Build: Enhance windows support

[mrginglymus]

What I did

Type mapping stubs used in the build process were injecting file-system relative paths. This change ensures they are module relative paths by replacing path.sep with /

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

• stories
• unit tests
• integration tests
• end-to-end tests

Manual testing

This section is mandatory for all contributions. If you believe no manual test is necessary, please state so explicitly. Thanks!

Documentation

• Add or update documentation reflecting your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli-storybook/src/sandbox-templates.ts

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

🦋 Canary release

This PR does not have a canary release associated. You can request a canary release of this pull request by mentioning the @storybookjs/core team here.

core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook canary-release-pr.yml --field pr=<PR_NUMBER>

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initSize	131 MB	131 MB	0 B	1.07	0%
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buildSbAddonsSize	1.85 MB	1.85 MB	0 B	-0.58	0%
buildSbCommonSize	195 kB	195 kB	0 B	-	0%
buildSbManagerSize	1.87 MB	1.87 MB	0 B	1.11	0%
buildSbPreviewSize	0 B	0 B	0 B	-	-
buildStaticSize	0 B	0 B	0 B	-	-
buildPrebuildSize	3.91 MB	3.91 MB	0 B	0.99	0%
buildPreviewSize	3.28 MB	3.28 MB	0 B	1	0%
testBuildSize	0 B	0 B	0 B	-	-
testBuildSbAddonsSize	0 B	0 B	0 B	-	-
testBuildSbCommonSize	0 B	0 B	0 B	-	-
testBuildSbManagerSize	0 B	0 B	0 B	-	-
testBuildSbPreviewSize	0 B	0 B	0 B	-	-
testBuildStaticSize	0 B	0 B	0 B	-	-
testBuildPrebuildSize	0 B	0 B	0 B	-	-
testBuildPreviewSize	0 B	0 B	0 B	-	-

name	before	after	diff	z	%
createTime	7.4s	6.5s	-934ms	-0.96	-14.3%
generateTime	21.4s	19.5s	-1s -965ms	-1	-10.1%
initTime	14.8s	13.1s	-1s -740ms	-0.97	-13.3%
buildTime	11s	8.8s	-2s -169ms	-0.81	-24.5%
testBuildTime	0ms	0ms	0ms	-	-
devPreviewResponsive	4.6s	6s	1.3s	1.6	🔺21.9%
devManagerResponsive	3.5s	4.1s	614ms	1.1	14.8%
devManagerHeaderVisible	593ms	705ms	112ms	0.38	15.9%
devManagerIndexVisible	651ms	738ms	87ms	0.34	11.8%
devStoryVisibleUncached	1.9s	1.7s	-227ms	-0.42	-13.3%
devStoryVisible	652ms	739ms	87ms	0.31	11.8%
devAutodocsVisible	519ms	711ms	192ms	1.2	27%
devMDXVisible	549ms	585ms	36ms	0.01	6.2%
buildManagerHeaderVisible	584ms	768ms	184ms	2.64	🔺24%
buildManagerIndexVisible	676ms	875ms	199ms	3.39	🔺22.7%
buildStoryVisible	567ms	731ms	164ms	2.43	🔺22.4%
buildAutodocsVisible	458ms	477ms	19ms	-0.08	4%
buildMDXVisible	446ms	602ms	156ms	2.31	🔺25.9%

Greptile Summary

This PR modifies the type mapper file generation to ensure cross-platform compatibility by normalizing path separators in TypeScript declaration files, particularly important for Windows builds.

• Modified code/core/scripts/helpers/generateTypesMapperFiles.ts to replace system-specific path separators with forward slashes using replaceAll(sep, '/')
• Ensures consistent module paths across different operating systems in generated .d.ts files
• Improves build reliability on Windows systems by standardizing path formats

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[greptile-apps]

_{1 file(s) reviewed, 1 comment(s)
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[mrginglymus]

Sigh. This having worked, once, I'm now getting the exceedingly unhelpful error:

> npx nx run-many -t build --parallel=15

 NX   Failed to convert JavaScript value `Null` into rust type `String`


An error occurred while executing: `npx nx run-many -t build --parallel=15`
❌ Failed to bootstrap

Error running task compile for undefined:
{
  "shortMessage": "Command failed with exit code 1: npx nx run-many -t build --parallel=15",
  "command": "npx nx run-many -t build --parallel=15",
  "escapedCommand": "\"npx nx run-many -t build --parallel=15\"",
  "exitCode": 1,
  "failed": true,
  "timedOut": false,
  "isCanceled": false,
  "killed": false
}

---

edit: ah, good, a known nx issue: nrwl/nx#29429

Updating to 20.3 seemed to fix it