| 1 | const crypto = require('crypto');
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| 2 | const grayMatter = require('gray-matter');
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| 3 |
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| 4 | module.exports = async ({ node, actions, loadNodeContent, createNodeId }) => {
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| 5 | const { createNode, createParentChildLink } = actions;
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| 6 |
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| 7 | if (node.internal.type === 'File' && node.ext === '.mdx') {
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| 8 | const content = await loadNodeContent(node);
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| 9 | const { data: frontmatter, content: body } = grayMatter(content);
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| 10 |
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| 11 | const mdxNode = {
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| 12 | id: createNodeId(`${node.id} -> Mdx`),
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| 13 | children: [],
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| 14 | parent: node.id,
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| 15 | internal: { type: 'Mdx' },
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| 16 | fileAbsolutePath: node.absolutePath,
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| 17 | sourceName: node.sourceInstanceName,
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| 18 | frontmatter: {
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| 19 | ...frontmatter,
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| 20 | title: frontmatter.title == null ? '' : frontmatter.title,
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| 21 | },
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| 22 | body,
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| 23 | };
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| 24 |
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| 25 | mdxNode.internal.contentDigest = crypto
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| 26 | .createHash('md5')
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| 27 | .update(JSON.stringify(mdxNode))
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| 28 | .digest('hex');
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| 29 |
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| 30 | createNode(mdxNode);
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| 31 | createParentChildLink({ parent: node, child: mdxNode });
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| 32 | }
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| 33 | };
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