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import markdownIt from "markdown-it";
const md = markdownIt();
export default {
layout: "default",
tags: "post",
permalink:
"/{{ page.date | date: '%Y/%m/%d', 'Etc/UTC' }}/{{ page.fileSlug }}.html",
showDate: true,
eleventyComputed: {
description: async (data) => {
if (data.description !== undefined && data.description !== "")
return data.description.trim();
if (data.page.rawInput === undefined) return null;
const markdownAST = md.parse(data.page.rawInput, {});
let firstParagraph = "";
let skippingBlockquote = false;
let skippingStrikethrough = false;
extractParagraph: for (const astNode of markdownAST) {
if (skippingBlockquote) {
if (astNode.type === "blockquote_close") skippingBlockquote = false;
continue;
}
switch (astNode.type) {
case "paragraph_open":
continue;
case "inline":
for (const child of astNode.children) {
if (skippingStrikethrough) {
if (child.type === "s_close") {
skippingStrikethrough = false;
// hopefully this is just never wrong
if (firstParagraph.endsWith(" ")) {
firstParagraph = firstParagraph.replace(/ $/, "");
}
}
continue;
}
switch (child.type) {
case "text":
firstParagraph += child.content;
break;
case "softbreak":
firstParagraph += " ";
break;
case "link_open":
case "link_close":
case "em_open":
case "em_close":
case "strong_open":
case "strong_close":
break;
case "s_open":
skippingStrikethrough = true;
break;
default:
console.log(data.page.fileSlug, "inline", child);
}
}
break;
case "paragraph_close":
break extractParagraph;
case "blockquote_open":
skippingBlockquote = true;
break;
case "ordered_list_open":
throw TypeError(
`Can't auto-generate description for ${data.page.inputPath} - starts with list`,
);
default:
console.log(data.page.fileSlug, "block", astNode);
}
}
return firstParagraph;
},
},
};
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