React Native v0.16 causes Transform error

[adriansdev]

Hi

I have just updated RN to v0.16 and see this error which I assume is due to the Babel updates in RN

TransformError: /Users/…/node_modules/alt/lib/index.js: [BABEL] /Users/…/node_modules/alt/lib/index.js: Unknown option: /Users/…/node_modules/alt/.babelrc.stage

Removing .babelrc seems to fix the problem

[cnjsstong]

+1

Same here. Removing .babelrc fixed the issue.

[sebmck]

.babelrc should be added to .npmignore if you're publishing the package prebuilt.

[taion]

Better to use package.files instead of .npmignore IMO. I noted this at #543 (comment).

[taion]

Although note we are ignoring .babelrc:

alt/.npmignore

Line 9 in 07d8902

.babelrc

[myusuf3]

so whats the work around for this?

[goatslacker]

I'll use package.json files and publish a new build.

[ljharb]

.babelrc should be added to .npmignore if you're publishing the package prebuilt.

@sebmck why, if i'm also including the original source in the distribution alongside the compilation output?

[rainer-liao]

Remove .babelrc haven't fix the problem

[athena0304]

so how to solve this problem?

[enix223]

Remove .babelrc did solve this issue.

[JonathanZWhite]

Seems like .babelrc in npm packages cause this issue and running npm run clean after install should do the trick. The npm script is below.

"clean": "find ./node_modules -name react-packager -prune -o -name '.babelrc' -print | xargs rm -f",
"postinstall": "npm run clean"

[ljharb]

imo this is a babel bug. Each module should be able to declare its own babel version and transformation settings, and include these with the published package.

[zsading]

Removing .babelrc works for me

[ellyliang]

Removing .babelrc works for me +1

[yreenchan]

Removing .babelrc doesn't works for me, what should I do to solve the problem?

[artokun]

If the .babelrc problem is persisting even though you create a new project run the following command provided by @JonathanZWhite

find ./node_modules -name react-packager -prune -o -name '.babelrc' -print | xargs rm -f

[StormFactory]

I had the same error after creating the default project using react-native init [project] using react-native v0.42.2.

Opening up the project in Visual Studio Code and renaming .babelrc fixed the problem so ignoring it would still work too.