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const RE_IMG = /<img.*?src="(.*?)".*?>(.*?)<\/img>/i;
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const RE_A = /<a.*?href="(.*?)".*?>(.*?)<\/a>/i;
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const RE_BLOCKQUOTE = /<blockquote.*?>(.*?)<\/blockquote>/i;
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function replacer(RE, cb) { // eslint-disable-line no-unused-vars
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// eslint-disable-next-line no-eval
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return eval(`(substr)=>{
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const s = RE.exec(substr);
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return cb(s);
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}`);
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}
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function html2md(str) {
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return str.replace(/<p>/gmi, '').replace(/<\/p>/gmi, ' ')
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.replace(/<h[1-6]>/gmi, (substr) => {
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const s = /<h[1-6]>/i.exec(substr);
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return `${'#'.repeat(parseInt(s[1]))} `;
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})
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.replace(/<\/h[0-6]>/, '\n')
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.replace(/<\/?code>/, '\n```\n')
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.replace(/<img.*?src=".*?".*?>.*?<\/img>/gmi, replacer(RE_IMG, (s) => `![${s[2]}](${s[1]})`))
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.replace(/<a.*?href=".*?".*?>.*?<\/a>/gmi, replacer(RE_A, (s) => `[${s[2]}](${s[1]})`))
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.replace(/<blockquote.*?>.*?<\/blockquote>/gmi, replacer(RE_BLOCKQUOTE, (s) => `> ${s[1]}`));
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}
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global.Hydro.lib.html2md = module.exports = html2md;
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