@atlaskit/editor-core/src/test-helper/matches.ts

A package contains Atlassian editor core functionality

export default (text: string, regexp: RegExp) => {
  const results: RegExpExecArray[] = [];
  let match: RegExpExecArray | null;
  while (match = regexp.exec(text)) {
    results.push(match);
  }
  return results;
};