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contentlayer.config.ts
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contentlayer.config.ts
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/* eslint-disable no-restricted-syntax */
/* eslint-disable no-param-reassign */
/* eslint-disable no-underscore-dangle */
import { defineDocumentType, makeSource } from 'contentlayer/source-files';
import readingTime from 'reading-time';
import rehypePrettyCode from 'rehype-pretty-code';
import remarkGfm from 'remark-gfm';
import { visit } from 'unist-util-visit';
import rehypeSlug from 'rehype-slug';
import rehypeAutolinkHeadings from 'rehype-autolink-headings';
import { theme } from './src/constants/theme';
export const Post = defineDocumentType(() => ({
name: 'Post',
filePathPattern: `**/*.mdx`,
contentType: 'mdx',
fields: {
title: {
type: 'string',
description: 'The title of the post',
required: true,
},
date: {
type: 'date',
description: 'The date of the post',
required: true,
},
description: {
type: 'string',
description: 'The description of the post',
required: true,
},
published: {
type: 'boolean',
description: 'Whether the post is published',
required: false,
default: true,
},
},
computedFields: {
url: {
type: 'string',
resolve: (post) => `/posts/${post._raw.flattenedPath}`,
},
path: {
type: 'string',
resolve: (post) => post._raw.flattenedPath,
},
createdAt: {
type: 'number',
resolve: (post) => new Date(post.date).getTime(),
},
readingTime: {
type: 'string',
resolve: (post) => readingTime(post.body.raw).text,
},
},
}));
export default makeSource({
contentDirPath: 'src/posts',
documentTypes: [Post],
mdx: {
// Github markdown plugin
remarkPlugins: [remarkGfm],
rehypePlugins: [
// Rehype slug plugin
rehypeSlug,
// Rehype syntax highlighting plugin
[
rehypePrettyCode,
{
theme,
onVisitLine(node: any) {
if (node.children.length === 0) {
node.children = [{ type: 'text', value: ' ' }];
}
},
onVisitHighlightedLine(node: any) {
node.properties.className.push('line--highlighted');
},
onVisitHighlightedWord(node: any) {
node.properties.className = ['word--highlighted'];
},
},
],
// Transformation to pass raw value to each code block
() => (tree) => {
visit(tree, (node) => {
if (node?.type === 'element' && node?.tagName === 'div') {
if (!('data-rehype-pretty-code-fragment' in node.properties)) {
return;
}
for (const child of node.children) {
if (child.tagName === 'pre') {
child.properties.raw = node.raw;
}
}
}
});
},
[
rehypeAutolinkHeadings,
{
properties: {
className: ['anchor'],
},
},
],
],
},
});