diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 0000000..b635e6f
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,5 @@
+{
+    "bracketSpacing": false,
+    "semi": true,
+    "singleQuote": true
+}
diff --git a/js/apple1.ts b/js/apple1.ts
index 65cba61..40c1573 100644
--- a/js/apple1.ts
+++ b/js/apple1.ts
@@ -12,11 +12,11 @@
 import MicroModal from 'micromodal';
 
 import Apple1IO from './apple1io';
-import { CPU6502, word, byte } from '@whscullin/cpu6502';
+import {CPU6502, word, byte} from '@whscullin/cpu6502';
 import Prefs from './prefs';
 import RAM from './ram';
-import { TextPage } from './canvas1';
-import { debug, hup } from './util';
+import {TextPage} from './canvas1';
+import {debug, hup} from './util';
 
 import Basic from './roms/basic';
 import Bios from './roms/bios';
@@ -24,7 +24,7 @@ import Krusader from './roms/krusader';
 
 import ACI from './cards/aci';
 
-import { mapKeyEvent, KeyBoard } from './ui/keyboard';
+import {mapKeyEvent, KeyBoard} from './ui/keyboard';
 
 // eslint-disable-next-line prefer-const
 let DEBUG = false;
@@ -272,7 +272,8 @@ declare global {
 
 let _key: byte;
 function _keydown(evt: KeyboardEvent) {
-  const F1 = 112, F2 = 113;
+  const F1 = 112,
+    F2 = 113;
   if (evt.keyCode === F1) {
     cpu.reset();
   } else if (evt.keyCode === F2) {
diff --git a/js/apple1io.ts b/js/apple1io.ts
index a9d5db6..4a414f7 100644
--- a/js/apple1io.ts
+++ b/js/apple1io.ts
@@ -9,8 +9,8 @@
  * implied warranty.
  */
 
-import { TextPage } from './canvas1';
-import type { byte } from '@whscullin/cpu6502';
+import {TextPage} from './canvas1';
+import type {byte} from '@whscullin/cpu6502';
 
 const LOC = {
   KBD: 0x10,
diff --git a/js/base64.ts b/js/base64.ts
index cac518d..5db03f1 100644
--- a/js/base64.ts
+++ b/js/base64.ts
@@ -1,4 +1,4 @@
-import { memory } from '@whscullin/cpu6502';
+import {memory} from '@whscullin/cpu6502';
 
 const B64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
 
diff --git a/js/canvas1.ts b/js/canvas1.ts
index 1c8140b..3de909e 100644
--- a/js/canvas1.ts
+++ b/js/canvas1.ts
@@ -9,8 +9,8 @@
  * implied warranty.
  */
 
-import { charset } from './roms/apple1char';
-import type { byte } from '@whscullin/cpu6502';
+import {charset} from './roms/apple1char';
+import type {byte} from '@whscullin/cpu6502';
 
 /*
 0: A9 9 AA 20 EF FF E8 8A 4C 2 0
diff --git a/js/cards/aci.ts b/js/cards/aci.ts
index ee5ebe5..4403481 100644
--- a/js/cards/aci.ts
+++ b/js/cards/aci.ts
@@ -1,5 +1,5 @@
-import { CPU6502, byte } from '@whscullin/cpu6502';
-import { debug } from '../util';
+import {CPU6502, byte} from '@whscullin/cpu6502';
+import {debug} from '../util';
 
 // prettier-ignore
 const rom = [
diff --git a/js/entry1.js b/js/entry1.js
index 0f18cda..69799c4 100644
--- a/js/entry1.js
+++ b/js/entry1.js
@@ -1,3 +1,3 @@
-import * as Apple1 from "./apple1";
+import * as Apple1 from './apple1';
 
 window.Apple1 = Apple1;
diff --git a/js/ram.ts b/js/ram.ts
index b3ba3ac..a058cfa 100644
--- a/js/ram.ts
+++ b/js/ram.ts
@@ -9,9 +9,9 @@
  * implied warranty.
  */
 
-import { base64_decode, base64_encode } from './base64';
-import { allocMemPages } from './util';
-import type { byte, memory } from '@whscullin/cpu6502';
+import {base64_decode, base64_encode} from './base64';
+import {allocMemPages} from './util';
+import type {byte, memory} from '@whscullin/cpu6502';
 
 export interface RAMState {
   start: byte;
diff --git a/js/roms/basic.ts b/js/roms/basic.ts
index b518943..0a58a9c 100644
--- a/js/roms/basic.ts
+++ b/js/roms/basic.ts
@@ -1,4 +1,4 @@
-import { byte } from '@whscullin/cpu6502';
+import {byte} from '@whscullin/cpu6502';
 
 export default class Basic {
   ram = [
diff --git a/js/roms/bios.ts b/js/roms/bios.ts
index f5d41f5..2994fe7 100644
--- a/js/roms/bios.ts
+++ b/js/roms/bios.ts
@@ -1,4 +1,4 @@
-import { byte } from '@whscullin/cpu6502';
+import {byte} from '@whscullin/cpu6502';
 
 export default class Bios {
   rom = [
diff --git a/js/roms/enhanced-basic.ts b/js/roms/enhanced-basic.ts
index 76f4c57..f84b705 100644
--- a/js/roms/enhanced-basic.ts
+++ b/js/roms/enhanced-basic.ts
@@ -1,4 +1,4 @@
-import { byte } from '@whscullin/cpu6502';
+import {byte} from '@whscullin/cpu6502';
 
 export default class EnhancedBasic {
   rom = [
diff --git a/js/roms/krusader.ts b/js/roms/krusader.ts
index bfecab6..d3aefc1 100644
--- a/js/roms/krusader.ts
+++ b/js/roms/krusader.ts
@@ -1,4 +1,4 @@
-import { byte } from '@whscullin/cpu6502';
+import {byte} from '@whscullin/cpu6502';
 
 export default class Krusader {
   rom = [
diff --git a/js/symbols.ts b/js/symbols.ts
index 974731a..f407632 100644
--- a/js/symbols.ts
+++ b/js/symbols.ts
@@ -9,7 +9,7 @@
  * implied warranty.
  */
 
-import type { word } from '@whscullin/cpu6502';
+import type {word} from '@whscullin/cpu6502';
 
 export const SYMBOLS: Record<word, string> = {
   0xd010: 'KBD',
diff --git a/js/ui/keyboard.ts b/js/ui/keyboard.ts
index f8f7742..3f0f719 100644
--- a/js/ui/keyboard.ts
+++ b/js/ui/keyboard.ts
@@ -9,10 +9,10 @@
  * implied warranty.
  */
 
-import { CPU6502, byte } from '@whscullin/cpu6502';
-import { debug, toHex } from '../util';
+import {CPU6502, byte} from '@whscullin/cpu6502';
+import {debug, toHex} from '../util';
 import Apple1IO from 'js/apple1io';
-import { TextPage } from 'js/canvas1';
+import {TextPage} from 'js/canvas1';
 
 // keycode: [plain, cntl, shift]
 
diff --git a/js/util.ts b/js/util.ts
index 82518a3..461ab61 100644
--- a/js/util.ts
+++ b/js/util.ts
@@ -9,7 +9,7 @@
  * implied warranty.
  */
 
-import { byte, word } from '@whscullin/cpu6502';
+import {byte, word} from '@whscullin/cpu6502';
 
 const hex_digits = '0123456789ABCDEF';
 const bin_digits = '01';
diff --git a/package.json b/package.json
index 8d2af44..2e73de1 100644
--- a/package.json
+++ b/package.json
@@ -7,6 +7,7 @@
     "build": "webpack --mode=production",
     "dev": "webpack-dev-server",
     "lint": "eslint js",
+    "lint-fix": "eslint --fix js",
     "start": "webpack-dev-server",
     "test": "jest"
   },