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import remark from 'remark';
import github from 'remark-github';
import { regEx } from './regex';
// Generic replacements/link-breakers
export function sanitizeMarkdown(markdown: string): string {
let res = markdown;
// Put a zero width space after every # followed by a digit
res = res.replace(regEx(/(\W)#(\d)/gi), '$1#​$2');
// Put a zero width space after every @ symbol to prevent unintended hyperlinking
res = res.replace(regEx(/@/g), '@​');
res = res.replace(regEx(/(`\[?@)​/g), '$1');
res = res.replace(regEx(/([a-z]@)​/gi), '$1');
res = res.replace(regEx(/\/compare\/@​/g), '/compare/@');
res = res.replace(regEx(/(\(https:\/\/[^)]*?)\.\.\.@​/g), '$1...@');
res = res.replace(regEx(/([\s(])#(\d+)([)\s]?)/g), '$1#​$2$3');
// convert escaped backticks back to `
const backTickRe = regEx(/`([^/]*?)`/g);
res = res.replace(backTickRe, '`$1`');
res = res.replace(regEx(/`#​(\d+)`/g), '`#$1`');
res = res.replace(
regEx(/(?<before>[^\n]\n)(?<title>#.*)/g),
'$<before>\n$<title>',
);
return res;
}
/**
*
* @param content content to process
* @param options github options
* @returns linkified content
*/
export async function linkify(
content: string,
options: github.RemarkGithubOptions,
): Promise<string> {
// https://github.com/syntax-tree/mdast-util-to-markdown#optionsbullet
const output = await remark()
.use({ settings: { bullet: '-' } })
.use(github, { mentionStrong: false, ...options })
.process(content);
return output.toString();
}
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