Function isAnyPrecedingLevelLocked

app/core/utils.js:1010–1015

(levels, currentIndex)

}

const isAnyPrecedingLevelLocked = function (levels, currentIndex) {
  for (let i = 0, end = currentIndex, asc = end >= 0; asc ? i <= end : i >= end; asc ? i++ : i--) {
    if (isLocked(levels[i])) { return true }
  }
  return false
}

const findNextLevel = function (levels, currentIndex, needsPractice) {
  let index = currentIndex + 1