const extractHashtagsWithIndices = function()

in js/src/extractHashtagsWithIndices.js [11:53]

• 35 lines of code
• 9 McCabe index (conditional complexity)

const extractHashtagsWithIndices = function(text, options) {
  if (!options) {
    options = { checkUrlOverlap: true };
  }

  if (!text || !text.match(hashSigns)) {
    return [];
  }

  let tags = [];

  text.replace(validHashtag, function(match, before, hash, hashText, offset, chunk) {
    const after = chunk.slice(offset + match.length);
    if (after.match(endHashtagMatch)) {
      return;
    }
    const startPosition = offset + before.length;
    const endPosition = startPosition + hashText.length + 1;
    tags.push({
      hashtag: hashText,
      indices: [startPosition, endPosition]
    });
  });

  if (options.checkUrlOverlap) {
    // also extract URL entities
    const urls = extractUrlsWithIndices(text);
    if (urls.length > 0) {
      const entities = tags.concat(urls);
      // remove overlap
      removeOverlappingEntities(entities);
      // only push back hashtags
      tags = [];
      for (let i = 0; i < entities.length; i++) {
        if (entities[i].hashtag) {
          tags.push(entities[i]);
        }
      }
    }
  }

  return tags;
};