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perf(gatsby-plugin-mdx): performance changes (#26004)
Re-submit of #24595 Drops a babel step This Babel step was used to get exports and remark header but we can use the mdast for this purpose, just like for imports. > This cuts off 20 to 30% of the total runtime of a baseline mdx benchmark! Co-authored-by: Laurie Barth <laurie@LauriesrkLaptop.fios-router.home> Co-authored-by: Peter van der Zee <github-public@qfox.nl>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,46 +1,17 @@ | ||
| const { createContentDigest } = require(`gatsby-core-utils`) | ||
| const withDefaultOptions = require(`../utils/default-options`) | ||
| const { getNodesByType } = require(`gatsby/dist/redux/nodes.js`) | ||
| const createMdxNodeWithScope = require(`../utils/mdx-node-with-scope`) | ||
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| const mdx = require(`../utils/mdx`) | ||
| const extractExports = require(`../utils/extract-exports`) | ||
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| module.exports = async ({ id, node, content }) => { | ||
| let code | ||
| try { | ||
| code = await mdx(content) | ||
| } catch (e) { | ||
| // add the path of the file to simplify debugging error messages | ||
| e.message += `${node.absolutePath}: ${e.message}` | ||
| throw e | ||
| } | ||
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| // extract all the exports | ||
| const { frontmatter, ...nodeExports } = extractExports(code) | ||
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| const mdxNode = { | ||
| async function createMdxNodeLegacy({ id, node, content } = {}) { | ||
| const nodeWithScope = await createMdxNodeWithScope({ | ||
| id, | ||
| children: [], | ||
| parent: node.id, | ||
| internal: { | ||
| content: content, | ||
| type: `Mdx`, | ||
| }, | ||
| } | ||
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| mdxNode.frontmatter = { | ||
| title: ``, // always include a title | ||
| ...frontmatter, | ||
| } | ||
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| mdxNode.excerpt = frontmatter.excerpt | ||
| mdxNode.exports = nodeExports | ||
| mdxNode.rawBody = content | ||
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| // Add path to the markdown file path | ||
| if (node.internal.type === `File`) { | ||
| mdxNode.fileAbsolutePath = node.absolutePath | ||
| } | ||
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| mdxNode.internal.contentDigest = createContentDigest(mdxNode) | ||
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| return mdxNode | ||
| node, | ||
| content, | ||
| getNodesByType, | ||
| options: withDefaultOptions({ plugins: [] }), | ||
| }) | ||
| return nodeWithScope.mdxNode | ||
| } | ||
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| // This function is deprecated in favor of createMDXNodeWithScope and slated to be dropped in v3 | ||
| module.exports = createMdxNodeLegacy |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| const { createContentDigest } = require(`gatsby-core-utils`) | ||
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| const { findImportsExports } = require(`../utils/gen-mdx`) | ||
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| async function createMdxNodeWithScope({ id, node, content, ...helpers }) { | ||
| const { | ||
| frontmatter, | ||
| scopeImports, | ||
| scopeExports, | ||
| scopeIdentifiers, | ||
| } = await findImportsExports({ | ||
| node, | ||
| rawInput: content, | ||
| absolutePath: node.absolutePath, | ||
| ...helpers, | ||
| }) | ||
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| const mdxNode = { | ||
| id, | ||
| children: [], | ||
| parent: node.id, | ||
| internal: { | ||
| content, | ||
| type: `Mdx`, | ||
| }, | ||
| excerpt: frontmatter.excerpt, | ||
| exports: scopeExports, | ||
| rawBody: content, | ||
| frontmatter: { | ||
| title: ``, // always include a title | ||
| ...frontmatter, | ||
| }, | ||
| } | ||
|
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| // Add path to the markdown file path | ||
| if (node.internal.type === `File`) { | ||
| mdxNode.fileAbsolutePath = node.absolutePath | ||
| } | ||
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| mdxNode.internal.contentDigest = createContentDigest(mdxNode) | ||
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| return { mdxNode, scopeIdentifiers, scopeImports } | ||
| } | ||
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| module.exports = createMdxNodeWithScope |