function isUsedFromOutsideOf(scopeNode){/**
     * Checks whether a given reference is inside of the specified scope or not.
     *
     * @param {escope.Reference} reference - A reference to check.
     * @returns {boolean} `true` if the reference is inside of the specified
     *      scope.
     */function isOutsideOfScope(reference){var scope=scopeNode.range;var id=reference.identifier.range;return id[0]<scope[0]||id[1]>scope[1];}return function(variable){return variable.references.some(isOutsideOfScope);};}
Checks whether a given variable is used from outside of the specified scope.

@param {ASTNode} scopeNode - A scope node to check.
@returns {Function} The predicate function which checks whether a given
     variable is used from outside of the specified scope.