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59 lines
1.7 KiB
TypeScript

import { useContext, useEffect, useRef } from 'preact/hooks'
import { unified } from 'unified'
import remarkParse from 'remark-parse'
import remarkMath from 'remark-math'
import remarkRehype from 'remark-rehype'
import rehypeKatex from 'rehype-katex'
import rehypeStringify from 'rehype-stringify'
import { ServerContext } from '../hooks'
async function renderMarkdownAsync(source: string) {
return await unified()
.use(remarkParse)
.use(remarkMath)
.use(remarkRehype)
.use(rehypeKatex, { throwOnError: false, errorColor: '#c60' })
.use(rehypeStringify)
.process(source)
}
// function renderMarkdownSync(source: string): string {
// return unified()
// .use(remarkParse)
// .use(remarkMath)
// .use(remarkRehype)
// .use(rehypeKatex, { throwOnError: false, errorColor: '#c60' })
// .use(rehypeStringify)
// .processSync(source)
// .toString()
// }
export const Markdown = ({ source }: { source: string }) => {
// Magia nera per renderizzare il markdown lato server
//
// const isServer = useContext(ServerContext)
// if (isServer) {
// return (
// <div
// class="markdown"
// dangerouslySetInnerHTML={{
// __html: renderMarkdownSync(source),
// }}
// ></div>
// )
// }
const elementRef = useRef<HTMLDivElement>(null)
useEffect(() => {
renderMarkdownAsync(source).then(data => {
if (elementRef.current) {
elementRef.current.innerHTML = data.toString()
}
})
}, [source])
return <div class="markdown" ref={elementRef}></div>
}