import { removeDuplicates } from "../utilities/remove-duplicates.js";
function simplifyChangedRanges(changes) {
  const uniqueChanges = removeDuplicates(changes);
  return uniqueChanges.length === 1 ? uniqueChanges : uniqueChanges.filter((change, index) => {
    const rest = uniqueChanges.filter((_, i) => i !== index);
    return !rest.some((otherChange) => {
      return change.oldRange.from >= otherChange.oldRange.from && change.oldRange.to <= otherChange.oldRange.to && change.newRange.from >= otherChange.newRange.from && change.newRange.to <= otherChange.newRange.to;
    });
  });
}
function getChangedRanges(transform) {
  const { mapping, steps } = transform;
  const changes = [];
  mapping.maps.forEach((stepMap, index) => {
    const ranges = [];
    if (!stepMap.ranges.length) {
      const { from, to } = steps[index];
      if (from === void 0 || to === void 0) {
        return;
      }
      ranges.push({ from, to });
    } else {
      stepMap.forEach((from, to) => {
        ranges.push({ from, to });
      });
    }
    ranges.forEach(({ from, to }) => {
      const newStart = mapping.slice(index).map(from, -1);
      const newEnd = mapping.slice(index).map(to);
      const oldStart = mapping.invert().map(newStart, -1);
      const oldEnd = mapping.invert().map(newEnd);
      changes.push({
        oldRange: {
          from: oldStart,
          to: oldEnd
        },
        newRange: {
          from: newStart,
          to: newEnd
        }
      });
    });
  });
  return simplifyChangedRanges(changes);
}
export {
  getChangedRanges
};
//# sourceMappingURL=get-changed-ranges.js.map
