Files
indiekit-blog/_data/eleventyComputed.js
2026-03-08 02:45:11 +01:00

72 lines
2.6 KiB
JavaScript

/**
* Computed data resolved during the data cascade.
*
* Eleventy 3.x parallel rendering causes `page.url`, `page.fileSlug`,
* and `page.inputPath` to return values from OTHER pages being processed
* concurrently. This affects both templates and eleventyComputed functions.
*
* IMPORTANT: Only `permalink` is computed here, because it reads from the
* file's own frontmatter data (per-file, immune to race conditions).
* OG image lookups are done in templates using the `permalink` data value
* and Nunjucks filters (see base.njk).
*
* NEVER use `page.url`, `page.fileSlug`, or `page.inputPath` here.
*
* See: https://github.com/11ty/eleventy/issues/3183
*/
const normalizeOutputPermalink = (permalink) => {
if (typeof permalink !== "string") return permalink;
// Convert accidental absolute URLs to Eleventy output paths.
if (/^https?:\/\//i.test(permalink)) {
try {
const { pathname } = new URL(permalink);
if (!pathname) return "/";
return pathname.endsWith("/") ? pathname : `${pathname}/`;
} catch {
return permalink;
}
}
return permalink;
};
export default {
eleventyComputed: {
// Compute permalink from file path for posts without explicit frontmatter permalink.
// Pattern: content/{type}/{yyyy}-{MM}-{dd}-{slug}.md → /{type}/{yyyy}/{MM}/{dd}/{slug}/
permalink: (data) => {
// Convert stale /content/ permalinks from pre-beta.37 posts to canonical format
const explicitPermalink = normalizeOutputPermalink(data.permalink);
if (explicitPermalink && typeof explicitPermalink === "string") {
const contentMatch = explicitPermalink.match(
/^\/content\/([^/]+)\/(\d{4})-(\d{2})-(\d{2})-(.+?)\/?$/
);
if (contentMatch) {
const [, type, year, month, day, slug] = contentMatch;
return `/${type}/${year}/${month}/${day}/${slug}/`;
}
// Valid non-/content/ permalink — use as-is
return explicitPermalink;
}
// No frontmatter permalink — compute from file path
// NOTE: data.page.inputPath may be wrong due to parallel rendering,
// but posts without frontmatter permalink are rare (only pre-beta.37 edge cases)
const inputPath = data.page?.inputPath || "";
const match = inputPath.match(
/content\/([^/]+)\/(\d{4})-(\d{2})-(\d{2})-(.+)\.md$/
);
if (match) {
const [, type, year, month, day, slug] = match;
return `/${type}/${year}/${month}/${day}/${slug}/`;
}
// For non-matching files (pages, root files), let Eleventy decide
return data.permalink;
},
},
};