old_contents: import React from "react";
  import { storiesOf } from "@kadira/storybook";
  import AddButton from "components/AddButton";
  import styled from "styled-components";
  import { darkBlue } from "constants/theme/colours";
  
  const Sidebar = styled.div`
    background: ${darkBlue};
    padding: 0.5em;
    max-width: 15em;
  `;
  
  storiesOf("AddButton", module)
    .addDecorator(story => <Sidebar>{story()}</Sidebar>)
    .add("Default", () => (
      <Sidebar>
        <AddButton editLabel="Group name">Add a group</AddButton>
      </Sidebar>
    ));
  
new_contents: import React from "react";
  import { storiesOf } from "@kadira/storybook";
  import AddButton from "components/AddButton";
  import styled from "styled-components";
  import { colors } from "constants/theme";
  
  const Sidebar = styled.div`
    background: ${colors.darkBlue};
    padding: 0.5em;
    max-width: 15em;
  `;
  
  storiesOf("AddButton", module)
    .addDecorator(story => <Sidebar>{story()}</Sidebar>)
    .add("Default", () =>
      <Sidebar>
        <AddButton editLabel="Group name">Add a group</AddButton>
      </Sidebar>
    );
  
subject: Fix compilation error when running yarn storybook.