Added better-sqlite database driver, although we cannot use it for now

packages/lib/database-driver-better-sqlite.ts

@@ -0,0 +1,52 @@
+// This is a driver for better-sqlite3. It may be interesting to use it instead
+// of node-sqlite because it breaks all the time when we try to compile any app.
+// The performance improvement probably won't matter.
+//
+// The issue however is that better-sqlite3 uses the option SQLITE_DQS=0, which
+// disallows using double quotes around strings, and that's what we're using
+// everywhere. So the only way to make it work would be to do a custom
+// compilation, as described there, and set SQLITE_DQS=1:
+//
+// https://github.com/JoshuaWise/better-sqlite3/blob/master/docs/compilation.md
+
+const Database = require('better-sqlite3');
+
+interface Options {
+	name: string;
+}
+
+export default class DatabaseDriverBetterSqlite {
+
+	private db_: any = null;
+
+	public open(options: Options) {
+		this.db_ = new Database(options.name);
+	}
+
+	public sqliteErrorToJsError(error: any, sql: string = null, params: any[] = null) {
+		console.error(error.toString(), ' ---- ', sql, params);
+
+		const msg = [error.toString()];
+		if (sql) msg.push(sql);
+		if (params) msg.push(params);
+		const output: any = new Error(msg.join(': '));
+		if (error.code) output.code = error.code;
+		return output;
+	}
+
+	public async selectOne(sql: string, params: any[] = null) {
+		return this.db_.prepare(sql).get(params ? params : []);
+	}
+
+	public async selectAll(sql: string, params: any[] = null) {
+		return this.db_.prepare(sql).all(params ? params : []);
+	}
+
+	public async exec(sql: string, params: any[] = null) {
+		return this.db_.prepare(sql).run(params ? params : []);
+	}
+
+	lastInsertId() {
+		throw new Error('NOT IMPLEMENTED');
+	}
+}