fix(base-driver): allow subclass to define shape of settings object

The mixin approach prevented subclasses of BaseDriver from narrowing the type of `this.settings`.  Now, that's possible.

Also:
- removed an unused type argument from BD constructor
- and did some typedef aliasing
- remove unneeded type assertion from log mixin

packages/base-driver/lib/basedriver/commands/index.ts

@@ -1,6 +1,5 @@
 import './event';
 import './find';
 import './log';
-import './settings';
 import './timeout';
 import './execute';

packages/base-driver/lib/basedriver/commands/log.ts

@@ -1,6 +1,6 @@
-import {Constraints, Driver, ILogCommands, LogDefRecord} from '@appium/types';
+import type {Constraints, Driver, ILogCommands} from '@appium/types';
 import _ from 'lodash';
-import {BaseDriver} from '../driver';
+import type {BaseDriver} from '../driver';
 import {mixin} from './mixin';
 
 declare module '../driver' {
@@ -9,7 +9,7 @@ declare module '../driver' {
 }
 
 const LogCommands: ILogCommands = {
-  supportedLogTypes: <LogDefRecord>{},
+  supportedLogTypes: {},
 
   async getLogTypes<C extends Constraints>(this: BaseDriver<C>) {
     this.log.debug('Retrieving supported log types');

packages/base-driver/lib/basedriver/device-settings.js

@@ -9,7 +9,7 @@ import {errors} from '../protocol/errors';
 export const MAX_SETTINGS_SIZE = 20 * 1024 * 1024; // 20 MB
 
 /**
- * @template {import('@appium/types').StringRecord} T
+ * @template {StringRecord} T
  * @implements {IDeviceSettings<T>}
  */
 export class DeviceSettings {
@@ -74,6 +74,10 @@ export class DeviceSettings {
 export default DeviceSettings;
 
 /**
- * @template {import('@appium/types').StringRecord} [T=import('@appium/types').StringRecord]
+ * @typedef {import('@appium/types').StringRecord} StringRecord
+ */
+
+/**
+ * @template {StringRecord} [T=StringRecord]
  * @typedef {import('@appium/types').IDeviceSettings<T>} IDeviceSettings
  */

packages/base-driver/lib/basedriver/driver.ts

@@ -33,11 +33,10 @@ const ON_UNEXPECTED_SHUTDOWN_EVENT = 'onUnexpectedShutdown';
 export class BaseDriver<
     C extends Constraints,
     CArgs extends StringRecord = StringRecord,
-    Settings extends StringRecord = StringRecord,
-    SessionData extends StringRecord = StringRecord
+    Settings extends StringRecord = StringRecord
   >
   extends DriverCore<C, Settings>
-  implements Driver<C, CArgs>
+  implements Driver<C, CArgs, Settings>
 {
   cliArgs: CArgs & ServerArgs;
 
@@ -380,6 +379,20 @@ export class BaseDriver<
 
     return true;
   }
+
+  async updateSettings(newSettings: Settings) {
+    if (!this.settings) {
+      this.log.errorAndThrow('Cannot update settings; settings object not found');
+    }
+    return await this.settings.update(newSettings);
+  }
+
+  async getSettings() {
+    if (!this.settings) {
+      this.log.errorAndThrow('Cannot get settings; settings object not found');
+    }
+    return this.settings.getSettings();
+  }
 }
 
 export * from './commands';