task24.js

function checkIsSameTree(treeA, treeB) {
    function serializeTree(tree) {
        let retorno = '' + tree.value
        if ( tree.left !== null ) retorno += 'L' + serializeTree(tree.left)
        if ( tree.right !== null ) retorno += 'R' + serializeTree(tree.right)
        return retorno
    }
    return ( serializeTree(treeA) === serializeTree(treeB) ? true : false )
}

const tree = {
    value: 1,
    left: { value: 2, left: null, right: null },
    right: { value: 3, left: null, right: null }
  }

console.log(checkIsSameTree(tree, tree), ' // true')

const tree2 = {
value: 1,
left: { value: 3, left: { value: 2, left: null, right: null }, right: null },
right: { value: 5, left: null, right: { value: 4, left: null, right: null } }
}

console.log(checkIsSameTree(tree, tree2), ' // false')
console.log(checkIsSameTree(tree2, tree2), ' // true')