[breaking] rename invalid(...) and ValidationError

[Rich-Harris]

Migration

invalid(..) has been renamed to fail(..):

-import { invalid } from '@sveltejs/kit';
+import { fail } from '@sveltejs/kit';

export const actions = {
  default: () => {
    // ..
-    return invalid(400, { message: 'nope' });
+    return fail(400, { message: 'nope' });
  }
};

Similarly, the ValidationError has been renamed to ActionFailure:

+import type { ValidationError } from '@sveltejs/kit';
-import type { ActionFailure } from '@sveltejs/kit';

// ..

PR description

closes #7982

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[changeset-bot]

🦋 Changeset detected

Latest commit: 68781d9

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

This PR includes changesets to release 1 package

Name	Type
@sveltejs/kit	Patch

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[benaltair]

Small thing for those still migrating old projects, the diffs here are reversed:

+import type { ValidationError } from '@sveltejs/kit';
-import type { ActionFailure } from '@sveltejs/kit';

// ..

It should be instead:

-import type { ValidationError } from '@sveltejs/kit';
+import type { ActionFailure } from '@sveltejs/kit';

// ..