switch from levelup to flat-file-db

/cc @mafintosh are there any concerns with doing this?

Author: mxstbr

.gitignore

@@ -1,3 +1,3 @@
-blog-views
+views
 node_modules
 .DS_STORE

README.md

@@ -9,7 +9,7 @@ With less than 50 lines of code this service is the smallest analytics you'll ev
 ## Built with
 
 - [`micro`](https://github.com/zeit/micro) to create the service.
-- [`level`](https://github.com/level/level) to store the data. (and [`then-levelup`](https://github.com/then/then-levelup) to promisify `level`)
+- [`flat-file-db`](https://github.com/mafintosh/flat-file-db) to store the data. (and [`promise`](https://github.com/then/promise) to promisify `flat-file-db`)
 
 ## Usage
 

db.js

@@ -0,0 +1,16 @@
+const flatfile = require('flat-file-db')
+const promise = require('promise')
+
+const db = flatfile.sync('views')
+
+module.exports = {
+  // Promisify async operations
+  put: promise.denodeify(db.put.bind(db)),
+  del: promise.denodeify(db.del.bind(db)),
+  clear: promise.denodeify(db.clear.bind(db)),
+
+  get: db.get.bind(db),
+  has: db.has.bind(db),
+  keys: db.keys.bind(db),
+  close: db.close.bind(db),
+}

index.js

@@ -1,12 +1,7 @@
 const url = require('url')
-const level = require('level')
-const then = require('then-levelup')
 const { send, createError, sendError } = require('micro')
 
-const db = then(level('blog-views', {
-  keyEncoding: 'json',
-  valueEncoding: 'json'
-}))
+const db = require('./db')
 
 module.exports = async function (req, res) {
   // Check that a page is provided
@@ -19,19 +14,19 @@ module.exports = async function (req, res) {
   }
   const shouldIncrement = query.inc !== 'false' && query.inc !== false
   try {
-    const { views } = await db.get(pathname)
-    // Add a view and send the total views back to the client
-    if (shouldIncrement) {
-      views.push({ time: Date.now() })
-      await db.put(pathname, { views })
-    }
-    if (req.method === 'GET') {
-      send(res, 200, { views: views.length })
+    if (db.has(pathname)) {
+      const { views } = await db.get(pathname)
+      // Add a view and send the total views back to the client
+      if (shouldIncrement) {
+        views.push({ time: Date.now() })
+        await db.put(pathname, { views })
+      }
+      if (req.method === 'GET') {
+        send(res, 200, { views: views.length })
+      } else {
+        send(res, 200)
+      }
     } else {
-      send(res, 200)
-    }
-  } catch (err) {
-    if (err.notFound) {
       // Initialise the page with one view
       if (shouldIncrement) {
         await db.put(pathname, { views: [{ time: Date.now() }] })
@@ -41,8 +36,9 @@ module.exports = async function (req, res) {
       } else {
         send(res, 200)
       }
-    } else {
-      throw createError(500, 'Internal server error.')
     }
+  } catch (err) {
+    console.log(err)
+    throw createError(500, 'Internal server error.')
   }
 }

package.json

@@ -10,10 +10,9 @@
   "author": "Max Stoiber <contact@mxstbr.com> (http://mxstbr.com/)",
   "license": "MIT",
   "dependencies": {
-    "level": "1.5.0",
-    "levelplus": "0.0.5",
+    "flat-file-db": "^1.0.0",
     "micro": "6.1.0",
-    "then-levelup": "1.0.2"
+    "promise": "^7.1.1"
   },
   "devDependencies": {},
   "execMap": {