function validate( node ) {
		if ( isExportStatement( node ) ) {
			if (
				!isVariableOrFunction( node.right ) &&
				!isStaticObject( node.right )
			) {
				report( node );
			}
		}
	}
Checks whether only variables and functions are assigned to `module.exports`.

@private
@param {ASTNode} node - node to examine