October 21, 2024
Chicago 12, Melborne City, USA
javascript

Check that a function doesn't use closure in JavaScript


In JavaScript, functions can’t be serialized because they close over their parent environment. Is there any way to check/enforce that a function doesn’t use variables from its parent environment?

E.g. something like:


function sum(a, b) {
   return a + b;
}

const greeting = "hello";
function greet() {
   console.log(greeting);
}

usesClosure(sum); // false
usesClosure(greet); // true



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