Watchman causes errors when using with react-native

[yndc]

Hello!

I don't know if this belongs in relay or react-native repository, but here goes.
I'm on Windows 10 64-bit, my project setup are currently a fresh installation of Create React Native Application with react-relay.

Relay compiler requires watchman to be available on PATH windows environment, so I put the watchman.exe in my C:\windows\ and got the compiler running smoothly after doing this.

But react-native packager broke down if there is watchman.exe, here's the error log in the packager :

***ERROR STARTING PACKAGER***

jest-haste-map: @providesModule naming collision:
  Duplicate module name: isPromise
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/isPromise.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/isPromise.js

This warning is caused by a @providesModule declaration with the same name across two different files.
jest-haste-map: @providesModule naming collision:
  Duplicate module name: recycleNodesInto
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/recycleNodesInto.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/recycleNodesInto.js

This warning is caused by a @providesModule declaration with the same name across two different files.
***ERROR STARTING PACKAGER***

jest-haste-map: @providesModule naming collision:
  Duplicate module name: RelayError
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/RelayError.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/RelayError.js

This warning is caused by a @providesModule declaration with the same name across two different files.
jest-haste-map: @providesModule naming collision:
  Duplicate module name: RelayDefaultHandleKey
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/RelayDefaultHandleKey.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/RelayDefaultHandleKey.js

This warning is caused by a @providesModule declaration with the same name across two different files.
jest-haste-map: @providesModule naming collision:
  Duplicate module name: isCompatibleRelayFragmentType
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/isCompatibleRelayFragmentType.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/isCompatibleRelayFragmentType.js

This warning is caused by a @providesModule declaration with the same name across two different files.
***ERROR STARTING PACKAGER***

jest-haste-map: @providesModule naming collision:
  Duplicate module name: getRelayHandleKey
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/getRelayHandleKey.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/getRelayHandleKey.js

This warning is caused by a @providesModule declaration with the same name across two different files.
jest-haste-map: @providesModule naming collision:
  Duplicate module name: formatStorageKey
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/formatStorageKey.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/formatStorageKey.js

This warning is caused by a @providesModule declaration with the same name across two different files.
jest-haste-map: @providesModule naming collision:
  Duplicate module name: isScalarAndEqual
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/isScalarAndEqual.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/isScalarAndEqual.js

This warning is caused by a @providesModule declaration with the same name across two different files.
jest-haste-map: @providesModule naming collision:
  Duplicate module name: deepFreeze
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/deepFreeze.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/deepFreeze.js

This warning is caused by a @providesModule declaration with the same name across two different files.
***ERROR STARTING PACKAGER***

jest-haste-map: @providesModule naming collision:
  Duplicate module name: dedent
  Paths: C:/xampp/www/mis-client-mobile\node_modules/relay-compiler/lib/dedent.js collides with C:/xampp/www/mis-client-mobile\node_modules/relay-runtime/lib/dedent.js

This warning is caused by a @providesModule declaration with the same name across two different files.
***ERROR STARTING PACKAGER***

jest-haste-map: @providesModule naming collision:
  Duplicate module name: StaticContainer.react
  Paths: C:/xampp/www/mis-client-mobile\node_modules/react-static-container/lib/StaticContainer.react.js collides with C:/xampp/www/mis-client-mobile\node_modules/react-native/Libraries/Components/StaticContainer.react.js

This warning is caused by a @providesModule declaration with the same name across two different files.
***ERROR STARTING PACKAGER***

jest-haste-map: @providesModule naming collision:
  Duplicate module name: EventSubscription
  Paths: C:/xampp/www/mis-client-mobile\node_modules/fbemitter/lib/EventSubscription.js collides with C:/xampp/www/mis-client-mobile\node_modules/react-native/Libraries/EventEmitter/EventSubscription.js

This warning is caused by a @providesModule declaration with the same name across two different files.
***ERROR STARTING PACKAGER***

jest-haste-map: @providesModule naming collision:
  Duplicate module name: EmitterSubscription
  Paths: C:/xampp/www/mis-client-mobile\node_modules/fbemitter/lib/EmitterSubscription.js collides with C:/xampp/www/mis-client-mobile\node_modules/react-native/Libraries/EventEmitter/EmitterSubscription.js

This warning is caused by a @providesModule declaration with the same name across two different files.
***ERROR STARTING PACKAGER***

jest-haste-map: @providesModule naming collision:
  Duplicate module name: EventSubscriptionVendor
  Paths: C:/xampp/www/mis-client-mobile\node_modules/fbemitter/lib/EventSubscriptionVendor.js collides with C:/xampp/www/mis-client-mobile\node_modules/react-native/Libraries/EventEmitter/EventSubscriptionVendor.js

This warning is caused by a @providesModule declaration with the same name across two different files.
Packager started!

Resulting the packager unable to build and bundle the JS files.

This react-native packager error is solved by deleting the watchman.exe in C:\\windows\ and running
npm start -- --clear-cache
to start the packager.

But then when I need to compile the GraphQL, I have to put the watchman.exe back and this loop continues.

So yeah actually I got this working but I believe this is not the intended behaviour. Is there any mistake in my environment or installation procedure?

Thanks.

[Igor-Senshov]

Hi,

Same problem with watchman on Windows 10, although I encounter them in jest. As I get it the problem comes from slashes. @FURIBAITO check this facebook/watchman#479, maybe it will help.

[leebyron]

In the meantime, you can pass --watchman=false to disable it