error Invalid regular expression: /(.*\\__fixtures__\\.*|node_modules[\\\]react[\\\]dist[\\\].*|website\\node_modules\\.*|heapCapture\\bundle\.js|.*\\__tests__\\.*)$/: Unterminated character class.
I don't have metro-config in my project, now what? I have found that in pretty older project there is no metro-config in node_modules. If it is the case with you, then, Go to node_modules/metro-bundler/src/blacklist.js And do the same step as mentioned in other answers, i.e. Replace var sharedBlacklist = [ /node_modules[/\\]react[/\\]dist[/\\].*/, /website\/node_modules\/.*/, /heapCapture\/bundle\.js/, /.*\/__tests__\/.*/ ]; with var sharedBlacklist = [ /node_modules[\/\\]react[\/\\]dist[\/\\].*/, /website\/node_modules\/.*/, /heapCapture\/bundle\.js/, /.*\/__tests__\/.*/ ]; P.S. I faced the same situation in a couple of projects so thought sharing it might help someone. Edit As per comment by @beltrone the file might also exist in, node_modules\metro\src\blacklist.js