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feat: types for prerender options and result; better result checks #29

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Merged
rschristian merged 4 commits into from
Feb 6, 2026
Merged

feat: types for prerender options and result; better result checks #29

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40d3251
feat: types for prerender options and result; better result checks
crutch12 Dec 9, 2025
47c6205
chore: Revert unnecessary changes
rschristian Feb 6, 2026
4d9886f
fix: Correct & re-export types
rschristian Feb 6, 2026
2b4bc84
chore: Ensure TS LSP raises errors on `.d.ts` files
rschristian Feb 6, 2026
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13 changes: 8 additions & 5 deletions src/plugins/prerender-plugin.js
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Original file line number Diff line number Diff line change
Expand Up @@ -382,7 +382,7 @@ export function prerenderPlugin({ prerenderScript, renderTarget, additionalPrere
return message;
};

/** @type {import('./types.d.ts').Head} */
/** @type {Partial<import('./types.d.ts').Head>} */
let head = { lang: '', title: '', elements: new Set() };

let prerender;
Expand Down Expand Up @@ -420,9 +420,12 @@ export function prerenderPlugin({ prerenderScript, renderTarget, additionalPrere
} catch {}
}

/** @type {import('./types.d.ts').PrerenderResult | string} */
let result;
try {
result = await prerender({ ssr: true, url: route.url, route });
/** @type {import('./types.d.ts').PrerenderOptions} */
const options = { ssr: true, url: route.url, route };
result = await prerender(options);
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} catch (e) {
const message = await handlePrerenderError(e);
this.error(message);
Expand All @@ -438,7 +441,7 @@ export function prerenderPlugin({ prerenderScript, renderTarget, additionalPrere
head = { lang: '', title: '', elements: new Set() };

// Add any discovered links to the list of routes to pre-render:
if (result.links) {
if (typeof result === 'object' && result.links) {
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for (let url of result.links) {
const parsed = new URL(url, 'http://localhost');
url = parsed.pathname.replace(/\/$/, '') || '/';
Expand Down Expand Up @@ -494,9 +497,9 @@ export function prerenderPlugin({ prerenderScript, renderTarget, additionalPrere
const target = htmlDoc.querySelector(renderTarget);
if (!target)
this.error(
result.renderTarget == 'body'
renderTarget == 'body'
? '`renderTarget` was not specified in plugin options and <body> does not exist in input HTML template'
: `Unable to detect prerender renderTarget "${result.selector}" in input HTML template`,
: `Unable to detect prerender renderTarget "${renderTarget}" in input HTML template`,
Comment on lines -497 to +500
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@rschristian rschristian Dec 13, 2025

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Oof, good spot on both (or good spot from the types). Changed this API ages ago and I guess it slipped through.

);
target.insertAdjacentHTML('afterbegin', body);

Expand Down
16 changes: 16 additions & 0 deletions src/plugins/types.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -14,3 +14,19 @@ export interface PrerenderedRoute {
url: string;
_discoveredBy?: PrerenderedRoute;
}

export interface PrerenderOptions {
ssr: true;
url: string;
route: PrerenderedRoute;
}

export interface PrerenderResult {
html?: string;
head?: Partial<Head>;
links?: Set<string>;
/**
* @description Caution: should be a valid JSON object
*/
data?: any;
}
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