@europeana/portal/src/mixins/stripMarkdown.js

Europeana Portal

import { marked } from 'marked';

const htmlRemovalPatternsFromTags = (tags) => {
  return [/\n$/].concat(tags.map((tag) => new RegExp(`</?${tag}.*?>`, 'gi')));
};

export default {
  methods: {
    /**
     * Strip markdown from text.
     * This method FIRST converts markdown to HTML, then removes HTML tags.
     * WARNING: This also means any HTML tags already present before will be stripped.
     *
     * As an optional parameter specific HTML tag names can be supplied. In which case,
     * only these will be removed.
     * @param {string} text String containing mark1down
     * @param {string[]} tags the HTML tags to be removed.
     * @return {String} text value with HTML breaks
     */
    stripMarkdown(text, tags = ['']) {
      text = marked.parse(text); // Marked adds newlines to the end of the string, and wraps it in a <p> tag.
      for (const pattern of htmlRemovalPatternsFromTags(tags)) {
        text = text.replace(pattern, '');
      }
      return text;
    }
  }
};