diff --git a/examples/auto-markdown/index.js b/examples/auto-markdown/index.js
index c721b303e..c2c3f8c36 100644
--- a/examples/auto-markdown/index.js
+++ b/examples/auto-markdown/index.js
@@ -122,8 +122,7 @@ class AutoMarkdown extends React.Component {
 
   onSpace = (e, state) => {
     if (state.isExpanded) return
-    let { selection } = state
-    const { startText, startBlock, startOffset } = state
+    const { startBlock, startOffset } = state
     const chars = startBlock.text.slice(0, startOffset).replace(/\s*/g, '')
     const type = this.getType(chars)
 
diff --git a/examples/code-highlighting/index.js b/examples/code-highlighting/index.js
index 6377fb9c8..23a6ba833 100644
--- a/examples/code-highlighting/index.js
+++ b/examples/code-highlighting/index.js
@@ -1,5 +1,5 @@
 
-import { Editor, Mark, Raw, Selection } from '../..'
+import { Editor, Mark, Raw } from '../..'
 import Prism from 'prismjs'
 import React from 'react'
 import initialState from './state.json'
@@ -12,7 +12,7 @@ import initialState from './state.json'
  */
 
 function CodeBlock(props) {
-  const { attributes, children, editor, node } = props
+  const { editor, node } = props
   const language = node.data.get('language')
 
   function onChange(e) {
diff --git a/examples/development/performance-rich/index.js b/examples/development/performance-rich/index.js
index d9cb9fe4a..cb0da62d0 100644
--- a/examples/development/performance-rich/index.js
+++ b/examples/development/performance-rich/index.js
@@ -1,5 +1,5 @@
 
-import { Editor, Mark, Raw } from '../../..'
+import { Editor, Raw } from '../../..'
 import React from 'react'
 import initialState from './state.json'
 
diff --git a/examples/embeds/index.js b/examples/embeds/index.js
index 9a5515171..59ff80663 100644
--- a/examples/embeds/index.js
+++ b/examples/embeds/index.js
@@ -1,7 +1,6 @@
 
 import { Editor, Raw } from '../..'
 import React from 'react'
-import ReactDOM from 'react-dom'
 import Video from './video'
 import initialState from './state.json'
 
diff --git a/examples/embeds/video.js b/examples/embeds/video.js
index ae9b3ad07..4206771b1 100644
--- a/examples/embeds/video.js
+++ b/examples/embeds/video.js
@@ -17,7 +17,7 @@ class Video extends React.Component {
 
   onChange = (e) => {
     const video = e.target.value
-    const { node, state, editor } = this.props
+    const { node, editor } = this.props
     const properties = {
       data: { video }
     }
@@ -90,7 +90,7 @@ class Video extends React.Component {
           src={video}
           frameBorder="0"
           style={iframeStyle}
-        ></iframe>
+        />
       </div>
     )
   }
diff --git a/examples/emojis/index.js b/examples/emojis/index.js
index d8bd40fd2..48e3d69ea 100644
--- a/examples/emojis/index.js
+++ b/examples/emojis/index.js
@@ -1,11 +1,7 @@
 
-import { Editor, Mark, Raw } from '../..'
+import { Editor, Raw } from '../..'
 import React from 'react'
-import ReactDOM from 'react-dom'
 import initialState from './state.json'
-import isUrl from 'is-url'
-import { Map } from 'immutable'
-
 
 const EMOJIS = [
   '😃', '😬', '🍔'
diff --git a/examples/hovering-menu/index.js b/examples/hovering-menu/index.js
index 23d880d66..7f9ed51f7 100644
--- a/examples/hovering-menu/index.js
+++ b/examples/hovering-menu/index.js
@@ -1,5 +1,5 @@
 
-import { Editor, Mark, Raw } from '../..'
+import { Editor, Raw } from '../..'
 import Portal from 'react-portal'
 import React from 'react'
 import position from 'selection-position'
@@ -123,8 +123,6 @@ class HoveringMenu extends React.Component {
    */
 
   renderMenu = () => {
-    const { state } = this.state
-    const isOpen = state.isExpanded && state.isFocused
     return (
       <Portal isOpened onOpen={this.onOpen}>
         <div className="menu hover-menu">
diff --git a/examples/iframes/index.js b/examples/iframes/index.js
index 56278aadd..d50d050a3 100644
--- a/examples/iframes/index.js
+++ b/examples/iframes/index.js
@@ -1,8 +1,7 @@
 
-import { Editor, Mark, Raw } from '../..'
+import { Editor, Raw } from '../..'
 import Frame from 'react-frame-component'
 import React from 'react'
-import ReactDOM from 'react-dom'
 import initialState from './state.json'
 
 /**
@@ -176,7 +175,7 @@ class Iframes extends React.Component {
         rel="stylesheet"
         integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u"
         crossOrigin="anonymous"
-      ></link>
+      />
     )
 
     const style = {
@@ -233,7 +232,7 @@ class Iframes extends React.Component {
 
     return (
       <button className={className} onMouseDown={onMouseDown}>
-        <span className={`glyphicon glyphicon-${icon}`}></span>
+        <span className={`glyphicon glyphicon-${icon}`} />
       </button>
     )
   }
@@ -254,7 +253,7 @@ class Iframes extends React.Component {
 
     return (
       <button className={className} onMouseDown={onMouseDown}>
-        <span className={`glyphicon glyphicon-${icon}`}></span>
+        <span className={`glyphicon glyphicon-${icon}`} />
       </button>
     )
   }
diff --git a/examples/images/index.js b/examples/images/index.js
index 4463a5a48..b83e80da0 100644
--- a/examples/images/index.js
+++ b/examples/images/index.js
@@ -1,7 +1,6 @@
 
-import { Editor, Raw, Void } from '../..'
+import { Editor, Raw } from '../..'
 import React from 'react'
-import ReactDOM from 'react-dom'
 import initialState from './state.json'
 import isImage from 'is-image'
 import isUrl from 'is-url'
diff --git a/examples/links/index.js b/examples/links/index.js
index 670f3373b..7351bbe5f 100644
--- a/examples/links/index.js
+++ b/examples/links/index.js
@@ -1,10 +1,8 @@
 
-import { Editor, Mark, Raw } from '../..'
+import { Editor, Raw } from '../..'
 import React from 'react'
-import ReactDOM from 'react-dom'
 import initialState from './state.json'
 import isUrl from 'is-url'
-import { Map } from 'immutable'
 
 /**
  * Define a schema.
diff --git a/examples/rich-text/index.js b/examples/rich-text/index.js
index a7b7534cf..8cb50327c 100644
--- a/examples/rich-text/index.js
+++ b/examples/rich-text/index.js
@@ -1,5 +1,5 @@
 
-import { Editor, Mark, Raw } from '../..'
+import { Editor, Raw } from '../..'
 import React from 'react'
 import initialState from './state.json'
 
diff --git a/examples/rtl/index.js b/examples/rtl/index.js
index fb7380c4e..787d3243a 100644
--- a/examples/rtl/index.js
+++ b/examples/rtl/index.js
@@ -1,7 +1,6 @@
 
 import { Editor, Raw } from '../..'
 import React from 'react'
-import SoftBreak from 'slate-soft-break'
 import initialState from './state.json'
 
 /**
diff --git a/examples/tables/index.js b/examples/tables/index.js
index 18fa6c62c..bc006c5dc 100644
--- a/examples/tables/index.js
+++ b/examples/tables/index.js
@@ -2,7 +2,6 @@
 import { Editor, Raw } from '../..'
 import React from 'react'
 import initialState from './state.json'
-import keycode from 'keycode'
 
 /**
  * Define a schema.
diff --git a/src/components/content.js b/src/components/content.js
index f81326af4..794953445 100644
--- a/src/components/content.js
+++ b/src/components/content.js
@@ -8,7 +8,6 @@ import Selection from '../models/selection'
 import Transfer from '../utils/transfer'
 import TYPES from '../constants/types'
 import getWindow from 'get-window'
-import includes from 'lodash/includes'
 import keycode from 'keycode'
 import { IS_FIREFOX, IS_MAC } from '../constants/environment'
 
@@ -366,7 +365,6 @@ class Content extends React.Component {
 
     const window = getWindow(e.target)
     const { state } = this.props
-    const { selection } = state
     const { dataTransfer, x, y } = e.nativeEvent
     const transfer = new Transfer(dataTransfer)
     const data = transfer.getData()
@@ -425,7 +423,7 @@ class Content extends React.Component {
 
     // Get the selection point.
     const native = window.getSelection()
-    const { anchorNode, anchorOffset, focusOffset } = native
+    const { anchorNode, anchorOffset } = native
     const point = this.getPoint(anchorNode, anchorOffset)
     const { key, index, start, end } = point
 
diff --git a/src/components/editor.js b/src/components/editor.js
index 0aa7f529a..cba424b03 100644
--- a/src/components/editor.js
+++ b/src/components/editor.js
@@ -4,9 +4,6 @@ import CorePlugin from '../plugins/core'
 import Debug from 'debug'
 import React from 'react'
 import Schema from '../models/schema'
-import State from '../models/state'
-import isReactComponent from '../utils/is-react-component'
-import typeOf from 'type-of'
 
 /**
  * Debug.
diff --git a/src/components/node.js b/src/components/node.js
index 6ef5791fc..fd1edde1b 100644
--- a/src/components/node.js
+++ b/src/components/node.js
@@ -306,7 +306,7 @@ class Node extends React.Component {
     const ranges = node.getRanges(decorators)
     let offset = 0
 
-    const leaves = ranges.map((range, i, original) => {
+    const leaves = ranges.map((range, i) => {
       const leaf = this.renderLeaf(ranges, range, i, offset)
       offset += range.text.length
       return leaf
diff --git a/src/components/void.js b/src/components/void.js
index 22a610d5f..2ebbc233f 100644
--- a/src/components/void.js
+++ b/src/components/void.js
@@ -3,8 +3,6 @@ import Leaf from './leaf'
 import Mark from '../models/mark'
 import OffsetKey from '../utils/offset-key'
 import React from 'react'
-import ReactDOM from 'react-dom'
-import keycode from 'keycode'
 import { IS_FIREFOX } from '../constants/environment'
 
 /**
diff --git a/src/models/block.js b/src/models/block.js
index e22fc5aa9..a4560b541 100644
--- a/src/models/block.js
+++ b/src/models/block.js
@@ -15,7 +15,7 @@ import Inline from './inline'
 import Node from './node'
 import Text from './text'
 import uid from '../utils/uid'
-import Immutable, { Map, List, Record } from 'immutable'
+import { Map, List, Record } from 'immutable'
 
 /**
  * Default properties.
diff --git a/src/models/node.js b/src/models/node.js
index d192897ad..cba45b4e7 100644
--- a/src/models/node.js
+++ b/src/models/node.js
@@ -1,19 +1,14 @@
 
 import Block from './block'
 import Character from './character'
-import Data from './data'
 import Document from './document'
-import Inline from './inline'
 import Mark from './mark'
 import Normalize from '../utils/normalize'
-import Selection from './selection'
-import Text from './text'
 import direction from 'direction'
 import isInRange from '../utils/is-in-range'
-import includes from 'lodash/includes'
 import memoize from '../utils/memoize'
 import uid from '../utils/uid'
-import { List, Map, OrderedSet, Set } from 'immutable'
+import { List, Set } from 'immutable'
 
 
 /**
@@ -621,7 +616,6 @@ const Node = {
 
     // If the range is collapsed at the start of the node, check the previous.
     if (range.isCollapsed && startOffset == 0) {
-      const text = this.getDescendant(startKey)
       const previous = this.getPreviousText(startKey)
       if (!previous || !previous.length) return marks
       const char = previous.characters.get(previous.length - 1)
diff --git a/src/models/schema.js b/src/models/schema.js
index e81e38626..0bd18c549 100644
--- a/src/models/schema.js
+++ b/src/models/schema.js
@@ -2,7 +2,6 @@
 import React from 'react'
 import isReactComponent from '../utils/is-react-component'
 import typeOf from 'type-of'
-import memoize from '../utils/memoize'
 import { Record } from 'immutable'
 
 /**
diff --git a/src/models/selection.js b/src/models/selection.js
index c16e1be79..902e914c2 100644
--- a/src/models/selection.js
+++ b/src/models/selection.js
@@ -1,5 +1,4 @@
 
-import includes from 'lodash/includes'
 import memoize from '../utils/memoize'
 import { Record } from 'immutable'
 
@@ -288,7 +287,6 @@ class Selection extends new Record(DEFAULTS) {
 
   normalize(node) {
     let selection = this
-    const { isCollapsed } = selection
     let { anchorKey, anchorOffset, focusKey, focusOffset, isBackward } = selection
 
     // If the selection isn't formed yet or is malformed, ensure that it is
diff --git a/src/models/state.js b/src/models/state.js
index 6533f17af..20e9e4601 100644
--- a/src/models/state.js
+++ b/src/models/state.js
@@ -1,10 +1,8 @@
 
 
 import Document from './document'
-import Mark from './mark'
 import Selection from './selection'
 import Transform from './transform'
-import uid from '../utils/uid'
 import { Record, Set, Stack, List } from 'immutable'
 
 /**
diff --git a/src/models/text.js b/src/models/text.js
index b344c782e..dd3bca369 100644
--- a/src/models/text.js
+++ b/src/models/text.js
@@ -192,7 +192,6 @@ class Text extends new Record(DEFAULTS) {
    */
 
   getRanges(decorators = []) {
-    const node = this
     const list = new List()
     let characters = this.getDecorations(decorators)
 
diff --git a/src/models/transform.js b/src/models/transform.js
index 6fa0be12a..408e87b50 100644
--- a/src/models/transform.js
+++ b/src/models/transform.js
@@ -59,7 +59,7 @@ class Transform {
 
     let { state, operations } = transform
     let { history } = state
-    let { undos, redos } = history
+    let { undos } = history
     const previous = undos.peek()
 
     // If there are no operations, abort early.
diff --git a/src/plugins/core.js b/src/plugins/core.js
index d8fd690f4..102f5eba7 100644
--- a/src/plugins/core.js
+++ b/src/plugins/core.js
@@ -7,7 +7,6 @@ import React from 'react'
 import String from '../utils/string'
 import getWindow from 'get-window'
 import { IS_MAC } from '../constants/environment'
-import { default as defaultSchema } from './schema'
 
 /**
  * Debug.
diff --git a/src/serializers/html.js b/src/serializers/html.js
index 56980f528..e501de439 100644
--- a/src/serializers/html.js
+++ b/src/serializers/html.js
@@ -1,13 +1,7 @@
 
-import Block from '../models/block'
-import Document from '../models/document'
-import Inline from '../models/inline'
-import Mark from '../models/mark'
 import Raw from './raw'
 import React from 'react'
 import ReactDOMServer from 'react-dom/server'
-import State from '../models/state'
-import Text from '../models/text'
 import cheerio from 'cheerio'
 import typeOf from 'type-of'
 import { Record } from 'immutable'
diff --git a/src/transforms/apply-operation.js b/src/transforms/apply-operation.js
index 0736f3a70..b91723d2f 100644
--- a/src/transforms/apply-operation.js
+++ b/src/transforms/apply-operation.js
@@ -1,7 +1,5 @@
 
 import Debug from 'debug'
-import uid from '../utils/uid'
-import { default as defaultSchema } from '../plugins/schema'
 
 /**
  * Debug.
diff --git a/src/transforms/at-current-range.js b/src/transforms/at-current-range.js
index e7b78b43a..7780527e3 100644
--- a/src/transforms/at-current-range.js
+++ b/src/transforms/at-current-range.js
@@ -633,7 +633,7 @@ export function wrapInline(transform, properties) {
 
 export function wrapText(transform, prefix, suffix = prefix) {
   const { state } = transform
-  const { document, selection } = state
+  const { selection } = state
   const { anchorOffset, anchorKey, focusOffset, focusKey, isBackward } = selection
   let after
 
diff --git a/src/transforms/operations.js b/src/transforms/operations.js
index 0a46aac04..c231a4310 100644
--- a/src/transforms/operations.js
+++ b/src/transforms/operations.js
@@ -1,6 +1,5 @@
 
 import Normalize from '../utils/normalize'
-import uid from '../utils/uid'
 
 /**
  * Add mark to text at `offset` and `length` in node by `path`.
@@ -137,7 +136,6 @@ export function joinNodeOperation(transform, path, withPath) {
 
 export function moveNodeOperation(transform, path, newPath, newIndex) {
   const { state } = transform
-  const { document } = state
   const parentPath = path.slice(0, -1)
   const parentIndex = path[path.length - 1]
   const inversePath = newPath.slice().concat([newIndex])
diff --git a/src/utils/is-in-range.js b/src/utils/is-in-range.js
index 68aff21a7..4b4a57fa8 100644
--- a/src/utils/is-in-range.js
+++ b/src/utils/is-in-range.js
@@ -10,7 +10,6 @@
 
 function isInRange(index, text, range) {
   const { startKey, startOffset, endKey, endOffset } = range
-  let matcher
 
   if (text.key == startKey && text.key == endKey) {
     return startOffset <= index && index < endOffset