lint/src/utils/getIndicesOf.ts

export const getIndicesOf = (
  searchStr: string,
  str: string,
  caseSensitive: boolean = true
) => {
  const searchStrLen = searchStr.length
  if (searchStrLen === 0) {
    return []
  }

  let startIndex = 0,
    index,
    indices = []

  if (!caseSensitive) {
    str = str.toLowerCase()
    searchStr = searchStr.toLowerCase()
  }

  while ((index = str.indexOf(searchStr, startIndex)) > -1) {
    indices.push(index)
    startIndex = index + searchStrLen
  }

  return indices
}