RN问题集

1.Error log：

E:\project\my\scanner-qrcode-master\node_modules\metro-config\src\defaults\blacklist.js:38
  return new RegExp(
         ^

SyntaxError: Invalid regular expression: /(.*\\__fixtures__\\.*|node_modules[\\\]react[\\\]dist[\\\].*|website\\node_modules\\.*|heapCapture\\bundle\.js|.*\\__tests__\\.*)$/: Unterminated character class
    at new RegExp (<anonymous>)
    at blacklist (E:\project\my\react-native-scanner-qrcode-master\node_modules\metro-config\src\defaults\blacklist.js:38:10)
    at getBlacklistRE (E:\project\my\react-native-scanner-qrcode-master\node_modules\react-native\local-cli\util\Config.js:58:10)
    at Object.<anonymous> (E:\project\my\react-native-scanner-qrcode-master\node_modules\react-native\local-cli\util\Config.js:73:20)
    at Module._compile (internal/modules/cjs/loader.js:956:30)
    at Module._compile (E:\project\my\react-native-scanner-qrcode-master\node_modules\pirates\lib\index.js:99:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:973:10)
    at Object.newLoader [as .js] (E:\project\my\react-native-scanner-qrcode-master\node_modules\pirates\lib\index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:812:32)
    at Function.Module._load (internal/modules/cjs/loader.js:724:14)

解决方法：

进入node_modules\metro-config\src\defaults 编辑 blacklist.js

/node_modules[/\\]react[/\\]dist[/\\].*/ 修改为 /node_modules[\/\\]react[\/\\]dist[\/\\].*/