replace electron-rebuild with electron-builder

.gitignore

@@ -1,3 +1,4 @@
 node_modules
 mydb-*
 _pouch_mydb-sqlite
+dist

README.md

@@ -28,11 +28,17 @@ And run:
 
     npm start
 
+Build:
+
+    npm run build
+
 If it doesn't work, you might not have the latest version of Node/npm. Try installing the latest using [nvm](https://github.com/creationix/nvm).
 
 ## Browser vs Node
 
-In order to get LevelDB to work propertly, we use [electron-rebuild](https://github.com/electron/electron-rebuild) to rebuild LevelDB for Electron.
+To build the application we use [electron-builder](https://github.com/electron-userland/electron-builder). You'll be able to build the app for macOS/Linux/Windows, but it must be compiled on the target platform. 
+
+In order to get the native dependencies (LevelDB and sqlite3) to work properly with the Electron version, we include the script `"postinstall": "electron-builder install-app-deps"`.
 
 If this step doesn't work for you (e.g. because you are using an older version of Node, you're using Windows, etc.), you can remove the `postinstall` script from `package.json`, replace the `pouchdb` dependency with `pouchdb-browser`, and just use the browser adapters (IndexedDB/WebSQL) rather than the Node.js adapter (LevelDB).
 

package.json

@@ -5,14 +5,16 @@
   "main": "main.js",
   "scripts": {
     "start": "electron .",
-    "postinstall": "electron-rebuild"
+    "build": "electron-builder build",
+    "postinstall": "electron-builder install-app-deps"
   },
   "devDependencies": {
-    "electron": "^1.4.12",
-    "electron-rebuild": "^1.4.0"
+    "electron": "^3.0.0",
+    "electron-builder": "^20.38.3"
   },
   "dependencies": {
-    "pouchdb": "^6.1.0",
-    "pouchdb-adapter-node-websql": "^6.1.0"
+    "pouchdb": "^7.0.0",
+    "pouchdb-adapter-node-websql": "^7.0.0",
+    "pouchdb-adapter-websql": "^7.0.0"
   }
 }

script.js

@@ -16,6 +16,7 @@ db.info().then(function (info) {
 
 // WebSQL
 
+PouchDB.plugin(require('pouchdb-adapter-websql'));
 var websqlDB = new PouchDB('mydb-websql', {adapter: 'websql'});
 
 websqlDB.info().then(function (info) {
@@ -24,11 +25,19 @@ websqlDB.info().then(function (info) {
   $('#websql').innerHTML = 'Error for WebSQL';
 });
 
+// File paths for LevelDB and node-websql
+
+var {remote} = require('electron');
+var path = require('path');
+
+var leveldbPath = path.join(remote.app.getPath('userData'), 'mydb-leveldb');
+var sqlitePath = path.join(remote.app.getPath('userData'), 'mydb-sqlite');
+
 // LevelDB
 
 var NodePouchDB = require('pouchdb');
 
-var leveldbDB = new NodePouchDB('mydb-leveldb');
+var leveldbDB = new NodePouchDB(leveldbPath);
 
 leveldbDB.info().then(function (info) {
   $('#leveldb').innerHTML = '✔ We can use PouchDB with LevelDB!';
@@ -39,7 +48,7 @@ leveldbDB.info().then(function (info) {
 // node-websql
 
 NodePouchDB.plugin(require('pouchdb-adapter-node-websql'));
-var sqliteDB = new NodePouchDB('mydb-sqlite', {adapter: 'websql'});
+var sqliteDB = new NodePouchDB(sqlitePath, {adapter: 'websql'});
 
 sqliteDB.info().then(function (info) {
   $('#sqlitedb').innerHTML = '✔ We can use PouchDB with node-websql (SQLite)!';