diff --git a/src/addon/messages/providers/mainmenu-handler.ts b/src/addon/messages/providers/mainmenu-handler.ts
index 33f22fbb7..a30ac88a4 100644
--- a/src/addon/messages/providers/mainmenu-handler.ts
+++ b/src/addon/messages/providers/mainmenu-handler.ts
@@ -14,7 +14,7 @@
 
 import { Injectable } from '@angular/core';
 import { AddonMessagesProvider } from './messages';
-import { CoreMainMenuDelegate, CoreMainMenuHandler, CoreMainMenuHandlerToDisplay } from '@core/mainmenu/providers/delegate';
+import { CoreMainMenuHandler, CoreMainMenuHandlerToDisplay } from '@core/mainmenu/providers/delegate';
 import { CoreCronHandler } from '@providers/cron';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreEventsProvider } from '@providers/events';
diff --git a/src/addon/mod/resource/providers/helper.ts b/src/addon/mod/resource/providers/helper.ts
index a9077b3d5..3eb43e727 100644
--- a/src/addon/mod/resource/providers/helper.ts
+++ b/src/addon/mod/resource/providers/helper.ts
@@ -17,15 +17,12 @@ import { CoreDomUtilsProvider } from '@providers/utils/dom';
 import { CoreCourseProvider } from '@core/course/providers/course';
 import { CoreCourseHelperProvider } from '@core/course/providers/helper';
 import { AddonModResourceProvider } from './resource';
-import { TranslateService } from '@ngx-translate/core';
 import { CoreSitesProvider } from '@providers/sites';
-import { CoreUtilsProvider } from '@providers/utils/utils';
 import { CoreFilepoolProvider } from '@providers/filepool';
 import { CoreFileProvider } from '@providers/file';
 import { CoreAppProvider } from '@providers/app';
 import { CoreMimetypeUtilsProvider } from '@providers/utils/mimetype';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
-import { CoreConstants } from '@core/constants';
 
 /**
  * Service that provides helper functions for resources.
@@ -43,8 +40,7 @@ export class AddonModResourceHelperProvider {
             private resourceProvider: AddonModResourceProvider, private courseHelper: CoreCourseHelperProvider,
             private textUtils: CoreTextUtilsProvider, private mimetypeUtils: CoreMimetypeUtilsProvider,
             private fileProvider: CoreFileProvider, private appProvider: CoreAppProvider,
-            private filepoolProvider: CoreFilepoolProvider, private utils: CoreUtilsProvider,
-            private sitesProvider: CoreSitesProvider, private translate: TranslateService) {
+            private filepoolProvider: CoreFilepoolProvider, private sitesProvider: CoreSitesProvider) {
     }
 
     /**
diff --git a/src/addon/userprofilefield/checkbox/component/checkbox.ts b/src/addon/userprofilefield/checkbox/component/checkbox.ts
index 998187701..de4a3392e 100644
--- a/src/addon/userprofilefield/checkbox/component/checkbox.ts
+++ b/src/addon/userprofilefield/checkbox/component/checkbox.ts
@@ -25,9 +25,9 @@ import { CoreUtilsProvider } from '@providers/utils/utils';
 })
 export class AddonUserProfileFieldCheckboxComponent implements OnInit {
     @Input() field: any; // The profile field to be rendered.
-    @Input() edit?: false; // True if editing the field. Defaults to false.
-    @Input() disabled?: false; // True if disabled. Defaults to false.
-    @Input() form?: FormGroup; // Form where to add the form control.
+    @Input() edit = false; // True if editing the field. Defaults to false.
+    @Input() disabled = false; // True if disabled. Defaults to false.
+    @Input() form: FormGroup; // Form where to add the form control.
 
     constructor(private fb: FormBuilder, protected utils: CoreUtilsProvider) { }
 
diff --git a/src/addon/userprofilefield/datetime/component/datetime.ts b/src/addon/userprofilefield/datetime/component/datetime.ts
index 1d43eaf80..cf72c309b 100644
--- a/src/addon/userprofilefield/datetime/component/datetime.ts
+++ b/src/addon/userprofilefield/datetime/component/datetime.ts
@@ -26,8 +26,8 @@ import { CoreUtilsProvider } from '@providers/utils/utils';
 })
 export class AddonUserProfileFieldDatetimeComponent implements OnInit {
     @Input() field: any; // The profile field to be rendered.
-    @Input() edit? = false; // True if editing the field. Defaults to false.
-    @Input() disabled? = false; // True if disabled. Defaults to false.
+    @Input() edit = false; // True if editing the field. Defaults to false.
+    @Input() disabled = false; // True if disabled. Defaults to false.
     @Input() form?: FormGroup; // Form where to add the form control.
 
     constructor(private fb: FormBuilder, private timeUtils: CoreTimeUtilsProvider, protected utils: CoreUtilsProvider) { }
diff --git a/src/addon/userprofilefield/menu/component/menu.ts b/src/addon/userprofilefield/menu/component/menu.ts
index b9e74c51a..338d40a33 100644
--- a/src/addon/userprofilefield/menu/component/menu.ts
+++ b/src/addon/userprofilefield/menu/component/menu.ts
@@ -24,8 +24,8 @@ import { FormGroup, FormBuilder, Validators } from '@angular/forms';
 })
 export class AddonUserProfileFieldMenuComponent implements OnInit {
     @Input() field: any; // The profile field to be rendered.
-    @Input() edit? = false; // True if editing the field. Defaults to false.
-    @Input() disabled? = false; // True if disabled. Defaults to false.
+    @Input() edit = false; // True if editing the field. Defaults to false.
+    @Input() disabled = false; // True if disabled. Defaults to false.
     @Input() form?: FormGroup; // Form where to add the form control.
 
     constructor(private fb: FormBuilder) { }
diff --git a/src/addon/userprofilefield/text/component/text.ts b/src/addon/userprofilefield/text/component/text.ts
index 84f1f44c1..c8ebd6b21 100644
--- a/src/addon/userprofilefield/text/component/text.ts
+++ b/src/addon/userprofilefield/text/component/text.ts
@@ -25,8 +25,8 @@ import { CoreUtilsProvider } from '@providers/utils/utils';
 })
 export class AddonUserProfileFieldTextComponent implements OnInit {
     @Input() field: any; // The profile field to be rendered.
-    @Input() edit? = false; // True if editing the field. Defaults to false.
-    @Input() disabled? = false; // True if disabled. Defaults to false.
+    @Input() edit = false; // True if editing the field. Defaults to false.
+    @Input() disabled = false; // True if disabled. Defaults to false.
     @Input() form?: FormGroup; // Form where to add the form control.
 
     constructor(private fb: FormBuilder, protected utils: CoreUtilsProvider) { }
diff --git a/src/addon/userprofilefield/textarea/component/textarea.ts b/src/addon/userprofilefield/textarea/component/textarea.ts
index efd1dae99..61b24b458 100644
--- a/src/addon/userprofilefield/textarea/component/textarea.ts
+++ b/src/addon/userprofilefield/textarea/component/textarea.ts
@@ -24,8 +24,8 @@ import { FormGroup, Validators, FormControl } from '@angular/forms';
 })
 export class AddonUserProfileFieldTextareaComponent implements OnInit {
     @Input() field: any; // The profile field to be rendered.
-    @Input() edit? = false; // True if editing the field. Defaults to false.
-    @Input() disabled? = false; // True if disabled. Defaults to false.
+    @Input() edit = false; // True if editing the field. Defaults to false.
+    @Input() disabled = false; // True if disabled. Defaults to false.
     @Input() form?: FormGroup; // Form where to add the form control.
 
     control: FormControl;
diff --git a/src/components/chrono/chrono.ts b/src/components/chrono/chrono.ts
index 885d62565..ca8757a41 100644
--- a/src/components/chrono/chrono.ts
+++ b/src/components/chrono/chrono.ts
@@ -32,7 +32,7 @@ import { Component, Input, OnChanges, OnDestroy, Output, EventEmitter, SimpleCha
 })
 export class CoreChronoComponent implements OnChanges, OnDestroy {
     @Input() running: boolean; // Set it to true to start the chrono. Set it to false to stop it.
-    @Input() startTime? = 0; // Number of milliseconds to put in the chrono before starting.
+    @Input() startTime = 0; // Number of milliseconds to put in the chrono before starting.
     @Input() endTime?: number; // Number of milliseconds to stop the chrono.
     @Input() reset?: boolean; // Set it to true to reset the chrono.
     @Output() onEnd?: EventEmitter<void>; // Will emit an event when the endTime is reached.
diff --git a/src/components/rich-text-editor/rich-text-editor.ts b/src/components/rich-text-editor/rich-text-editor.ts
index bf0e9c0ec..97a6a6530 100644
--- a/src/components/rich-text-editor/rich-text-editor.ts
+++ b/src/components/rich-text-editor/rich-text-editor.ts
@@ -40,7 +40,7 @@ export class CoreRichTextEditorComponent {
     // Based on: https://github.com/judgewest2000/Ionic3RichText/
     // @todo: Resize, images, anchor button, fullscreen...
 
-    @Input() placeholder? = ''; // Placeholder to set in textarea.
+    @Input() placeholder = ''; // Placeholder to set in textarea.
     @Input() control: FormControl; // Form control.
     @Output() contentChanged: EventEmitter<string>;
 
diff --git a/src/components/search-box/search-box.ts b/src/components/search-box/search-box.ts
index 2c5110b65..dabae223c 100644
--- a/src/components/search-box/search-box.ts
+++ b/src/components/search-box/search-box.ts
@@ -33,12 +33,12 @@ import { CoreUtilsProvider } from '@providers/utils/utils';
 export class CoreSearchBoxComponent implements OnInit {
     @Input() searchLabel?: string; // Label to be used on action button.
     @Input() placeholder?: string; // Placeholder text for search text input.
-    @Input() autocorrect? = 'on'; // Enables/disable Autocorrection on search text input.
+    @Input() autocorrect = 'on'; // Enables/disable Autocorrection on search text input.
     @Input() spellcheck?: string | boolean = true; // Enables/disable Spellchecker on search text input.
     @Input() autoFocus?: string | boolean; // Enables/disable Autofocus when entering view.
-    @Input() lengthCheck? = 3; // Check value length before submit. If 0, any string will be submitted.
-    @Input() showClear? = true; // Show/hide clear button.
-    @Input() disabled? = false; // Disables the input text.
+    @Input() lengthCheck = 3; // Check value length before submit. If 0, any string will be submitted.
+    @Input() showClear = true; // Show/hide clear button.
+    @Input() disabled = false; // Disables the input text.
     @Output() onSubmit: EventEmitter<string>; // Send data when submitting the search form.
     @Output() onClear?: EventEmitter<void>; // Send event when clearing the search form.
 
diff --git a/src/components/tabs/tab.ts b/src/components/tabs/tab.ts
index 95102e758..fe5ef6fc3 100644
--- a/src/components/tabs/tab.ts
+++ b/src/components/tabs/tab.ts
@@ -46,8 +46,8 @@ export class CoreTabComponent implements OnInit, OnDestroy {
     @Input() icon?: string; // The tab icon.
     @Input() badge?: string; // A badge to add in the tab.
     @Input() badgeStyle?: string; // The badge color.
-    @Input() enabled? = true; // Whether the tab is enabled.
-    @Input() show? = true; // Whether the tab should be shown.
+    @Input() enabled = true; // Whether the tab is enabled.
+    @Input() show = true; // Whether the tab should be shown.
     @Input() id?: string; // An ID to identify the tab.
     @Output() ionSelect: EventEmitter<CoreTabComponent> = new EventEmitter<CoreTabComponent>();
 
diff --git a/src/components/tabs/tabs.ts b/src/components/tabs/tabs.ts
index 9c9cee453..0734f63eb 100644
--- a/src/components/tabs/tabs.ts
+++ b/src/components/tabs/tabs.ts
@@ -242,15 +242,11 @@ export class CoreTabsComponent implements OnInit, AfterViewInit, OnChanges {
     protected sortTabs(): void {
         if (this.originalTabsContainer) {
             const newTabs = [];
-            let newSelected;
 
             this.tabs.forEach((tab, index) => {
                 const originalIndex = Array.prototype.indexOf.call(this.originalTabsContainer.children, tab.element);
                 if (originalIndex != -1) {
                     newTabs[originalIndex] = tab;
-                    if (this.selected == index) {
-                        newSelected = originalIndex;
-                    }
                 }
             });
 
diff --git a/src/core/emulator/providers/file-transfer.ts b/src/core/emulator/providers/file-transfer.ts
index 7adff60e3..f6a5db400 100644
--- a/src/core/emulator/providers/file-transfer.ts
+++ b/src/core/emulator/providers/file-transfer.ts
@@ -238,7 +238,6 @@ export class FileTransferObjectMock extends FileTransferObject {
             const basicAuthHeader = this.getBasicAuthHeader(url);
             let fileKey = null,
                 fileName = null,
-                mimeType = null,
                 params = null,
                 headers = null,
                 httpMethod = null;
@@ -254,7 +253,6 @@ export class FileTransferObjectMock extends FileTransferObject {
             if (options) {
                 fileKey = options.fileKey;
                 fileName = options.fileName;
-                mimeType = options.mimeType;
                 headers = options.headers;
                 httpMethod = options.httpMethod || 'POST';
 
diff --git a/src/core/mainmenu/pages/menu/menu.ts b/src/core/mainmenu/pages/menu/menu.ts
index 19476a899..dd5872b6c 100644
--- a/src/core/mainmenu/pages/menu/menu.ts
+++ b/src/core/mainmenu/pages/menu/menu.ts
@@ -14,7 +14,6 @@
 
 import { Component, OnDestroy, ViewChild } from '@angular/core';
 import { IonicPage, NavController, NavParams, Tabs } from 'ionic-angular';
-import { CoreEventsProvider } from '@providers/events';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreMainMenuProvider } from '../../providers/mainmenu';
 import { CoreMainMenuDelegate, CoreMainMenuHandlerData } from '../../providers/delegate';
@@ -66,7 +65,7 @@ export class CoreMainMenuPage implements OnDestroy {
     protected redirectPageLoaded = false;
 
     constructor(private menuDelegate: CoreMainMenuDelegate, private sitesProvider: CoreSitesProvider, navParams: NavParams,
-            private navCtrl: NavController, private eventsProvider: CoreEventsProvider) {
+            private navCtrl: NavController) {
         this.redirectPage = navParams.get('redirectPage');
         this.redirectParams = navParams.get('redirectParams');
     }
diff --git a/src/core/mainmenu/pages/more/more.ts b/src/core/mainmenu/pages/more/more.ts
index 8f36a3101..ce0e1ccfe 100644
--- a/src/core/mainmenu/pages/more/more.ts
+++ b/src/core/mainmenu/pages/more/more.ts
@@ -43,7 +43,7 @@ export class CoreMainMenuMorePage implements OnDestroy {
 
     constructor(private menuDelegate: CoreMainMenuDelegate, private sitesProvider: CoreSitesProvider,
             private navCtrl: NavController, private mainMenuProvider: CoreMainMenuProvider,
-            private eventsProvider: CoreEventsProvider) {
+            eventsProvider: CoreEventsProvider) {
 
         this.langObserver = eventsProvider.on(CoreEventsProvider.LANGUAGE_CHANGED, this.loadSiteInfo.bind(this));
         this.updateSiteObserver = eventsProvider.on(CoreEventsProvider.SITE_UPDATED, this.loadSiteInfo.bind(this),
diff --git a/src/directives/link.ts b/src/directives/link.ts
index 75c50b186..7165f82f7 100644
--- a/src/directives/link.ts
+++ b/src/directives/link.ts
@@ -30,7 +30,7 @@ import { CoreConfigConstants } from '../configconstants';
 export class CoreLinkDirective implements OnInit {
     @Input() capture?: boolean | string; // If the link needs to be captured by the app.
     @Input() inApp?: boolean | string; // True to open in embedded browser, false to open in system browser.
-    @Input() autoLogin?= 'check'; // If the link should be open with auto-login. Accepts the following values:
+    @Input() autoLogin = 'check'; // If the link should be open with auto-login. Accepts the following values:
                                   //   "yes" -> Always auto-login.
                                   //   "no" -> Never auto-login.
                                   //   "check" -> Auto-login only if it points to the current site. Default value.
diff --git a/src/providers/sites.ts b/src/providers/sites.ts
index 4b34327a9..53154c12a 100644
--- a/src/providers/sites.ts
+++ b/src/providers/sites.ts
@@ -21,7 +21,6 @@ import { CoreLoggerProvider } from './logger';
 import { CoreSitesFactoryProvider } from './sites-factory';
 import { CoreTextUtilsProvider } from './utils/text';
 import { CoreUrlUtilsProvider } from './utils/url';
-import { CoreUtilsProvider } from './utils/utils';
 import { CoreConstants } from '@core/constants';
 import { CoreConfigConstants } from '../configconstants';
 import { CoreSite } from '@classes/site';
@@ -211,9 +210,8 @@ export class CoreSitesProvider {
     protected siteTablesSchemas = []; // Schemas for site tables. Other providers can add schemas in here.
 
     constructor(logger: CoreLoggerProvider, private http: HttpClient, private sitesFactory: CoreSitesFactoryProvider,
-            private appProvider: CoreAppProvider, private utils: CoreUtilsProvider, private translate: TranslateService,
-            private eventsProvider: CoreEventsProvider, private urlUtils: CoreUrlUtilsProvider,
-            private textUtils: CoreTextUtilsProvider) {
+            private appProvider: CoreAppProvider, private translate: TranslateService, private urlUtils: CoreUrlUtilsProvider,
+            private eventsProvider: CoreEventsProvider,  private textUtils: CoreTextUtilsProvider) {
         this.logger = logger.getInstance('CoreSitesProvider');
 
         this.appDB = appProvider.getDB();
diff --git a/src/providers/utils/utils.ts b/src/providers/utils/utils.ts
index 40044549d..2c485ed85 100644
--- a/src/providers/utils/utils.ts
+++ b/src/providers/utils/utils.ts
@@ -14,7 +14,6 @@
 
 import { Injectable } from '@angular/core';
 import { Platform } from 'ionic-angular';
-import { Observable } from 'rxjs';
 import { InAppBrowser, InAppBrowserObject } from '@ionic-native/in-app-browser';
 import { Clipboard } from '@ionic-native/clipboard';
 import { CoreAppProvider } from '../app';
@@ -699,15 +698,6 @@ export class CoreUtilsProvider {
             options.location = 'no';
         }
 
-        // Convert the options to a string.
-        const optionsArray = [];
-        let optionsString;
-
-        for (const name in options) {
-            optionsArray.push(`${name}=${options[name]}`);
-        }
-        optionsString = optionsArray.join(',');
-
         this.iabInstance = this.iab.create(url, '_blank', options);
 
         if (this.appProvider.isDesktop() || this.appProvider.isMobile()) {
diff --git a/tslint.json b/tslint.json
index 54d006b00..e553d9a05 100644
--- a/tslint.json
+++ b/tslint.json
@@ -58,7 +58,6 @@
     "no-unused-variable": true,
     "no-var-keyword": true,
     "switch-default": true,
-    "typeof-compare": true,
     "use-isnan": true,
     "eofline": true,
     "indent": [true, "spaces", 4],