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/**

* @name Return statement outside function

* @description A 'return' statement appearing outside a function will cause an error

* when it is executed.

* @kind problem

* @problem.severity warning

* @id js/return-outside-function

* @tags reliability

* correctness

* @precision low

*/

import javascript

import semmle.javascript.RestrictedLocations

from ReturnStmt ret, TopLevel tl

where

tl = ret.getContainer() and

not tl instanceof EventHandlerCode and

not tl instanceof NodeModule

select ret.(FirstLineOf), "Return statement outside function."