text: module.exports = function check(str, bracketsConfig) {
    // your solution
    
     
      let brackets = bracketsConfig.join('').replace(/,/g, '');
          let stack = [];
      for (let bracket of str) {
              let bracketsIndex = brackets.indexOf(bracket)
  
              if (bracketsIndex % 2 === 0) {
                  
                  if (bracket === brackets[bracketsIndex + 1] && stack[stack.length - 1] === bracketsIndex){
                      stack.pop();
                  } else if (bracket === brackets[bracketsIndex + 1] && stack[stack.length - 1] !== bracketsIndex) {
                      stack.push(bracketsIndex)
                  }
                  else{
                      stack.push(bracketsIndex)
                  }
              } 
              else {
                  if (stack.pop() !== bracketsIndex-1){
                      return false;
                  }
              }
              
          }
          return stack.length === 0
      
  }
  