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nathanoy

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•Created by nathanoy on 5/6/2024 in #questions

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?

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