client/src/utils/playUndo.js

   1 export function playMove(move, vr) {
   2   if (!Array.isArray(move)) move = [move];
   3   move.forEach(m => vr.play(m));
   4 }
   5
   6 export function undoMove(move, vr) {
   7   if (!Array.isArray(move)) move = [move];
   8   for (let i = move.length - 1; i >= 0; i--)
   9     vr.undo(move[i]);
  10 }
  11
  12 export function getFilteredMove(move) {
  13   if (!Array.isArray(move)) move = [move];
  14   const filtered_move = move.map(m => {
  15     return {
  16       appear: m.appear,
  17       vanish: m.vanish,
  18       start: m.start,
  19       end: m.end
  20     };
  21   });
  22   return filtered_move.length == 1 ? filtered_move[0] : filtered_move;
  23 }