScript dowload", @"init,download", @[]);

- notice that this is passed in to both RCTPerformanceLogger and RCTProfile - does that help?

[brentvatne]

Have a look at the Inspect Element tool, specifically in the Perf tab, that will have the data for you!