Error Invalid regular expression: Metro Bundler process exited with code 1

Question

Every project was working fine untill this Err. I dont know this is due to node upgrade; I tried by downgrading node from latest to stable version but nothing work !! I run my react native project with yarn start

Err: error Invalid regular expression: /(.*\\__fixtures__\\.*|node_modules[\\\]react[\\\]dist[\\\].*|website\\node_modules\\.*|heapCapture\\bundle\.js|.*\\__tests__\\.*)$/: Unterminated character class. Run CLI with --verbose flag for more details.

Metro Bundler process exited with code 1
Set EXPO_DEBUG=true in your env to view the stack trace.

just delete the node modules folder of your app, then in the project directory run yarn install and the new node modules will be made , after that try to run 'yarn start' — Rizwan Atta, Dec 17 '19 at 10:24
tried this but not after downgrading node. let me do that again — Abdul Wahab, Dec 17 '19 at 10:25
now the directory is been updated to `node_modules -> metro -> src -> blacklist` — Agrit07, Dec 25 '20 at 07:39

score 2 · Answer 1 · answered Dec 17 '19 at 10:58

Go to node_modules -> metro-config -> src -> defaults -> blacklist.js

Find this array:

   var sharedBlacklist = [
  /node_modules[/\\]react[/\\]dist[/\\].*/,
  /website\/node_modules\/.*/,
  /heapCapture\/bundle\.js/,
  /.*\/__tests__\
  ];

And replace it with this

   var sharedBlacklist = [
  /node_modules[\/\\]react[\/\\]dist[\/\\].*/,
  /website\/node_modules\/.*/,
  /heapCapture\/bundle\.js/,
  /.*\/__tests__\
  ];

SilverTech · Answer 2 · 2020-07-05T13:55:05.403

1

Things seem to have changed since the previous answer which doesn't work. Open file PROJECT_NAME\node_modules\metro-config\src\defaults\blacklist.js and replace the current var sharedBlacklist to this:

var sharedBlacklist = [/node_modules[\/\\]react[\/\\]dist[\/\\].*/,/website\/node_modules\/.*/,/heapCapture\/bundle\.js/,/.*\/__tests__\/.*/];

edited Jul 05 '20 at 13:55

answered Jul 05 '20 at 12:09

SilverTech

399
4
11

Amranur Rahman · Answer 3 · 2021-05-25T19:52:15.297

go to this file node_modules > metro-config > src > defaults > blacklist.js

and find

var sharedBlacklist = [
  /node_modules[/\\]react[/\\]dist[/\\].*/,
  /website\/node_modules\/.*/,
  /heapCapture\/bundle\.js/,
  /.*\/__tests__\/.*/
];

And update with this

var sharedBlacklist = [
  /node_modules[\/\\]react[\/\\]dist[\/\\].*/,
  /website\/node_modules\/.*/,
  /heapCapture\/bundle\.js/,
  /.*\/__tests__\/.*/
];

Error Invalid regular expression: Metro Bundler process exited with code 1

3 Answers3