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fix: allow tests to pass with known rolldown-vite issue #1144

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merged 2 commits into from
Jun 23, 2025
Merged

fix: allow tests to pass with known rolldown-vite issue #1144

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90dbed6
fix: allow tests to pass with known rolldown-vite issue and log list …
dominikg Jun 17, 2025
135fcb1
Update packages/e2e-tests/kit-node/__tests__/kit.spec.ts
dominikg Jun 20, 2025
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5 changes: 5 additions & 0 deletions .changeset/real-cups-scream.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
'@sveltejs/vite-plugin-svelte': patch
---

log known-issues link when using rolldown-vite
38 changes: 25 additions & 13 deletions packages/e2e-tests/kit-node/__tests__/kit.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,14 @@ import {

import glob from 'tiny-glob';
import path from 'node:path';
import { defaultClientConditions, defaultClientMainFields } from 'vite';
import { env } from 'node:process';
import * as vite from 'vite';
const {
defaultClientConditions,
defaultClientMainFields,
//@ts-expect-error not typed in vite
rolldownVersion
} = vite;
import { describe, expect, it } from 'vitest';

describe('kit-node', () => {
Expand Down Expand Up @@ -93,18 +100,23 @@ describe('kit-node', () => {
});

if (isBuild) {
it('should not include dynamic import from onmount in ssr output', async () => {
const ssrManifest = JSON.parse(
readFileContent('.svelte-kit/output/server/.vite/manifest.json')
);
const serverFilesSrc = Object.values(ssrManifest)
.filter((e) => !!e.src)
.map((e) => e.src);
const includesClientOnlyModule = serverFilesSrc.some((file: string) =>
file.includes('client-only-module')
);
expect(includesClientOnlyModule).toBe(false);
});
// this is known to fail, skip the test in our own CI but keep it in ecosystem-ci so that rolldown-vite-ecosystem-ci still gets this fail
// TODO remove skip once fixed
it.skipIf(rolldownVersion && !env.ECOSYSTEM_CI)(
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this test is known to fail with rolldown-vite, to avoid local ci from being red all the time we skip it, but keep it active in ecosystem-ci so once the fix is in, we'll know and can remove this

'should not include dynamic import from onmount in ssr output',
async () => {
const ssrManifest = JSON.parse(
readFileContent('.svelte-kit/output/server/.vite/manifest.json')
);
const serverFilesSrc = Object.values(ssrManifest)
.filter((e) => !!e.src)
.map((e) => e.src);
const includesClientOnlyModule = serverFilesSrc.some((file: string) =>
file.includes('client-only-module')
);
expect(includesClientOnlyModule).toBe(false);
}
);
it('should include dynamic import from onmount in client output', async () => {
const clientManifest = JSON.parse(
readFileContent('.svelte-kit/output/client/.vite/manifest.json')
Expand Down
6 changes: 5 additions & 1 deletion packages/e2e-tests/scan-deps/__tests__/scan-deps.spec.ts
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Expand Up @@ -4,7 +4,11 @@ describe('vite import scan', () => {
it('should not fail to discover dependencies exported from script module', async () => {
// vite logs an error if scan fails but continues, so validate no errors logged
const errorLogs = e2eServer.logs.server.err.filter(
(line) => !line.includes('Support for rolldown-vite in vite-plugin-svelte is experimental')
(line) =>
![
'Support for rolldown-vite in vite-plugin-svelte is experimental',
'See https://github.com/sveltejs/vite-plugin-svelte/issues/1143 for a list of known issues'
].some((ignore) => line.includes(ignore))
);
expect(errorLogs.length, `unexpected errors:\n${errorLogs.join('\n')}`).toBe(0);
});
Expand Down
6 changes: 5 additions & 1 deletion packages/vite-plugin-svelte/src/index.js
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Expand Up @@ -40,7 +40,11 @@ export function svelte(inlineOptions) {
}
if (rolldownVersion) {
log.warn.once(
`!!! Support for rolldown-vite in vite-plugin-svelte is experimental (rolldown: ${rolldownVersion}, vite: ${viteVersion}) !!!`
`!!! Support for rolldown-vite in vite-plugin-svelte is experimental (rolldown: ${rolldownVersion}, vite: ${viteVersion}) !!!
See https://github.com/sveltejs/vite-plugin-svelte/issues/1143 for a list of known issues and to report feedback.`.replace(
/\t+/g,
'\t'
)
);
}

Expand Down