This is pretty common in codes of mine:

function doSomething() {
  if (!value) {
    throw new Error('Value is not set')
  }

 // ...
}

But that's quite exhausting and redundant to write. So one solution that I potentially found was using assert:

function doSomething() {
  assert(value, 'Value is not set')

 // ...
}

However, I never found assert associated with code implementation, but mostly only during debugging and testing contexts. Of course, at the end of the day assert is just a tool and we must use it if it makes our lives easier, but I am curious if it has any obscure something that using it in production is not advised.