@chayns-components/emoji-input/lib/esm/utils/text.js

Input field that supports HTML elements and emojis

import { BB_LC_MENTION_REGEX, BB_NER_IGNORE_REGEX, BB_NER_REPLACE_REGEX, HTML_A_TAG_REGEX, HTML_BOLD_REGEX, HTML_LC_MENTION_REGEX, HTML_NER_IGNORE_REGEX, HTML_NER_REPLACE_REGEX } from '../constants/regex';
import { escapeHTML, unescapeHTML } from './emoji';
export const convertTextToHTML = text => {
  const element = document.createElement('div');
  element.style.position = 'absolute';
  element.style.opacity = '0';
  element.contentEditable = 'true';
  element.innerText = text;
  document.body.appendChild(element);
  let result = element.innerHTML;
  document.body.removeChild(element);
  result = unescapeHTML(result);
  result = result.replace(HTML_A_TAG_REGEX, '$1').replace(BB_LC_MENTION_REGEX, '<lc_mention contenteditable="false" id="$1"><span>@</span>$2</lc_mention>​').replace(BB_NER_IGNORE_REGEX, '<nerIgnore contenteditable="false">$1</nerIgnore>').replace(BB_NER_REPLACE_REGEX, (_, prefix, type, value, entity) => {
    const prefixAttr = prefix ? `prefix="${prefix}" ` : '';
    return `<nerReplace contenteditable="false" ${prefixAttr}type="${type}" value="${value}">${entity}</nerReplace>`;
  });
  return result;
};
export const convertHTMLToText = text => {
  let result = text;
  result = result.replace(HTML_A_TAG_REGEX, '$1').replace(HTML_BOLD_REGEX, '[b]$1[/b]').replace(HTML_LC_MENTION_REGEX, '[lc_mention id="$1"]$2[/lc_mention]').replace(HTML_NER_IGNORE_REGEX, '[nerIgnore]$1[/nerIgnore]').replace(HTML_NER_REPLACE_REGEX, (_, prefix, type, value, entity) => {
    const prefixAttr = prefix ? `prefix="${prefix}" ` : '';
    return `[nerReplace ${prefixAttr}type="${type}" value="${value}"]${entity}[/nerReplace]`;
  });

  // eslint-disable-next-line no-irregular-whitespace
  result = result.replace(/​/g, '');
  result = escapeHTML(result);
  const element = document.createElement('div');
  element.style.position = 'absolute';
  element.style.opacity = '0';
  element.contentEditable = 'true';
  element.innerHTML = result;
  document.body.appendChild(element);
  result = element.innerText;
  document.body.removeChild(element);
  return result;
};
export const getElementTextLength = element => {
  let textLength = 0;
  try {
    textLength = convertHTMLToText(element.outerHTML).length;
  } catch (e) {
    // Do nothing
  }
  return textLength;
};
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