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fix: manipulate stack trace for errors that happen while generating prerender inputs #17113

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Merged
elliott-with-the-longest-name-on-github merged 2 commits into from
Sep 15, 2026
Merged

fix: manipulate stack trace for errors that happen while generating prerender inputs #17113

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b8d8570
fix: manipulate stack trace for errors that happen while generating p…
Rich-Harris Sep 15, 2026
418dd90
chore: autofix lint
github-actions[bot] Sep 15, 2026
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6 changes: 6 additions & 0 deletions .changeset/bumpy-houses-show.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
---
"@sveltejs/kit": patch
---

fix: manipulate stack trace for errors that happen while generating prerender inputs

13 changes: 12 additions & 1 deletion packages/kit/src/core/postbuild/prerender.js
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ import { createReadableStream } from '@sveltejs/kit/node';
import generate_fallback from './fallback.js';
import { stringify_remote_arg } from '../../runtime/shared.js';
import { matches_content_type } from '../../utils/http.js';
import { fix_stack_trace } from '../../runtime/server/sourcemaps.js';

export default forked(import.meta.url, prerender);

Expand Down Expand Up @@ -709,8 +710,18 @@ async function prerender({
}

for (const internals of prerender_functions) {
/** @type {any[]} */
let inputs;

try {
inputs = (await internals.inputs?.()) ?? [];
} catch (e) {
if (e instanceof Error) fix_stack_trace(e);
throw e;
}

if (internals.has_arg) {
for (const arg of (await internals.inputs?.()) ?? []) {
for (const arg of inputs) {
void enqueue(null, remote_prefix + internals.id + '/' + stringify_remote_arg(arg));
}
} else {
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