function test() {
 let a = 1;
 function test2() {
  let a //TDZ start
  efmw //TDZ
  oirkpo //TDZ
  wo,prd32k //TDZ
  cssp //TDZ
  console.log(a) //TDZ
  a = 10; //TDZ end
 }
 test2();
}
test();
// a is not defined