Matchingbrackets.js

function SearchingChallenge(str: string): string | number {
  const openers = ['(', '['];
  const closers = [')', ']'];
  const collection = [];
  let counter: number = 0;
  let isValid = true;


  [...str].forEach((char)=> {
    if(openers.includes(char)) {
      collection.push(char);
      counter++;
    }
    if(closers.includes(char)) {
      counter--;
    }    
    if(counter < 0) {
      isValid = false;
    }
  })
  
  return isValid ? `1 ${collection.length}` : 0;
}