React Native 適配XCode11.3

在下面那個目錄，報錯__attribute__ 不識別

node_modules/react-native/React/Base/RCTModuleMethod.mm

只需要找到當前類實現文件，找到RCTParseUnused函數，做以下修改

static BOOL RCTParseUnused(const char **input) {
 return 
    RCTReadString(input, "__attribute__((unused))") || 
    RCTReadString(input, "__attribute__((__unused__))") ||
    RCTReadString(input, "__unused"); 
}

就可以了