main

true when the current module is the entry point of the current process; false otherwise.

Equivalent to require.main === module in CommonJS.

Analogous to Python's __name__ == "__main__".

export function foo() {
  return 'Hello, world';
}

function main() {
  const message = foo();
  console.log(message);
}

if (import.meta.main) main();
// `foo` can be imported from another module without possible side-effects from `main`

Since

v24.2.0