balancedBrackets leetcode

balancedBrackets.ts

function isValid(s:string ):boolean{
   interface matchingBrac{
      [key:string]:string}
    
    const open="{[(";
const close="}])"
 
 const  matchingBrackets:matchingBrac = {
   ')': '(',
    ']': '[',
     '}': '{'
    };
 
  const stack = [];
 for (const char of s) {
 if (open.includes(char)) {
 stack.push(char);
 } else if (close.includes(char)) {
 if (!stack.length) {
 return false;
 }
 if (stack[stack.length - 1] === matchingBrackets[char]) {
 stack.pop();
 } else {
 return false;
 }
 }
 }
 return stack.length === 0;


}