[svelte-triage-bot]

• Relative '.' was normalized against process.cwd(), so syncs initiated outside the app rewrote the source side of rootDirs to the wrong directory.
• The $app/tsconfig overhaul in breaking: overhaul tsconfig #16458 preserved generated-type mapping but replaced the prior absolute-root-derived value with '.'; fix: write the generated tsconfig to node_modules/$app/tsconfig.json #16589 established the current parent-config location.
• Pass the authoritative Vite/project root through existing normalization, restoring the former invariant; changing normalize_config semantics was rejected because it would affect unrelated normalized fields and callers.
• Cover default and custom output directories; the shared writer fixes CLI sync, Vite dev/config loading, and build type generation across calling working directories.

Fixes #17241

Install the latest version of @sveltejs/kit from 55586b6:

pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/55586b621ba8bddc23bbef5566b9e188ef16f0ac

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/kit/pr/17242

Note

This PR is from a fork. A maintainer must approve approve each commit before it can be built and installed.

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Latest commit: 55586b6

The changes in this PR will be included in the next version bump.

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@sveltejs/kit	Patch

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