Flow: Flow can't seem to understand export * from file

[pizzarob]

Example:

c.js

export function someFunc(){}

a.js

export * from 'c.js'

b.js

// flow says someFunc is not exported from a
import { somFunc } from 'a'

[TrySound]

Did you tried this?

c.js

export function someFunc(){}

a.js

export * from './c.js'

b.js

// flow says someFunc is not exported from a
import { somFunc } from './a'

[pizzarob]

@TrySound to be more specific I am using yarn workspaces to include different packages across apps. This recently became an issue. I didn't used to see this error

packages/moduleA/someFile.js

export function someFunction() {}

packages/moduleA/index.js

export * from './someFile';

packages/moduleB/index.js

// Cannot import someFunction because there is no someFunction export in moduleA
import { someFunction } from 'moduleA'

[yannamsellem]

I think that @TrySound was trying to say is to use the keyword function between your export and the name of your function

[pizzarob]

@GhostxRipper - sorry that was a syntax error while typing my example of the issue.

[csantos42]

I'm getting this same error whenever using the export * from './file.js' syntax

[pizzarob]

@chrissantos1995 you need to make sure every file has the // @flow comment at the top

[arekzelechowski]

I lost some time today because of this. I was upgrading react-scripts regularly but I have forgotten about flow-bin. Make sure to update it to more recent version (not sure which one introduced support for this syntax).