highlights string by keyword, split into pieces, keep character case

highlight.js

function highlightStr(name, query) {
  if (!query)
    return [
      {
        str: name,
        isHighlight: false
      }
    ];

  const queryRegx = new RegExp(query, "ig");
  const matches = name.match(queryRegx);

  if (!matches)
    return [
      {
        str: name,
        isHighlight: false
      }
    ];

  const textSplits = name.split(queryRegx).reduce((acc, item) => {
    item &&
      acc.result.push({
        str: item,
        isHighlight: false
      });
    matches[acc.matchIndex] &&
      acc.result.push({
        str: matches[acc.matchIndex],
        isHighlight: true
      });
    acc.matchIndex += 1;
    return acc;
  }, { result: [], matchIndex: 0 });

  return textSplits.result;
}

test('ABCDEFABKDEAbSB', 'ab')