Extract sequelize logic into subclass

packages/keyv-sqlite/package.json

@@ -38,7 +38,7 @@
   },
   "homepage": "https://github.com/lukechilds/keyv-sqlite",
   "dependencies": {
-    "sequelize": "^4.4.2",
+    "keyv-sequelize": "0.0.0",
     "sqlite3": "^3.1.8"
   },
   "devDependencies": {

packages/keyv-sqlite/src/index.js

@@ -1,71 +1,21 @@
 'use strict';
 
-const EventEmitter = require('events');
-const Sequelize = require('sequelize');
+const KeyvSequelize = require('keyv-sequelize');
 
-class KeyvSqlite extends EventEmitter {
+class KeyvSqlite extends KeyvSequelize {
 	constructor(opts) {
-		super();
-		this.ttlSupport = false;
 		opts = opts || {};
 		if (typeof opts === 'string') {
 			opts = { uri: opts };
 		}
-		this.opts = Object.assign({
+		opts = Object.assign({
+			dialect: 'sqlite',
 			uri: 'sqlite://:memory:',
 			table: 'keyv',
 			logging: false
 		}, opts);
 
-		const sequelize = new Sequelize(this.opts.uri, this.opts);
-		this.Entry = sequelize.define(this.opts.table, {
-			key: {
-				primaryKey: true,
-				unique: true,
-				type: Sequelize.STRING
-			},
-			value: {
-				type: Sequelize.TEXT
-			}
-		}, {
-			timestamps: false
-		});
-
-		this.connected = sequelize.authenticate()
-			.then(() => sequelize.sync())
-			.catch(err => this.emit('error', err));
-	}
-
-	get(key) {
-		return this.connected
-			.then(() => this.Entry.findById(key))
-			.then(data => {
-				if (data === null) {
-					return undefined;
-				}
-				return data.get('value');
-			});
-	}
-
-	set(key, value) {
-		return this.connected
-			.then(() => this.Entry.upsert({ key, value }));
-	}
-
-	delete(key) {
-		return this.connected
-			.then(() => this.Entry.destroy({ where: { key } }))
-			.then(items => items > 0);
-	}
-
-	clear() {
-		return this.connected
-			.then(() => this.Entry.destroy({
-				where: {
-					key: { $like: `${this.namespace}:%` }
-				}
-			}))
-			.then(() => undefined);
+		super(opts);
 	}
 }