         # TODO(Constellation)
         # calculate precise offset or attach in
         # CoffeeScriptRedux compiler
+        notFound =
+            start: {line: 0, column: 0}
+            end: {line: 0, column: 0}
         structured = new StructuredCode(program.raw)
         estraverse.traverse program,
             leave: (node, parent) ->

                            start: node.declarations[0].loc.start
                            end: node.declarations[node.declarations.length - 1].loc.end
                        else
                            start: {line: 0, column: 0}
                            end: {line: 0, column: 0}
                return

module.exports = Instrumenter

                else
                    node.loc = switch node.type
                        when 'BlockStatement'
                            if node.body.length
                                start: node.body[0].loc.start
                                end: node.body[node.body.length - 1].loc.end
                            else
                                notFound
                        when 'VariableDeclarator'
                            if node?.init?.loc?
                                start: node.id.loc.start
