{
  components: {
    // component instance data, keyed by uri
    // components that have been removed from the page will be empty objects
    'domain.com/_components/some-component/instances/some-instance': { /* some data */ }
  },
  componentDefaults: {
    // default component data, used when creating new components
    'some-component': { /* some data */ }
  },
  page: {
    uri: 'domain.com/_pages/current-page',
    data: { /* page areas, layout, and customURL */ },
    state: {
      // this page's representation in the list (data that's sent to the page list)
      published: false,
      scheduled: false,
      createdAt: 0,
      publishTime: null,
      scheduledTime: null,
      siteSlug: 'some-site',
      title: '',
      updateTime: null,
      uri: 'domain.com/_pages/current-page',
      url: ''
    }
  },
  layout: {
    // this layout's representation in the layouts list
    published: false,
    scheduled: false,
    createTime: 'Wed May 23 2018 16:20:05 GMT-0400 (EDT)',
    publishTime: null,
    scheduleTime: null,
    siteSlug: 'some-site',
    title: '',
    updateTime: null,
    updateUser: null,
    uri: 'domain.com/_components/some-layout/instances/some-id'
  }
  user: {
    // currently logged-in user
    auth: 'write',
    imageUrl: 'avatar url',
    name: 'Name of User',
    provider: 'some-provider',
    username: 'some username or email'
  },
  // ui state management
  ui: {
    currentForm: { uri, path, data }, // currently opened form
    currentAddComponentModal: { currentURI, parentURI, path, available }, // current "add component" modal
    currentModal: { title, type, size, data }, // current "simple" modal
    currentConfirm: { title, text, button, onConfirm }, // current "confirmation" modal
    currentDrawer: null, // current drawer menu, both left and right drawers
    currentSelection: null, // currently selected component, gets uri
    currentFocus: { uri, path }, // currently focused field/group
    currentProgress: 0, // progress bar, gets random number (to prevent flashes)
    currentlySaving: false, // don't focus components while forms are saving, gets boolean
    metaKey: false, // set to true when meta key is pressed, enables additional functionality in kiln
    alerts: [], // array of alerts to display to the user
    snackbar: null // current (or previous) snackbar.
    // note: snackbars are created imperatively (settings this simply informs the toolbar to create a new snackbar),
    // so this won't always be the snackbar displayed (it will be either the one displayed or the previous one displayed)
  },
  // publishing validation
  validation: {
    // errors and warnings are arrays of { label, description, items },
    // with each item being { field, location, path, uri, preview }
    errors: [],
    warnings: []
  },
  // read-only
  schemas: {
    'some-component': { /* some schema, converted to kiln 5.x syntax */ }
  },
  locals: {
    components: ['list', 'of', 'all', 'components'],
    edit: 'true',
    params: { /* url params */ },
    query: { /* url query params */ },
    routes: ['/available', '/routes', '/in', '/current', '/site'],
    site: { /* config for current site */ },
    url: 'http://current-url',
    user: { /* current user data */ }
  },
  models: {
    'some-component': { /* object with save() and/or render() methods */ }
  },
  templates: {
    'some-component': () => {} // render function, precompiled handlebars template
  },
  site: { /* config for current site */ },
  allSites: {
    // configs for all sites in the current clay instance
    'slug': { /* config */ }
  },
  url: null,
  lists: {
    // data from `/_lists`, populated as needed
    isLoading: false,
    'new-pages': {
      error: null,
      isLoading: false,
      items: [ /* array of list items */ ]
    }
  },
  isLoading: true, // preloading has started
  undo: {
    atStart: true, // boolean if we're at the start of the history (no undo)
    atEnd: true, // boolean if we're at the end of the history (no redo)
    cursor: 0 // current snapshot the user is on. used to undo/redo non-destructively
  }
}