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Showing content from https://github.com/syntax-tree/mdast-comment-marker below:

syntax-tree/mdast-comment-marker: utility to parse a comment marker in mdast

mdast utility to parse comment markers.

This package is a utility that tries to parse a structured marker from a comment.

Comments are a hidden part of markdown, so they can be used as processing instructions. For example, this utility is used in remark-lint to control whether lint rules are turned on or ignored, and by mdast-zone to replace sections between two markers.

This package is ESM only. In Node.js (version 16+), install with npm:

npm install mdast-comment-marker

In Deno with esm.sh:

import {commentMarker} from 'https://esm.sh/mdast-comment-marker@3'

In browsers with esm.sh:

<script type="module">
  import {commentMarker} from 'https://esm.sh/mdast-comment-marker@3?bundle'
</script>

import {commentMarker} from 'mdast-comment-marker'

console.log(commentMarker({type: 'html', value: '<!--foo-->'}));

console.log(commentMarker({
  type: 'html',
  value: '<!--foo bar baz=12.4 qux="test test" quux=\'false\'-->'
}));

console.log(commentMarker({type: 'html', value: '<!doctype html>'}));

// Also supports MDX expressions:
console.log(commentMarker({
  type: 'mdxFlowExpression',
  value: '/* lint disable heading-style */'
}));

Yields:

{
  name: 'foo',
  attributes: '',
  parameters: {},
  node: { type: 'html', value: '<!--foo-->' }
}
{
  name: 'foo',
  attributes: `bar baz=12.4 qux="test test" quux='false'`,
  parameters: { bar: true, baz: 12.4, qux: 'test test', quux: false },
  node: {
    type: 'html',
    value: `<!--foo bar baz=12.4 qux="test test" quux='false'-->`
  }
}
undefined
{
  name: 'lint',
  attributes: 'disable heading-style',
  parameters: { disable: true, 'heading-style': true },
  node: {
    type: 'mdxFlowExpression',
    value: '/* lint disable heading-style */'
  }
}

This package exports the identifier commentMarker. There is no default export.

Parse a comment marker.

value (unknown) — thing to parse, typically Node

Info (Marker) when applicable or undefined.

Comment marker (TypeScript type).

name (string) — name of marker
attributes (string) — value after name
parameters (MarkerParameters) — parsed attributes
node (Node) — reference to given node

Parameters (TypeScript type).

type MarkerParameters = Record<string, MarkerParameterValue>

Value (TypeScript type).

If it looks like a number (to JavaScript), it’s cast as number. The strings true and false are turned into their corresponding booleans. The empty string is also considered the true boolean.

type MarkerParameterValue = number | string | boolean

This package is fully typed with TypeScript. This package exports the types Marker, MarkerParameters, and MarkerParameterValue

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-comment-marker@^3, compatible with Node.js 16.

Use of mdast-comment-marker does not involve hast, user content, or change the tree, so there are no openings for cross-site scripting (XSS) attacks.

mdast-zone — change or replace a section marked by comments

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.

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