mirror of
https://github.com/status-im/react-native.git
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4a3857ef1d
Summary: public Benchmarking our startup path has shown we spend a lot of time decoding strings (iPhone 4S / iPhone 5): * reading a 2MB JS bundle: 35ms / 15ms * decoding is to an `NSString`: 186ms / 78ms * transforming that to a `JSString`: 29ms / 10ms Instead of going through an `NSString` transformation, we generate a null-terminated bundle (0.1ms / 0.05ms to copy the data) and use `JSStringCreateWithUTF8CString` (121ms / 53ms) to generate the string. That makes decoding 70% faster. Reviewed By: javache Differential Revision: D2541140 fb-gh-sync-id: 09a016b8edfd46a9b62682c76705564d2024e75e
46 lines
1.2 KiB
Objective-C
46 lines
1.2 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "RCTSourceCode.h"
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#import "RCTDefines.h"
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#import "RCTAssert.h"
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#import "RCTBridge.h"
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#import "RCTUtils.h"
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@implementation RCTSourceCode
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RCT_EXPORT_MODULE()
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@synthesize bridge = _bridge;
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#if !RCT_DEV
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- (void)setScriptText:(NSString *)scriptText {}
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#endif
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RCT_EXPORT_METHOD(getScriptText:(RCTResponseSenderBlock)successCallback
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failureCallback:(RCTResponseErrorBlock)failureCallback)
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{
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if (RCT_DEV && self.scriptData && self.scriptURL) {
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NSString *scriptText = [[NSString alloc] initWithData:self.scriptData encoding:NSUTF8StringEncoding];
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successCallback(@[@{@"text": scriptText, @"url": self.scriptURL.absoluteString}]);
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} else {
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failureCallback(RCTErrorWithMessage(@"Source code is not available"));
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}
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}
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- (NSDictionary *)constantsToExport
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{
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NSString *URL = self.bridge.bundleURL.absoluteString ?: @"";
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return @{@"scriptURL": URL};
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}
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@end
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