context.parameters.fileName is different in static build

Describe the bug When using context the parameters.fileName is the actual path (e.g. /folder/Button-story.js) in development but will switch to a number (e.g. 1021) in static production build.

To Reproduce Steps to reproduce the behavior: Output context in production build.

Expected behavior context should be the same in development and production

Code snippets

export const withNotes = makeDecorator({
  wrapper: (context) => {
    console.log(context.parameters.fileName);
});

System:

• Version: 5.1.8

[tim-mukhin]

@gavmck @imdongchen @Utzel-Butzel @shilman I found the workaround here https://github.com/storybookjs/storybook/issues/5907#issuecomment-470015950 Thought it should be already fixed, but as I’ve mentioned, it’s still an issue in 6.1.

I guess if a project wants to use it’s own webpack config, it will most likely turn on optimization and get caught on this bug. I suppose it would be helpful to point this out in the documentation.

[OutThisLife]

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