Parse API

import { parseMarkdown } from 'comark'
import summary from 'comark/plugins/summary'

const content = `# Article Title

This is the introduction paragraph that will be used as a summary.

<!-- more -->

This is the full article content that won't appear in the summary.
`

const result = await parseMarkdown(content, {
  plugins: [summary()]
})

console.log(result.meta.summary)
// Node[] with only the content before <!-- more -->

import { createMarkdownParser } from 'comark'
import shiki from 'comark/plugins/shiki'
import githubLight from '@shikijs/themes/github-light'
import githubDark from '@shikijs/themes/github-dark'
import emoji from 'comark/plugins/emoji'
import toc from 'comark/plugins/toc'

// Create a parser with specific configuration
const parse = createMarkdownParser({
  autoUnwrap: true,
  autoClose: true,
  plugins: [
    shiki({
      themes: { light: githubLight, dark: githubDark }
    }),
    emoji(),
    toc()
  ]
})

// Reuse the parser for multiple documents
const doc1 = await parseMarkdown('# Document 1\n\nContent...')
const doc2 = await parseMarkdown('# Document 2\n\nMore content...')
const doc3 = await parseMarkdown('# Document 3\n\nEven more...')

import { createMarkdownParser } from 'comark'
import { readdir, readFile, writeFile } from 'node:fs/promises'
import { join } from 'node:path'
import { renderHtmlFromDocument } from '@comark/html'
import shiki from 'comark/plugins/shiki'
import githubLight from '@shikijs/themes/github-light'
import githubDark from '@shikijs/themes/github-dark'
import toc from 'comark/plugins/toc'
import emoji from 'comark/plugins/emoji'

async function buildSite(contentDir: string, outDir: string) {
  // Create parser once with all desired plugins
  const parse = createMarkdownParser({
    plugins: [
      shiki({
        themes: { light: githubLight, dark: githubDark }
      }),
      toc({ depth: 3 }),
      emoji()
    ]
  })

  const files = await readdir(contentDir)
  const mdFiles = files.filter(f => f.endsWith('.md'))

  // Parse all files in parallel with the same parser instance
  await Promise.all(
    mdFiles.map(async (file) => {
      const content = await readFile(join(contentDir, file), 'utf-8')
      const doc = await parseMarkdown(content)
      const html = await renderHtmlFromDocument(doc)
      await writeFile(join(outDir, file.replace('.md', '.html')), html)
    })
  )

  console.log(`Built ${mdFiles.length} pages`)
}

await buildSite('./content', './dist')

import { createMarkdownParser } from 'comark'
import security from 'comark/plugins/security'

// Create parser once when server starts
const parse = createMarkdownParser({
  plugins: [
    security() // Sanitize user-generated content
  ]
})

// Reuse parser for every request
app.post('/api/markdown', async (req, res) => {
  try {
    const tree = await parseMarkdown(req.body.content)
    res.json({ success: true, tree })
  } catch (error) {
    res.status(400).json({ error: 'Invalid markdown' })
  }
})

import { parseMarkdown, createMarkdownParser } from 'comark'
import shiki from 'comark/plugins/shiki'

const content = '```js\nconsole.log("hello")\n```'

// ❌ Slow: Creates new parser + highlighter for each parse
console.time('parse x1000')
for (let i = 0; i < 1000; i++) {
  await parseMarkdown(content, {
    plugins: [shiki()]
  })
}
console.timeEnd('parse x1000')
// → ~8000ms (parser + highlighter recreated 1000 times)

// ✅ Fast: Reuses same parser + highlighter instance
console.time('createMarkdownParser x1000')
const parse = createMarkdownParser({
  plugins: [shiki()]
})
for (let i = 0; i < 1000; i++) {
  await parseMarkdown(content)
}
console.timeEnd('createMarkdownParser x1000')
// → ~800ms (10x faster! parser + highlighter created once)