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typescript-property-does-not-exist-on-union-type

Hungry Hoopoe answered on July 19, 2022 Popularity 8/10 Helpfulness 2/10

answer typescript-property-does-not-exist-on-union-type

typescript-property-does-not-exist-on-union-type

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type Fish = { swim: () => void };
type Bird = { fly: () => void };
 
function move(animal: Fish | Bird) {
  if ("swim" in animal) {
    return animal.swim();
  }
 
  return animal.fly();
}
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Popularity 8/10 Helpfulness 2/10 Language whatever

Source: www.typescriptlang.org

Tags: typescript union whatever

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Contributed on Jul 19 2022

Hungry Hoopoe

0 Answers Avg Quality 2/10

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