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contentlayer.config.ts
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contentlayer.config.ts
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import {
defineDocumentType,
ComputedFields,
makeSource,
defineNestedType,
} from 'contentlayer2/source-files'
import { writeFileSync } from 'fs'
import readingTime from './lib/utils/readingTime'
import { slug } from 'github-slugger'
import path from 'path'
import { fromHtmlIsomorphic } from 'hast-util-from-html-isomorphic'
// Remark packages
import remarkGfm from 'remark-gfm'
import remarkMath from 'remark-math'
import {
remarkExtractFrontmatter,
remarkCodeTitles,
remarkImgToJsx,
extractTocHeadings,
} from 'pliny/mdx-plugins/index.js'
// Rehype packages
import rehypeSlug from 'rehype-slug'
import rehypeAutolinkHeadings from 'rehype-autolink-headings'
import rehypeKatex from 'rehype-katex'
import rehypeCitation from 'rehype-citation'
import rehypePrismPlus from 'rehype-prism-plus'
import rehypePresetMinify from 'rehype-preset-minify'
import siteMetadata from './config/siteMetadata'
import { allCoreContent, sortPosts } from 'pliny/utils/contentlayer.js'
const root = process.cwd()
// heroicon mini link
const icon = fromHtmlIsomorphic(
`
<span class="content-header-link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" className="w-5 h-5 linkicon">
<path d="M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z" />
<path d="M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z" />
</svg>
</span>
`,
{ fragment: true }
)
const computedFields: ComputedFields = {
readingTime: { type: 'json', resolve: (doc) => readingTime(doc.body.raw) },
slug: {
type: 'string',
resolve: (doc) => doc._raw.flattenedPath.replace(/^.+?(\/)/, ''),
},
path: {
type: 'string',
resolve: (doc) => doc._raw.flattenedPath,
},
filePath: {
type: 'string',
resolve: (doc) => doc._raw.sourceFilePath,
},
toc: { type: 'string', resolve: (doc) => extractTocHeadings(doc.body.raw) },
}
/**
* Count the occurrences of all tags and categories across blog posts and write to json file
*/
function createCategoryCount(allBlogs) {
const categoryCount: Record<string, number> = {}
allBlogs.forEach((file) => {
if (file.categories && file.draft === false) {
file.categories.forEach((category) => {
const formattedCategory = slug(category)
if (formattedCategory in categoryCount) {
categoryCount[formattedCategory] += 1
} else {
categoryCount[formattedCategory] = 1
}
})
}
})
writeFileSync('./config/data/category-data.json', JSON.stringify(categoryCount))
console.log('Results for category-data.json written.')
}
function createTagCount(allBlogs) {
const tagCount: Record<string, number> = {}
allBlogs.forEach((file) => {
if (file.tags && file.draft === false) {
file.tags.forEach((tag) => {
const formattedTag = slug(tag)
if (formattedTag in tagCount) {
tagCount[formattedTag] += 1
} else {
tagCount[formattedTag] = 1
}
})
}
})
writeFileSync('./config/data/tag-data.json', JSON.stringify(tagCount))
console.log('Results for tag-data.json written.')
}
function createSearchIndex(allBlogs) {
if (
siteMetadata?.search?.provider === 'kbar' &&
siteMetadata.search.kbarConfig.searchDocumentsPath
) {
writeFileSync(
`public/${siteMetadata.search.kbarConfig.searchDocumentsPath}`,
JSON.stringify(allCoreContent(sortPosts(allBlogs)))
)
console.log('Local search index generated...')
}
}
export const Series = defineNestedType(() => ({
name: 'Series',
fields: {
title: {
type: 'string',
required: true,
},
order: {
type: 'number',
required: true,
},
},
}))
export const Blog = defineDocumentType(() => ({
name: 'Blog',
filePathPattern: '**/**/*.*',
contentType: 'mdx',
fields: {
title: { type: 'string', required: true },
series: { type: 'nested', of: Series },
meta_title: { type: 'string' },
description: { type: 'string' },
date: { type: 'date', required: true },
image: { type: 'string' },
categories: { type: 'list', of: { type: 'string' }, default: [] },
tags: { type: 'list', of: { type: 'string' }, default: [] },
lastmod: { type: 'date' },
draft: { type: 'boolean' },
summary: { type: 'string' },
authors: { type: 'list', of: { type: 'string' } },
serie: { type: 'string' },
layout: { type: 'string' },
bibliography: { type: 'string' },
canonicalUrl: { type: 'string' },
},
computedFields: {
...computedFields,
structuredData: {
type: 'json',
resolve: (doc) => ({
'@context': 'https://schema.org',
'@type': 'BlogPosting',
headline: doc.title,
datePublished: doc.date,
dateModified: doc.lastmod || doc.date,
description: doc.summary,
image: doc.image ? doc.image[0] : siteMetadata.socialBanner,
url: `${siteMetadata.siteUrl}/${doc._raw.flattenedPath}`,
}),
},
},
}))
export default makeSource({
contentDirPath: 'content/blog',
documentTypes: [Blog],
mdx: {
cwd: process.cwd(),
remarkPlugins: [
remarkExtractFrontmatter,
remarkGfm,
remarkCodeTitles,
remarkMath,
remarkImgToJsx,
],
rehypePlugins: [
rehypeSlug,
[
rehypeAutolinkHeadings,
{
behavior: 'prepend',
headingProperties: {
className: ['content-header'],
},
content: icon,
},
],
rehypeKatex,
[rehypeCitation, { path: path.join(root, 'content', 'blog') }],
[rehypePrismPlus, { defaultLanguage: 'js', ignoreMissing: true }],
rehypePresetMinify,
],
},
onSuccess: async (importData) => {
const { allBlogs } = await importData()
createCategoryCount(allBlogs)
createTagCount(allBlogs)
createSearchIndex(allBlogs)
},
})