Gathering detailed insights and metrics for mdast-util-mdxjs-esm
mdast extension to parse and serialize MDX.js ESM (import/exports)
Installations
npm install mdast-util-mdxjs-esmDeveloper Guide
BETA
Typescript
Yes
Module System
ESM
Node Version
20.0.0
NPM Version
9.7.2
Score
97.7
Supply Chain
99.5
Quality
78
Maintenance
100
Vulnerability
100
License
Releases
11
Contributors
10
Unable to fetch Contributors
Languages
1
JavaScript
JavaScript (100%)
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Developer
Download Statistics
Total Downloads
224,189,440
Last Day
750,004
Last Week
3,939,872
Last Month
16,414,638
Last Year
133,906,189
GitHub Statistics
MIT License
8 Stars
74 Commits
7 Watchers
1 Branches
10 Contributors
Updated on Sep 13, 2024
Bundle Size
792.00 B
Minified
419.00 B
Minified + Gzipped
Sponsor this package
Maintainers
2
Package Meta Information
Latest Version
2.0.1
Package Id
mdast-util-mdxjs-esm@2.0.1
Unpacked Size
19.87 kB
Size
6.14 kB
File Count
7
NPM Version
9.7.2
Node Version
20.0.0
Published on
Aug 08, 2023
Total Downloads
Cumulative downloads
Total Downloads
224,189,440
Last Day
3.4%
750,004
Compared to previous day
Last Week
3.7%
3,939,872
Compared to previous week
Last Month
17.5%
16,414,638
Compared to previous month
Last Year
151.1%
133,906,189
Compared to previous year
Daily Downloads
Weekly Downloads
Monthly Downloads
Yearly Downloads
mdast-util-mdxjs-esm
mdast extensions to parse and serialize MDX ESM (import/exports).
Contents
- What is this?
- When to use this
- Install
- Use
- API
- HTML
- Syntax
- Syntax tree
- Types
- Compatibility
- Related
- Contribute
- License
What is this?
This package contains two extensions that add support for MDX ESM syntax in
markdown to mdast.
These extensions plug into
mdast-util-from-markdown (to support parsing
ESM in markdown into a syntax tree) and
mdast-util-to-markdown (to support serializing
ESM in syntax trees to markdown).
When to use this
You can use these extensions when you are working with
mdast-util-from-markdown and mdast-util-to-markdown already.
When working with mdast-util-from-markdown, you must combine this package
with micromark-extension-mdxjs-esm.
When you are working with syntax trees and want all of MDX, use
mdast-util-mdx instead.
All these packages are used in remark-mdx, which
focusses on making it easier to transform content by abstracting these
internals away.
Install
This package is ESM only. In Node.js (version 16+), install with npm:
1npm install mdast-util-mdxjs-esm
In Deno with esm.sh:
1import {mdxjsEsmFromMarkdown, mdxjsEsmToMarkdown} from 'https://esm.sh/mdast-util-mdxjs-esm@2'
In browsers with esm.sh:
1<script type="module"> 2 import {mdxjsEsmFromMarkdown, mdxjsEsmToMarkdown} from 'https://esm.sh/mdast-util-mdxjs-esm@2?bundle' 3</script>
Use
Say our document example.mdx contains:
1import a from 'b' 2export const c = '' 3 4d
…and our module example.js looks as follows:
1import fs from 'node:fs/promises' 2import * as acorn from 'acorn' 3import {fromMarkdown} from 'mdast-util-from-markdown' 4import {toMarkdown} from 'mdast-util-to-markdown' 5import {mdxjsEsm} from 'micromark-extension-mdxjs-esm' 6import {mdxjsEsmFromMarkdown, mdxjsEsmToMarkdown} from 'mdast-util-mdxjs-esm' 7 8const doc = await fs.readFile('example.mdx') 9 10const tree = fromMarkdown(doc, { 11 extensions: [mdxjsEsm({acorn, addResult: true})], 12 mdastExtensions: [mdxjsEsmFromMarkdown()] 13}) 14 15console.log(tree) 16 17const out = toMarkdown(tree, {extensions: [mdxjsEsmToMarkdown()]}) 18 19console.log(out)
…now running node example.js yields (positional info removed for brevity):
1{ 2 type: 'root', 3 children: [ 4 { 5 type: 'mdxjsEsm', 6 value: "import a from 'b'\nexport const c = ''", 7 data: { 8 estree: { 9 type: 'Program', 10 body: [ 11 { 12 type: 'ImportDeclaration', 13 specifiers: [ 14 { 15 type: 'ImportDefaultSpecifier', 16 local: {type: 'Identifier', name: 'a'} 17 } 18 ], 19 source: {type: 'Literal', value: 'b', raw: "'b'"} 20 }, 21 { 22 type: 'ExportNamedDeclaration', 23 declaration: { 24 type: 'VariableDeclaration', 25 declarations: [ 26 { 27 type: 'VariableDeclarator', 28 id: {type: 'Identifier', name: 'c'}, 29 init: {type: 'Literal', value: '', raw: "''"} 30 } 31 ], 32 kind: 'const' 33 }, 34 specifiers: [], 35 source: null 36 } 37 ], 38 sourceType: 'module' 39 } 40 } 41 }, 42 {type: 'paragraph', children: [{type: 'text', value: 'd'}]} 43 ] 44}
1import a from 'b' 2export const c = '' 3 4d
API
This package exports the identifiers
mdxjsEsmFromMarkdown and
mdxjsEsmToMarkdown.
There is no default export.
mdxjsEsmFromMarkdown()
Create an extension for mdast-util-from-markdown
to enable MDX.js ESM in markdown.
When using the micromark syntax extension with addResult, nodes
will have a data.estree field set to an ESTree Program node.
Returns
Extension for mdast-util-from-markdown to enable MDX.js ESM
(FromMarkdownExtension).
mdxjsEsmToMarkdown()
Create an extension for mdast-util-to-markdown
to enable MDX.js ESM in markdown.
Returns
Extension for mdast-util-to-markdown to enable MDX.js ESM
(ToMarkdownExtension).
MdxjsEsm
MDX ESM (import/export) node (TypeScript type).
Type
1import type {Program} from 'estree-jsx' 2import type {Data, Literal} from 'mdast' 3 4interface MdxjsEsm extends Literal { 5 type: 'mdxjsEsm' 6 data?: MdxjsEsmData | undefined 7} 8 9export interface MdxjsEsmData extends Data { 10 estree?: Program | null | undefined 11}
MdxjsEsmHast
Same as MdxjsEsm, but registered with @types/hast
(TypeScript type).
Type
1import type {Program} from 'estree-jsx' 2import type {Data, Literal} from 'hast' 3 4interface MdxjsEsmHast extends Literal { 5 type: 'mdxjsEsm' 6 data?: MdxjsEsmHastData | undefined 7} 8 9export interface MdxjsEsmHastData extends Data { 10 estree?: Program | null | undefined 11}
HTML
MDX ESM has no representation in HTML.
Though, when you are dealing with MDX, you will likely go through hast.
You can enable passing MDX ESM through to hast by configuring
mdast-util-to-hast with passThrough: ['mdxjsEsm'].
Syntax
See Syntax in micromark-extension-mdxjs-esm.
Syntax tree
The following interfaces are added to mdast by this utility.
Nodes
MdxjsEsm
1interface MdxjsEsm <: Literal { 2 type: 'mdxjsEsm' 3}
MdxjsEsm (Literal) represents ESM import/exports
embedded in MDX.
It can be used where flow content is expected.
Its content is represented by its value field.
For example, the following Markdown:
1import a from 'b'
Yields:
1{ 2 type: 'mdxjsEsm', 3 value: 'import a from \'b\'' 4}
Content model
FlowContent (MDX.js ESM)
1type FlowContentMdxjsEsm = MdxjsEsm | FlowContent
Note that when ESM is present, it can only exist as top-level content: if it has a parent, that parent must be Root.
Types
This package is fully typed with TypeScript.
It exports the additional types MdxjsEsm and
MdxjsEsmHast.
It also registers the node type with @types/mdast and @types/hast.
If you’re working with the syntax tree, make sure to import this utility
somewhere in your types, as that registers the new node types in the tree.
1/** 2 * @typedef {import('mdast-util-mdxjs-esm')} 3 */ 4 5import {visit} from 'unist-util-visit' 6 7/** @type {import('mdast').Root} */ 8const tree = getMdastNodeSomeHow() 9 10visit(tree, function (node) { 11 // `node` can now be an ESM node. 12})
Compatibility
Projects maintained by the unified collective are compatible with maintained versions of Node.js.
When we cut a new major release, we drop support for unmaintained versions of
Node.
This means we try to keep the current release line, mdast-util-mdxjs-esm@^2,
compatible with Node.js 16.
This utility works with mdast-util-from-markdown version 2+ and
mdast-util-to-markdown version 2+.
Related
remarkjs/remark-mdx— remark plugin to support MDXsyntax-tree/mdast-util-mdx— mdast utility to support MDXmicromark/micromark-extension-mdxjs-esm— micromark extension to parse MDX.js ESM
Contribute
See contributing.md in syntax-tree/.github for
ways to get started.
See support.md for ways to get help.
This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.
License
No vulnerabilities found.
Reason
no dangerous workflow patterns detected
Reason
no binaries found in the repo
Reason
0 existing vulnerabilities detected
Reason
license file detected
Details
- Info: project has a license file: license:0
- Info: FSF or OSI recognized license: MIT License: license:0
Reason
security policy file detected
Details
- Info: security policy file detected: github.com/syntax-tree/.github/security.md:1
- Info: Found linked content: github.com/syntax-tree/.github/security.md:1
- Info: Found disclosure, vulnerability, and/or timelines in security policy: github.com/syntax-tree/.github/security.md:1
- Info: Found text in security policy: github.com/syntax-tree/.github/security.md:1
Reason
0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
Reason
detected GitHub workflow tokens with excessive permissions
Details
- Warn: no topLevel permission defined: .github/workflows/bb.yml:1
- Warn: no topLevel permission defined: .github/workflows/main.yml:1
- Info: no jobLevel write permissions found
Reason
Found 0/30 approved changesets -- score normalized to 0
Reason
no SAST tool detected
Details
- Warn: no pull requests merged into dev branch
Reason
dependency not pinned by hash detected -- score normalized to 0
Details
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/bb.yml:11: update your workflow using https://app.stepsecurity.io/secureworkflow/syntax-tree/mdast-util-mdxjs-esm/bb.yml/main?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/main.yml:6: update your workflow using https://app.stepsecurity.io/secureworkflow/syntax-tree/mdast-util-mdxjs-esm/main.yml/main?enable=pin
- Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/main.yml:7: update your workflow using https://app.stepsecurity.io/secureworkflow/syntax-tree/mdast-util-mdxjs-esm/main.yml/main?enable=pin
- Warn: third-party GitHubAction not pinned by hash: .github/workflows/main.yml:12: update your workflow using https://app.stepsecurity.io/secureworkflow/syntax-tree/mdast-util-mdxjs-esm/main.yml/main?enable=pin
- Warn: npmCommand not pinned by hash: .github/workflows/main.yml:11
- Info: 0 out of 2 GitHub-owned GitHubAction dependencies pinned
- Info: 0 out of 2 third-party GitHubAction dependencies pinned
- Info: 0 out of 1 npmCommand dependencies pinned
Reason
no effort to earn an OpenSSF best practices badge detected
Reason
project is not fuzzed
Details
- Warn: no fuzzer integrations found
Reason
branch protection not enabled on development/release branches
Details
- Warn: branch protection not enabled for branch 'main'
Score
4.1
/10
Last Scanned on 2025-03-10
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