diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..c9c91f9
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,3 @@
+coverage/
+f-ck.js
+f-ck.min.js
diff --git a/index.js b/index.js
index 5b7b7cc..c23d8fc 100644
--- a/index.js
+++ b/index.js
@@ -1,39 +1,41 @@
-'use strict';
+'use strict'
 
-var repeat = require('repeat-string');
+var repeat = require('repeat-string')
 
-module.exports = vowel;
+module.exports = vowel
 
-vowel.vowel = vowel;
-vowel.inner = inner;
-vowel.grawlix = grawlix;
+vowel.vowel = vowel
+vowel.inner = inner
+vowel.grawlix = grawlix
 
-var floor = Math.floor;
+var floor = Math.floor
 
-var DEFAULT = '*';
-var GRAWLIX = '@#$%!&?';
-var VOWELS = /[aeiouy]/g;
+var defaultCharacter = '*'
+var grawlixPattern = '@#$%!&?'
+var vowels = /[aeiouy]/g
 
 /* `butt` > `b*tt` */
 function vowel(value, character) {
-  return value.replace(VOWELS, character || DEFAULT);
+  return value.replace(vowels, character || defaultCharacter)
 }
 
 /* `butt` > `b**t` */
 function inner(value, character) {
   if (value.length <= 2) {
-    return value;
+    return value
   }
 
-  return value.charAt(0) +
-    repeat(character || DEFAULT, value.length - 2) +
-    value.charAt(value.length - 1);
+  return (
+    value.charAt(0) +
+    repeat(character || defaultCharacter, value.length - 2) +
+    value.charAt(value.length - 1)
+  )
 }
 
 /* `butt` > `@#$%` */
 function grawlix(value, pattern) {
-  var chars = pattern || GRAWLIX;
-  var length = typeof value === 'number' ? value : value.length;
-  var count = chars.length;
-  return repeat(chars, floor(length / count)) + chars.slice(0, length % count);
+  var chars = pattern || grawlixPattern
+  var length = typeof value === 'number' ? value : value.length
+  var count = chars.length
+  return repeat(chars, floor(length / count)) + chars.slice(0, length % count)
 }
diff --git a/package.json b/package.json
index 2814234..c6e7432 100644
--- a/package.json
+++ b/package.json
@@ -31,20 +31,20 @@
     "browserify": "^16.0.0",
     "esmangle": "^1.0.0",
     "nyc": "^11.0.0",
+    "prettier": "^1.12.1",
     "remark-cli": "^5.0.0",
     "remark-preset-wooorm": "^4.0.0",
     "tape": "^4.0.0",
     "xo": "^0.20.0"
   },
   "scripts": {
-    "build-md": "remark . -qfo",
+    "format": "remark . -qfo && prettier --write '**/*.js' && xo --fix",
     "build-bundle": "browserify index.js --bare -s fck > f-ck.js",
     "build-mangle": "esmangle f-ck.js > f-ck.min.js",
-    "build": "npm run build-md && npm run build-bundle && npm run build-mangle",
-    "lint": "xo",
-    "test-api": "node test.js",
+    "build": "npm run build-bundle && npm run build-mangle",
+    "test-api": "node test",
     "test-coverage": "nyc --reporter lcov tape test.js",
-    "test": "npm run build && npm run lint && npm run test-coverage"
+    "test": "npm run format && npm run build && npm run test-coverage"
   },
   "nyc": {
     "check-coverage": true,
@@ -52,8 +52,16 @@
     "functions": 100,
     "branches": 100
   },
+  "prettier": {
+    "tabWidth": 2,
+    "useTabs": false,
+    "singleQuote": true,
+    "bracketSpacing": false,
+    "semi": false,
+    "trailingComma": "none"
+  },
   "xo": {
-    "space": true,
+    "prettier": true,
     "esnext": false,
     "rules": {
       "no-var": "off",
diff --git a/readme.md b/readme.md
index b2821ae..c5b1b82 100644
--- a/readme.md
+++ b/readme.md
@@ -15,15 +15,15 @@ npm install f-ck
 ## Usage
 
 ```js
-var fck = require('f-ck');
+var fck = require('f-ck')
 
-console.log(fck('butt')); //=> 'b*tt'
-console.log(fck.vowel('butt')); //=> 'b*tt'
-console.log(fck.inner('butt')); //=> 'b**t'
-console.log(fck.grawlix('butt')); //=> '@#$%'
-console.log(fck.grawlix(7)); //=> '@#$%!&?'
+console.log(fck('butt')) // => 'b*tt'
+console.log(fck.vowel('butt')) // => 'b*tt'
+console.log(fck.inner('butt')) // => 'b**t'
+console.log(fck.grawlix('butt')) // => '@#$%'
+console.log(fck.grawlix(7)) // => '@#$%!&?'
 
-console.log(fck('butt', '-')); //=> 'b-tt'
+console.log(fck('butt', '-')) // => 'b-tt'
 ```
 
 ## API
diff --git a/test.js b/test.js
index cd91231..badb69d 100644
--- a/test.js
+++ b/test.js
@@ -1,41 +1,41 @@
-'use strict';
+'use strict'
 
-var test = require('tape');
-var fck = require('.');
+var test = require('tape')
+var fck = require('.')
 
-test('fck', function (t) {
-  t.test('.vowel', function (st) {
-    st.equal(fck.vowel('butt'), 'b*tt');
-    st.equal(fck.vowel('butt', '-'), 'b-tt');
-    st.end();
-  });
+test('fck', function(t) {
+  t.test('.vowel', function(st) {
+    st.equal(fck.vowel('butt'), 'b*tt')
+    st.equal(fck.vowel('butt', '-'), 'b-tt')
+    st.end()
+  })
 
-  t.test('.inner', function (st) {
-    st.equal(fck.inner('butt'), 'b**t');
-    st.equal(fck.inner('butt', '-'), 'b--t');
-    st.equal(fck.inner('but'), 'b*t');
-    st.equal(fck.inner('bu'), 'bu');
-    st.equal(fck.inner('b'), 'b');
-    st.equal(fck.inner(''), '');
-    st.end();
-  });
+  t.test('.inner', function(st) {
+    st.equal(fck.inner('butt'), 'b**t')
+    st.equal(fck.inner('butt', '-'), 'b--t')
+    st.equal(fck.inner('but'), 'b*t')
+    st.equal(fck.inner('bu'), 'bu')
+    st.equal(fck.inner('b'), 'b')
+    st.equal(fck.inner(''), '')
+    st.end()
+  })
 
-  t.test('.grawlix', function (st) {
-    st.equal(fck.grawlix('butt'), '@#$%');
-    st.equal(fck.grawlix(4), '@#$%');
-    st.equal(fck.grawlix('buttb'), '@#$%!');
-    st.equal(fck.grawlix('buttbu'), '@#$%!&');
-    st.equal(fck.grawlix('buttbut'), '@#$%!&?');
-    st.equal(fck.grawlix('buttbutt'), '@#$%!&?@');
-    st.equal(fck.grawlix('buttbuttb'), '@#$%!&?@#');
-    st.equal(fck.grawlix('but'), '@#$');
-    st.equal(fck.grawlix('bu'), '@#');
-    st.equal(fck.grawlix('b'), '@');
-    st.equal(fck.grawlix(''), '');
-    st.equal(fck.grawlix('butt', '*'), '****');
-    st.equal(fck.grawlix('butt', '123'), '1231');
-    st.end();
-  });
+  t.test('.grawlix', function(st) {
+    st.equal(fck.grawlix('butt'), '@#$%')
+    st.equal(fck.grawlix(4), '@#$%')
+    st.equal(fck.grawlix('buttb'), '@#$%!')
+    st.equal(fck.grawlix('buttbu'), '@#$%!&')
+    st.equal(fck.grawlix('buttbut'), '@#$%!&?')
+    st.equal(fck.grawlix('buttbutt'), '@#$%!&?@')
+    st.equal(fck.grawlix('buttbuttb'), '@#$%!&?@#')
+    st.equal(fck.grawlix('but'), '@#$')
+    st.equal(fck.grawlix('bu'), '@#')
+    st.equal(fck.grawlix('b'), '@')
+    st.equal(fck.grawlix(''), '')
+    st.equal(fck.grawlix('butt', '*'), '****')
+    st.equal(fck.grawlix('butt', '123'), '1231')
+    st.end()
+  })
 
-  t.end();
-});
+  t.end()
+})