2026-05-31 13:54:31 +02:00

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# markdown-it-async
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[![npm downloads][npm-downloads-src]][npm-downloads-href]
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[![JSDocs][jsdocs-src]][jsdocs-href]
[![License][license-src]][license-href]
Enhance [`markdown-it`](https://github.com/markdown-it/markdown-it) to support **async** highlight function.
## Usage
```ts
import MarkdownItAsync from 'markdown-it-async'
const md = MarkdownItAsync({
async highlight(code, lang) {
const { codeToHtml } = await import('shiki')
return await codeToHtml(code, { lang, theme: 'vitesse-dark' })
}
})
const html = await md.renderAsync(markdown)
```
## How it works?
This package is a thin wrapper around `markdown-it` to support async highlight function. It uses [the approch suggested in `markdown-it`'s docs](https://github.com/markdown-it/markdown-it/blob/master/docs/development.md#i-need-async-rule-how-to-do-it), by putting placeholders in sync mode and then replace them with async results.
The goal is to make it easy to use and absorb the "hack" into the library itself.
## Sponsors
<p align="center">
<a href="https://cdn.jsdelivr.net/gh/antfu/static/sponsors.svg">
<img src='https://cdn.jsdelivr.net/gh/antfu/static/sponsors.svg'/>
</a>
</p>
## License
[MIT](./LICENSE) License © 2024-PRESENT [Anthony Fu](https://github.com/antfu)
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