Cannot find module 'core-js/modules/es.array.find'

[minhtranite]

I run command npx react-codemod rename-unsafe-lifecycles src and got this error:

Error: Cannot find module 'core-js/modules/es.array.find'
Require stack:
- /Users/minhtran/.npm/_npx/24243/lib/node_modules/react-codemod/transforms/rename-unsafe-lifecycles.js
- /Users/minhtran/.npm/_npx/24243/lib/node_modules/react-codemod/node_modules/jscodeshift/src/Worker.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:794:15)
    at Function.Module._load (internal/modules/cjs/loader.js:687:27)
    at Module.require (internal/modules/cjs/loader.js:849:19)
    at require (internal/modules/cjs/helpers.js:74:18)
    at Object.<anonymous> (/Users/minhtran/.npm/_npx/24243/lib/node_modules/react-codemod/transforms/rename-unsafe-lifecycles.js:10:1)
    at Module._compile (internal/modules/cjs/loader.js:956:30)
    at Module._compile (/Users/minhtran/.npm/_npx/24243/lib/node_modules/react-codemod/node_modules/pirates/lib/index.js:99:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:973:10)
    at Object.newLoader [as .js] (/Users/minhtran/.npm/_npx/24243/lib/node_modules/react-codemod/node_modules/pirates/lib/index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:812:32) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/Users/minhtran/.npm/_npx/24243/lib/node_modules/react-codemod/transforms/rename-unsafe-lifecycles.js',
    '/Users/minhtran/.npm/_npx/24243/lib/node_modules/react-codemod/node_modules/jscodeshift/src/Worker.js'
  ]
}

It run on node v12.12.0 and npm v6.12.1

[threepointone]

I'm unable to reproduce this on my machine with the same node/npm version. Could you help by isolating this to a single file/code pattern that this fails on?

[minhtranite]

Hi!, The error happen when run command above in a project use babel with core-js@3.

Please download this project, run npm install and run npx react-codemod rename-unsafe-lifecycles .

test.zip

[threepointone]

Nice catch! I can reproduce it now.

The workaround (for now) is to run react-codemod from outside the project folder. So instead of

cd my-project
npx react-codemod rename-unsafe-lifecycles

You can run

npx react-codemod rename-unsafe-lifecycles my-project 

This will ensure that react-codemod will use its own dependency versions, and run the transforms as expected.

I'll make a proper fix for this later, and will leave this issue open until then. Thanks again!

[jasontk19]

This same underlying issue, which appears to be running react-codemod inside a project dir with a different babel config/dependencies than react-codemod expects, also gave me some trouble. In my case, I ran into the following error when running npx react-codemod sort-comp . --dry --print:

Transformation error (regeneratorRuntime is not defined)
ReferenceError: regeneratorRuntime is not defined

This seems like something that people might regularly run into. Would it be worth updating the readme to instruct people to run react-codemod from outside their project dir in all cases until this can be fixed?

[anilanar]

Google brought me here and @jasontk19's answer helped.

TL;DR: Run npx react-codemod outside your project's directory.

If you don't, react-codemod uses dependencies inside your node_modules which most likely won't work.

If where you run react-codemod is not a git repository, you need to run npx react-codemod --force.

@dartess Thanks for the tip.

[dartess]

TL;DR: Run npx react-codemod outside your project's directory.

If the parent directory is not a git repository, you will need to add the flag --force to run react-codemod