yoginth.com
Hey is a decentralized and permissionless social media app built with Lens Protocol 馃尶
1import rehypeParse from "rehype-parse";
2import rehypeRemark from "rehype-remark";
3import remarkHtml from "remark-html";
4import remarkParse from "remark-parse";
5import remarkStringify from "remark-stringify";
6import { unified } from "unified";
7import { rehypeJoinParagraph } from "./rehypeJoinParagraph";
8import { customBreakHandler } from "./remarkBreakHandler";
9import { remarkLinkProtocol } from "./remarkLinkProtocol";
10
11// By default, remark-stringify escapes underscores (i.e. "_" => "\_"). We want
12// to disable this behavior so that we can have underscores in mention usernames.
13const unescapeUnderscore = (str: string) => {
14 return str.replace(/(^|[^\\])\\_/g, "$1_");
15};
16
17export const markdownFromHTML = (html: string): string => {
18 const markdown = unified()
19 .use(rehypeParse)
20 .use(rehypeJoinParagraph)
21 .use(rehypeRemark, { newlines: true })
22 .use(remarkLinkProtocol)
23 .use(remarkStringify, {
24 handlers: { break: customBreakHandler, hardBreak: customBreakHandler }
25 })
26 .processSync(html)
27 .toString();
28
29 return unescapeUnderscore(markdown);
30};
31
32export const htmlFromMarkdown = (markdown: string): string => {
33 return unified()
34 .use(remarkParse)
35 .use(remarkHtml)
36 .processSync(markdown)
37 .toString();
38};