fixed websql typings dependency on window

src/driver/websql/WebsqlDriver.ts

@@ -12,6 +12,11 @@ import {DriverOptionNotSetError} from "../error/DriverOptionNotSetError";
 import {DataTransformationUtils} from "../../util/DataTransformationUtils";
 import {WebsqlQueryRunner} from "./WebsqlQueryRunner";
 
+/**
+ * Declare a global function that is only available in browsers that support WebSQL.
+ */
+declare function openDatabase(...params: any[]): any;
+
 /**
  * Organizes communication with WebSQL in the browser.
  */
@@ -76,7 +81,7 @@ export class WebsqlDriver implements Driver {
         }, this.options.extra || {});
 
         return new Promise<void>((ok, fail) => {
-            const connection = (window as any).openDatabase(
+            const connection = openDatabase(
                 options.database,
                 options.version,
                 options.description,

tsconfig.json

@@ -1,7 +1,7 @@
 {
     "version": "2.1.1",
     "compilerOptions": {
-        "lib": ["es5", "es6", "dom"],
+        "lib": ["es5", "es6"],
         "outDir": "build/compiled",
         "target": "es5",
         "module": "commonjs",