●Change8

Migrating to SvelteKit @sveltejs/kit@3.0.0-next.10

Version @sveltejs/kit@3.0.0-next.10 introduces 1 breaking change. This guide details how to update your code.

Released: 7/18/2026

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Breaking Changes
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Migration Steps
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Affected Symbols

⚠️ Check Your Code

If you use any of these symbols, you need to read this guide:

defineEnvVarstransformIndexHtml

Breaking Changes

●Issue #1

The `defineEnvVars` function has been moved from the root of `@sveltejs/kit` to `@sveltejs/kit/env`. Update your imports accordingly.

Migration Steps

  1. 1
    Update imports from `import { defineEnvVars } from '@sveltejs/kit';` to `import { defineEnvVars } from '@sveltejs/kit/env';`.

Release Summary

This release moves `defineEnvVars` to a new location and includes fixes for redirect handling and plugin warnings. It also includes a performance improvement by skipping import graph collection in non-client environments.

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View the full release notes and all changes for SvelteKit @sveltejs/kit@3.0.0-next.10.

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