Unable to resolve module util

[shangxinbo]

I run it in react-native project. maybe markdown is used for node ,and can't used by webpack.I know util is a module of node. error like this

The development server returned response error code: 500

URL: http://10.111.23.190:19001/node_modules/react-native-scripts/build/bin/crna-entry.bundle?platform=android&dev=true&strict=false&minify=false&hot=true&assetPlugin=expo/tools/hashAssetFiles

Body:
{"from":"D:\github\treering-mobile\node_modules\markdown\lib\markdown.js","to":"util","message":"Unable to resolve module util from D:\\github\\treering-mobile\\node_modules\\markdown\\lib\\markdown.js: Module does not exist in the module map\n\nThis might be related to https://github.com/facebook/react-native/issues/4968\nTo resolve try the following:\n 1. Clear watchman watches: watchman watch-del-all.\n 2. Delete the node_modules folder: rm -rf node_modules && npm install.\n 3. Reset packager cache: rm -fr $TMPDIR/react-* or npm start -- --reset-cache.","name":"UnableToResolveError","type":"UnableToResolveError","errors":[{}]}
processBundleResult
BundleDownloader.java:172
access$100
BundleDownloader.java:38
execute
BundleDownloader.java:108
emitChunk
MultipartStreamReader.java:69
readAllParts
MultipartStreamReader.java:116
onResponse
BundleDownloader.java:96
execute
RealCall.java:126
run
NamedRunnable.java:32
runWorker
ThreadPoolExecutor.java:1112
run
ThreadPoolExecutor.java:587
run
Thread.java:841

[satotake]

@shangxinbo
I had the same issue in my react-native project.
This is a just workaround but it works for my case.

npm install util

ref: facebook/react-native#526

[rfdc]

npm install util - solved the first problem but know it shows -> "Can't find variable buffer" :(

[tlofano]

@rfdc I've the same issue, "Can't find variable buffer".
Can you find any solution?

[rfdc]

@tlofano I kind of quit and doing something else atm until it is fixed - which is pretty annoying.
But I have opened an Issue Case and the plugin contributors posted some work around but not a solution
aws-amplify/amplify-js#840
Hope that helps, let me know how you go on my link pls
Cheers
Raf