Fails to run with react-native project using babel 7

[xzilja]

I just got following error when I ran danger (this doesn't happen when I run commands like lint, jest or flow, so led me to think this is something danger specific?)

Error:  Error: Plugin 0 specified in "/bitrise/src/node_modules/babel-preset-react-native/index.js" provided an invalid property of "default" (While processing preset: "/bitrise/src/node_modules/babel-preset-react-native/index.js")
    at Plugin.init (/bitrise/src/node_modules/babel-core/lib/transformation/plugin.js:131:13)
    at Function.normalisePlugin (/bitrise/src/node_modules/babel-core/lib/transformation/file/options/option-manager.js:152:12)
    at /bitrise/src/node_modules/babel-core/lib/transformation/file/options/option-manager.js:184:30
    at Array.map (<anonymous>)
    at Function.normalisePlugins (/bitrise/src/node_modules/babel-core/lib/transformation/file/options/option-manager.js:158:20)
    at OptionManager.mergeOptions (/bitrise/src/node_modules/babel-core/lib/transformation/file/options/option-manager.js:234:36)
    at /bitrise/src/node_modules/babel-core/lib/transformation/file/options/option-manager.js:265:14
    at /bitrise/src/node_modules/babel-core/lib/transformation/file/options/option-manager.js:323:22
    at Array.map (<anonymous>)
    at OptionManager.resolvePresets (/bitrise/src/node_modules/babel-core/lib/transformation/file/options/option-manager.js:275:20)

Issue started appearing when I upgraded my react-native project to v0.56.0, with this an update to babel v7 happened as well as I now need to use latest version of babel-preset-react-native which I believe is referenced in the error.

Besides danger my project and other tooling that remotely relies on babel seem to be working fine.

[tjb295]

I am having the exact same problem since upgrading to 0.56.0. Cannot run a single new project.

[fbartho]

@iljadaderko @tjb295 -- The current babel-preset-react-native & babel7 changes cause TypeScript projects to explode (in my experience; we had to downgrade from 0.56.0 back to 0.55 when we exploded on several ways from Sunday).

The deal is that react-native now ships flow-types in-project (instead of stripping them), and babel7's basic structure explodes if both flow & typescript transformers are loaded at the same time.

[sebinsua]

This is the same issue I was looking into within this GitHub issue.

[xzilja]

@sebinsua whats the status there? I assume babel needs to be removed, but this can't be done due to tests?

[cwright017]

This is an issue because dangerjs is still using babel-7 alpha and the consuming project is using babel7 stable.

[orta]

Danger's deps only include babel-polyfill - do you have a sense about why it would be affecting a babel7 build?

[orta]

We're working with babel 7 - so this should be fixed