Array.pop() cant be undefined after if check, but typescript doenst know.

Hi, i have this snipped in my code:

if (x.length > 1) {
  let entry = x.pop();
  this.setSelected(0);
}

if (x.length > 1) {
  let entry = x.pop();
  this.setSelected(0);
}

x is of type Entry[] And pop returns Entry | undefined My question is: How can i tell typescript that it can not be the undefined branch?

Solution:

as Entry does the job

3 Replies

nathanoy•5mo ago

Solution

nathanoy•5mo ago

as Entry does the job

nathanoy•5mo ago

nvm then. Sorry