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feat: better behavior for 'undefined' return values from 'serialize… (#3723)

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* feat: better behavior with 'undefined' return values after 'serialize' func

* build: changeset added
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Oleksii Tymoshenko 2022-06-27 21:02:00 +03:00 committed by GitHub
parent 0ae1365533
commit 52f75369ef
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3 changed files with 19 additions and 3 deletions
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5
.changeset/tidy-dots-own.md Normal file
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@ -0,0 +1,5 @@
---
'@astrojs/sitemap': patch
---
fix: if `serialize` function returns `undefined` for the passed entry, such entry will be excluded from sitemap

7
packages/integrations/sitemap/README.md
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@ -222,7 +222,9 @@ The `LinkItem` type has two required fields: `url` (the fully-qualified URL for
The `serialize` function should return `SitemapItem`, touched or not.
The example below shows the ability to add the sitemap specific properties individually.
To exclude the passed entry from sitemap it should return `undefined`.
The example below shows the ability to exclude certain entries and add the sitemap specific properties individually.
__astro.config.mjs__
@ -234,6 +236,9 @@ export default {
integrations: [
sitemap({
serialize(item) {
if (/exclude-from-sitemap/.test(item.url)) {
return undefined;
}
if (/your-special-page/.test(item.url)) {
item.changefreq = 'daily';
item.lastmod = new Date();

8
packages/integrations/sitemap/src/index.ts
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@ -38,7 +38,7 @@ export type SitemapOptions =
priority?: number;
// called for each sitemap item just before to save them on disk, sync or async
serialize?(item: SitemapItem): SitemapItem | Promise<SitemapItem>;
serialize?(item: SitemapItem): SitemapItem | Promise<SitemapItem | undefined> | undefined;
}
| undefined;
@ -117,7 +117,13 @@ const createPlugin = (options?: SitemapOptions): AstroIntegration => {
const serializedUrls: SitemapItem[] = [];
for (const item of urlData) {
const serialized = await Promise.resolve(serialize(item));
if (serialized) {
serializedUrls.push(serialized);
}
}
if (serializedUrls.length === 0) {
logger.warn('No pages found!');
return;
}
urlData = serializedUrls;
} catch (err) {