Balanced Parentheses Validator

Edit the code in the box below, or replace it with any code you like.

• Mostly written for LISP (a language I do not know), but also handles square and curly braces
• Will ignore LISP comments (lines starting with ';')
• Should ignore brackets in LISP string literals (double quotes only), accounting for escaped double quote characters
• The GitHub repo: https://github.com/danielpickett/parentheses-checker
• The main function:
  

  const hasBalancedBrackets = (str) => {
    str = str.replace(/;.*/, '')
    const stack = []
    const map = {
      '(': ')',
      '[': ']',
      '{': '}',
    }
    let isInQuote = false
  
    for (let i = 0; i < str.length; i++) {
      const char = str[i]
      if (char === '"' && str[i - 1] !== '\\') isInQuote = !isInQuote
      if (char in map && !isInQuote) stack.push(char)
      else if (Object.values(map).indexOf(char) > -1 && !isInQuote) {
        if (char === map[stack.slice(-1)]) stack.pop()
        else return false
      }
    }
  
    return stack.length !== 0 ? false : true
  }