Standard (#71)

* Add and run standard

* standard --fix + tweaks

* new Buffer() -> Buffer.from()

* Split initialized {const,var} declarations into multiple statements

* != -> !== or == -> ===

* Return statement should not contain assignment

* Missing space

* Handle error

* Add TODO

README.md

@@ -5,6 +5,7 @@
 **Add a `'ttl'` (time-to-live) option to LevelUP for `put()` and `batch()`**
 
 [![Build Status](https://travis-ci.org/Level/level-ttl.svg?branch=master)](https://travis-ci.org/Level/level-ttl) [![Greenkeeper badge](https://badges.greenkeeper.io/Level/level-ttl.svg)](https://greenkeeper.io/)
+[![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)
 
 [![NPM](https://nodei.co/npm/level-ttl.png?downloads=true&downloadRank=true)](https://nodei.co/npm/level-ttl/)
 [![NPM](https://nodei.co/npm-dl/level-ttl.png?months=6&height=3)](https://nodei.co/npm/level-ttl/)

encoding.js

@@ -1,28 +1,28 @@
 exports.create = function createEncoding (options) {
   options || (options = {})
 
-  if (options.ttlEncoding)
-    return options.ttlEncoding
+  if (options.ttlEncoding) return options.ttlEncoding
 
-  const PATH_SEP    = options.separator
-      , INITIAL_SEP = options.sub ? '' : PATH_SEP
+  const PATH_SEP = options.separator
+  const INITIAL_SEP = options.sub ? '' : PATH_SEP
 
-  function encodeElement(e) {
+  function encodeElement (e) {
     // transform dates to timestamp strings
     return String(e instanceof Date ? +e : e)
   }
 
   return {
-      buffer : false
-    , encode : function (e) {
-        // TODO: reexamine this with respect to level-sublevel@6's native codecs
-        if (Array.isArray(e))
-          return new Buffer(INITIAL_SEP + e.map(encodeElement).join(PATH_SEP))
-        return new Buffer(encodeElement(e))
-      }
-    , decode : function (e) {
-        // TODO: detect and parse ttl records
-        return e.toString('utf8')
+    buffer: false,
+    encode: function (e) {
+      // TODO: reexamine this with respect to level-sublevel@6's native codecs
+      if (Array.isArray(e)) {
+        return Buffer.from(INITIAL_SEP + e.map(encodeElement).join(PATH_SEP))
       }
+      return Buffer.from(encodeElement(e))
+    },
+    decode: function (e) {
+      // TODO: detect and parse ttl records
+      return e.toString('utf8')
+    }
   }
 }