Why this example load 'react-native-sqlite-storage' when build?

[fuhaixiao]

typeorm-browser-example@0.0.1 build /Users/BMM/Workspace/browser-example
webpack

Hash: 4c1cfdf3da11a46bcb03
Version: webpack 4.16.2
Time: 4299ms
Built at: 2018/07/25 上午2:09:31
Asset Size Chunks Chunk Names
main.js 2.44 MiB main [emitted] main
main.js.map 2.49 MiB main [emitted] main
Entrypoint main = main.js main.js.map
[./node_modules/webpack/buildin/global.js] (webpack)/buildin/global.js 489 bytes {main} [built]
[./src/entity/Author.ts] 1.58 KiB {main} [built]
[./src/entity/Category.ts] 1.23 KiB {main} [built]
[./src/entity/Post.ts] 1.87 KiB {main} [built]
[./src/index.ts] 4.15 KiB {main} [built]
+ 240 hidden modules

WARNING in ./node_modules/typeorm/browser/driver/react-native/ReactNativeDriver.js
Module not found: Error: Can't resolve 'react-native-sqlite-storage' in '/Users/BMM/Workspace/browser-example/node_modules/typeorm/browser/driver/react-native'
@ ./node_modules/typeorm/browser/driver/react-native/ReactNativeDriver.js
@ ./node_modules/typeorm/browser/driver/DriverFactory.js
@ ./node_modules/typeorm/browser/connection/Connection.js
@ ./node_modules/typeorm/browser/index.js
@ ./src/index.ts

[cdbattags]

I'm still having the same issue