typescript check type of variable
if (fooOrBar instanceof Foo){
// TypeScript now knows that `fooOrBar` is `Foo`
}typescript check type of variable
if (fooOrBar instanceof Foo){
// TypeScript now knows that `fooOrBar` is `Foo`
}typescript get type
if (typeof abc === "number") {
// do something
}Copyright © 2021 Codeinu
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