strict null checks

.eslintrc.yml

@@ -92,3 +92,4 @@ rules:
   - error
   - single
   - allowTemplateLiterals: true
+  '@typescript-eslint/no-non-null-assertion': off

app/src/entry.ts

@@ -19,7 +19,7 @@ location.hash = ''
 ;(process as any).enablePromiseAPI = true
 
 if (process.platform === 'win32' && !('HOME' in process.env)) {
-    process.env.HOME = process.env.HOMEDRIVE + process.env.HOMEPATH
+    process.env.HOME = `${process.env.HOMEDRIVE}${process.env.HOMEPATH}`
 }
 
 if (isDev) {

app/src/plugins.ts

@@ -156,7 +156,9 @@ export async function findPlugins (): Promise<PluginInfo[]> {
         }
     }
 
-    (window as any).installedPlugins = foundPlugins
+    foundPlugins.sort((a, b) => a.name > b.name ? 1 : -1)
+
+    ;(window as any).installedPlugins = foundPlugins
     return foundPlugins
 }
 

terminus-community-color-schemes/package.json

 {
   "name": "terminus-community-color-schemes",
-  "version": "1.0.83-nightly.0",
+  "version": "1.0.92-nightly.0",
   "description": "Community color schemes for Terminus",
   "keywords": [
     "terminus-builtin-plugin"

terminus-core/package.json

 {
   "name": "terminus-core",
-  "version": "1.0.83-nightly.4",
+  "version": "1.0.92-nightly.0",
   "description": "Terminus core",
   "keywords": [
     "terminus-builtin-plugin"

terminus-core/src/api/tabRecovery.ts

@@ -34,5 +34,5 @@ export abstract class TabRecoveryProvider {
      * @returns [[RecoveredTab]] descriptor containing tab type and component inputs
      *          or `null` if this token is from a different tab type or is not supported
      */
-    abstract async recover (recoveryToken: any): Promise<RecoveredTab | null>
+    abstract async recover (recoveryToken: any): Promise<RecoveredTab|null>
 }

terminus-core/src/api/toolbarButtonProvider.ts

@@ -5,7 +5,7 @@ export interface ToolbarButton {
     /**
      * Raw SVG icon code
      */
-    icon: string
+    icon?: string
 
     title: string
 

terminus-core/src/components/appRoot.component.ts

@@ -144,7 +144,7 @@ export class AppRootComponent {
         config.changed$.subscribe(() => this.updateVibrancy())
         this.updateVibrancy()
 
-        let lastProgress = null
+        let lastProgress: number|null = null
         this.app.tabOpened$.subscribe(tab => {
             this.unsortedTabs.push(tab)
             tab.progress$.subscribe(progress => {
@@ -258,7 +258,7 @@ export class AppRootComponent {
             buttons = buttons.concat(provider.provide())
         })
         return buttons
-            .filter(button => button.weight > 0 === aboveZero)
+            .filter(button => (button.weight || 0) > 0 === aboveZero)
             .sort((a: ToolbarButton, b: ToolbarButton) => (a.weight || 0) - (b.weight || 0))
     }
 

terminus-core/src/components/baseTab.component.ts

@@ -36,7 +36,7 @@ export abstract class BaseTabComponent {
     /**
      * CSS color override for the tab's header
      */
-    color: string = null
+    color: string|null = null
 
     protected hasFocus = false
 
@@ -50,14 +50,14 @@ export abstract class BaseTabComponent {
     private titleChange = new Subject<string>()
     private focused = new Subject<void>()
     private blurred = new Subject<void>()
-    private progress = new Subject<number>()
+    private progress = new Subject<number|null>()
     private activity = new Subject<boolean>()
     private destroyed = new Subject<void>()
 
     get focused$ (): Observable<void> { return this.focused }
     get blurred$ (): Observable<void> { return this.blurred }
     get titleChange$ (): Observable<string> { return this.titleChange }
-    get progress$ (): Observable<number> { return this.progress }
+    get progress$ (): Observable<number|null> { return this.progress }
     get activity$ (): Observable<boolean> { return this.activity }
     get destroyed$ (): Observable<void> { return this.destroyed }
     get recoveryStateChangedHint$ (): Observable<void> { return this.recoveryStateChangedHint }
@@ -83,7 +83,7 @@ export abstract class BaseTabComponent {
      *
      * @param  {type} progress: value between 0 and 1, or `null` to remove
      */
-    setProgress (progress: number) {
+    setProgress (progress: number|null) {
         this.progress.next(progress)
         if (progress) {
             if (this.progressClearTimeout) {
@@ -125,7 +125,7 @@ export abstract class BaseTabComponent {
     /**
      * Override this to enable task completion notifications for the tab
      */
-    async getCurrentProcess (): Promise<BaseTabProcess> {
+    async getCurrentProcess (): Promise<BaseTabProcess|null> {
         return null
     }
 

terminus-core/src/components/splitTab.component.ts

@@ -33,8 +33,8 @@ export class SplitContainer {
     /**
      * @return Flat list of all tabs inside this container
      */
-    getAllTabs () {
-        let r = []
+    getAllTabs (): BaseTabComponent[] {
+        let r: BaseTabComponent[] = []
         for (const child of this.children) {
             if (child instanceof SplitContainer) {
                 r = r.concat(child.getAllTabs())
@@ -94,7 +94,7 @@ export class SplitContainer {
     }
 
     async serialize () {
-        const children = []
+        const children: any[] = []
         for (const child of this.children) {
             if (child instanceof SplitContainer) {
                 children.push(await child.serialize())
@@ -292,9 +292,9 @@ export class SplitTabComponent extends BaseTabComponent implements OnInit, OnDes
     /**
      * Inserts a new `tab` to the `side` of the `relative` tab
      */
-    addTab (tab: BaseTabComponent, relative: BaseTabComponent, side: SplitDirection) {
-        let target = this.getParentOf(relative) || this.root
-        let insertIndex = target.children.indexOf(relative)
+    addTab (tab: BaseTabComponent, relative: BaseTabComponent|null, side: SplitDirection) {
+        let target = (relative ? this.getParentOf(relative) : null) || this.root
+        let insertIndex = relative ? target.children.indexOf(relative) : -1
 
         if (
             target.orientation === 'v' && ['l', 'r'].includes(side) ||
@@ -302,7 +302,7 @@ export class SplitTabComponent extends BaseTabComponent implements OnInit, OnDes
         ) {
             const newContainer = new SplitContainer()
             newContainer.orientation = target.orientation === 'v' ? 'h' : 'v'
-            newContainer.children = [relative]
+            newContainer.children = relative ? [relative] : []
             newContainer.ratios = [1]
             target.children[insertIndex] = newContainer
             target = newContainer
@@ -333,6 +333,9 @@ export class SplitTabComponent extends BaseTabComponent implements OnInit, OnDes
 
     removeTab (tab: BaseTabComponent) {
         const parent = this.getParentOf(tab)
+        if (!parent) {
+            return
+        }
         const index = parent.children.indexOf(tab)
         parent.ratios.splice(index, 1)
         parent.children.splice(index, 1)
@@ -356,11 +359,18 @@ export class SplitTabComponent extends BaseTabComponent implements OnInit, OnDes
     navigate (dir: SplitDirection) {
         let rel: BaseTabComponent | SplitContainer = this.focusedTab
         let parent = this.getParentOf(rel)
+        if (!parent) {
+            return
+        }
+
         const orientation = ['l', 'r'].includes(dir) ? 'h' : 'v'
 
         while (parent !== this.root && parent.orientation !== orientation) {
             rel = parent
             parent = this.getParentOf(rel)
+            if (!parent) {
+                return
+            }
         }
 
         if (parent.orientation !== orientation) {
@@ -381,13 +391,15 @@ export class SplitTabComponent extends BaseTabComponent implements OnInit, OnDes
 
     async splitTab (tab: BaseTabComponent, dir: SplitDirection) {
         const newTab = await this.tabsService.duplicate(tab)
-        this.addTab(newTab, tab, dir)
+        if (newTab) {
+            this.addTab(newTab, tab, dir)
+        }
     }
 
     /**
      * @returns the immediate parent of `tab`
      */
-    getParentOf (tab: BaseTabComponent | SplitContainer, root?: SplitContainer): SplitContainer {
+    getParentOf (tab: BaseTabComponent | SplitContainer, root?: SplitContainer): SplitContainer|null {
         root = root || this.root
         for (const child of root.children) {
             if (child instanceof SplitContainer) {
@@ -414,8 +426,8 @@ export class SplitTabComponent extends BaseTabComponent implements OnInit, OnDes
     }
 
     /** @hidden */
-    async getCurrentProcess (): Promise<BaseTabProcess> {
-        return (await Promise.all(this.getAllTabs().map(x => x.getCurrentProcess()))).find(x => !!x)
+    async getCurrentProcess (): Promise<BaseTabProcess|null> {
+        return (await Promise.all(this.getAllTabs().map(x => x.getCurrentProcess()))).find(x => !!x) || null
     }
 
     /** @hidden */
@@ -443,8 +455,10 @@ export class SplitTabComponent extends BaseTabComponent implements OnInit, OnDes
 
     private detachTabView (tab: BaseTabComponent) {
         const ref = this.viewRefs.get(tab)
-        this.viewRefs.delete(tab)
-        this.viewContainer.remove(this.viewContainer.indexOf(ref))
+        if (ref) {
+            this.viewRefs.delete(tab)
+            this.viewContainer.remove(this.viewContainer.indexOf(ref))
+        }
     }
 
     private layout () {
@@ -471,7 +485,7 @@ export class SplitTabComponent extends BaseTabComponent implements OnInit, OnDes
             if (child instanceof SplitContainer) {
                 this.layoutInternal(child, childX, childY, childW, childH)
             } else {
-                const element = this.viewRefs.get(child).rootNodes[0]
+                const element = this.viewRefs.get(child)!.rootNodes[0]
                 element.style.position = 'absolute'
                 element.style.left = `${childX}%`
                 element.style.top = `${childY}%`
@@ -518,7 +532,7 @@ export class SplitTabComponent extends BaseTabComponent implements OnInit, OnDes
 /** @hidden */
 @Injectable()
 export class SplitTabRecoveryProvider extends TabRecoveryProvider {
-    async recover (recoveryToken: any): Promise<RecoveredTab> {
+    async recover (recoveryToken: any): Promise<RecoveredTab|null> {
         if (recoveryToken && recoveryToken.type === 'app:split-tab') {
             return {
                 type: SplitTabComponent,

terminus-core/src/components/splitTabSpanner.component.ts

@@ -67,13 +67,13 @@ export class SplitTabSpannerComponent {
                 this.container.x,
                 this.container.y + this.container.h * this.container.getOffsetRatio(this.index),
                 this.container.w,
-                null
+                0
             )
         } else {
             this.setDimensions(
                 this.container.x + this.container.w * this.container.getOffsetRatio(this.index),
                 this.container.y,
-                null,
+                0,
                 this.container.h
             )
         }
@@ -82,7 +82,7 @@ export class SplitTabSpannerComponent {
     private setDimensions (x: number, y: number, w: number, h: number) {
         this.cssLeft = `${x}%`
         this.cssTop = `${y}%`
-        this.cssWidth = w ? `${w}%` : null
-        this.cssHeight = h ? `${h}%` : null
+        this.cssWidth = w ? `${w}%` : 'initial'
+        this.cssHeight = h ? `${h}%` : 'initial'
     }
 }

terminus-core/src/components/tabHeader.component.ts

@@ -25,7 +25,7 @@ export class TabHeaderComponent {
     @Input() @HostBinding('class.active') active: boolean
     @Input() @HostBinding('class.has-activity') hasActivity: boolean
     @Input() tab: BaseTabComponent
-    @Input() progress: number
+    @Input() progress: number|null
     @ViewChild('handle') handle: ElementRef
 
     private constructor (
@@ -83,7 +83,7 @@ export class TabHeaderComponent {
             this.app.closeTab(this.tab, true)
         }
         if ($event.which === 3) {
-            event.preventDefault()
+            $event.preventDefault()
 
             const contextMenu = this.electron.remote.Menu.buildFromTemplate(await this.buildContextMenu())
 

terminus-core/src/components/windowControls.component.ts

@@ -12,6 +12,8 @@ export class WindowControlsComponent {
     constructor (public hostApp: HostAppService, public app: AppService) { }
 
     async closeWindow () {
-        await this.app.closeAllTabs() && this.hostApp.closeWindow()
+        if (await this.app.closeAllTabs()) {
+            this.hostApp.closeWindow()
+        }
     }
 }

terminus-core/src/services/app.service.ts

@@ -25,14 +25,14 @@ class CompletionObserver {
 
     async tick () {
         if (!await this.tab.getCurrentProcess()) {
-            this.done.next(null)
+            this.done.next()
             this.stop()
         }
     }
 
     stop () {
         clearInterval(this.interval)
-        this.destroyed.next(null)
+        this.destroyed.next()
         this.destroyed.complete()
         this.done.complete()
     }
@@ -144,7 +144,7 @@ export class AppService {
         if (this.tabs.includes(this._activeTab)) {
             this.lastTabIndex = this.tabs.indexOf(this._activeTab)
         } else {
-            this.lastTabIndex = null
+            this.lastTabIndex = 0
         }
         if (this._activeTab) {
             this._activeTab.clearActivity()
@@ -229,7 +229,7 @@ export class AppService {
 
     /** @hidden */
     emitReady () {
-        this.ready.next(null)
+        this.ready.next()
         this.ready.complete()
         this.hostApp.emitReady()
     }
@@ -246,7 +246,7 @@ export class AppService {
             })
             this.completionObservers.set(tab, observer)
         }
-        return this.completionObservers.get(tab).done$
+        return this.completionObservers.get(tab)!.done$
     }
 
     stopObservingTabCompletion (tab: BaseTabComponent) {

terminus-core/src/services/config.service.ts

@@ -95,7 +95,7 @@ export class ConfigService {
     private changed = new Subject<void>()
     private _store: any
     private defaults: any
-    private servicesCache: { [id: string]: Function[] } = null
+    private servicesCache: { [id: string]: Function[] }|null = null
 
     get changed$ (): Observable<void> { return this.changed }
 
@@ -170,7 +170,7 @@ export class ConfigService {
      *
      * @typeparam T Base provider type
      */
-    enabledServices<T> (services: T[]): T[] {
+    enabledServices<T extends object> (services: T[]): T[] {
         if (!this.servicesCache) {
             this.servicesCache = {}
             const ngModule = window['rootModule'].ngInjectorDef

terminus-core/src/services/hostApp.service.ts

@@ -215,7 +215,7 @@ export class HostAppService {
     setVibrancy (enable: boolean, type: string) {
         document.body.classList.toggle('vibrant', enable)
         if (this.platform === Platform.macOS) {
-            this.getWindow().setVibrancy(enable ? 'dark' : null)
+            this.getWindow().setVibrancy(enable ? 'dark' : null as any) // electron issue 20269
         }
         if (this.platform === Platform.Windows) {
             this.electron.ipcRenderer.send('window-set-vibrancy', enable, type)

terminus-core/src/services/hotkeys.service.ts

@@ -93,7 +93,7 @@ export class HotkeysService {
         return stringifyKeySequence(this.currentKeystrokes.map(x => x.event))
     }
 
-    getCurrentFullyMatchedHotkey (): string {
+    getCurrentFullyMatchedHotkey (): string|null {
         const currentStrokes = this.getCurrentKeystrokes()
         const config = this.getHotkeysConfig()
         for (const id in config) {
@@ -116,7 +116,7 @@ export class HotkeysService {
     getCurrentPartiallyMatchedHotkeys (): PartialHotkeyMatch[] {
         const currentStrokes = this.getCurrentKeystrokes()
         const config = this.getHotkeysConfig()
-        const result = []
+        const result: PartialHotkeyMatch[] = []
         for (const id in config) {
             for (const sequence of config[id]) {
                 for (let matchLength = Math.min(currentStrokes.length, sequence.length); matchLength > 0; matchLength--) {

terminus-core/src/services/hotkeys.util.ts

@@ -15,7 +15,7 @@ export function stringifyKeySequence (events: KeyboardEvent[]): string[] {
     events = events.slice()
 
     while (events.length > 0) {
-        const event = events.shift()
+        const event = events.shift()!
         if ((event as any).event === 'keydown') {
             const itemKeys: string[] = []
             if (event.ctrlKey) {

terminus-core/src/services/shellIntegration.service.ts

@@ -37,7 +37,7 @@ export class ShellIntegrationService {
                 'extras',
                 'automator-workflows',
             )
-            this.automatorWorkflowsDestination = path.join(process.env.HOME, 'Library', 'Services')
+            this.automatorWorkflowsDestination = path.join(process.env.HOME as string, 'Library', 'Services')
         }
         this.updatePaths()
     }

terminus-core/src/services/tabRecovery.service.ts

@@ -27,7 +27,7 @@ export class TabRecoveryService {
         )
     }
 
-    async recoverTab (token: any): Promise<RecoveredTab> {
+    async recoverTab (token: any): Promise<RecoveredTab|null> {
         for (const provider of this.config.enabledServices(this.tabRecoveryProviders)) {
             try {
                 const tab = await provider.recover(token)

terminus-core/src/services/tabs.service.ts

@@ -29,7 +29,7 @@ export class TabsService {
     /**
      * Duplicates an existing tab instance (using the tab recovery system)
      */
-    async duplicate (tab: BaseTabComponent): Promise<BaseTabComponent> {
+    async duplicate (tab: BaseTabComponent): Promise<BaseTabComponent|null> {
         const token = await tab.getRecoveryToken()
         if (!token) {
             return null

terminus-core/src/services/themes.service.ts

@@ -4,7 +4,7 @@ import { Theme } from '../api/theme'
 
 @Injectable({ providedIn: 'root' })
 export class ThemesService {
-    private styleElement: HTMLElement = null
+    private styleElement: HTMLElement|null = null
 
     /** @hidden */
     constructor (
@@ -17,22 +17,22 @@ export class ThemesService {
         })
     }
 
-    findTheme (name: string): Theme {
-        return this.config.enabledServices(this.themes).find(x => x.name === name)
+    findTheme (name: string): Theme|null {
+        return this.config.enabledServices(this.themes).find(x => x.name === name) || null
     }
 
     findCurrentTheme (): Theme {
-        return this.findTheme(this.config.store.appearance.theme) || this.findTheme('Standard')
+        return this.findTheme(this.config.store.appearance.theme) || this.findTheme('Standard')!
     }
 
     applyTheme (theme: Theme): void {
         if (!this.styleElement) {
             this.styleElement = document.createElement('style')
             this.styleElement.setAttribute('id', 'theme')
-            document.querySelector('head').appendChild(this.styleElement)
+            document.querySelector('head')!.appendChild(this.styleElement)
         }
         this.styleElement.textContent = theme.css
-        document.querySelector('style#custom-css').innerHTML = this.config.store.appearance.css
+        document.querySelector('style#custom-css')!.innerHTML = this.config.store.appearance.css
     }
 
     private applyCurrentTheme (): void {

terminus-core/src/services/touchbar.service.ts

@@ -42,7 +42,7 @@ export class TouchbarService {
                 const showIcon = this.app.activeTab !== tab && hasActivity
                 const segment = this.tabSegments[app.tabs.indexOf(tab)]
                 if (segment) {
-                    segment.icon = showIcon ? activityIcon : null
+                    segment.icon = showIcon ? activityIcon : undefined
                 }
             })
         })
@@ -83,7 +83,9 @@ export class TouchbarService {
             segments: buttons.map(button => this.getButton(button)),
             mode: 'buttons',
             change: (selectedIndex) => this.zone.run(() => {
-                buttons[selectedIndex].click()
+                if (buttons[selectedIndex].click) {
+                    buttons[selectedIndex].click!()
+                }
             }),
         })
 
@@ -100,8 +102,8 @@ export class TouchbarService {
 
     private getButton (button: ToolbarButton): Electron.SegmentedControlSegment {
         return {
-            label: button.touchBarNSImage ? null : this.shortenTitle(button.touchBarTitle || button.title),
-            icon: button.touchBarNSImage ? this.getCachedNSImage(button.touchBarNSImage) : null,
+            label: button.touchBarNSImage ? undefined : this.shortenTitle(button.touchBarTitle || button.title),
+            icon: button.touchBarNSImage ? this.getCachedNSImage(button.touchBarNSImage) : undefined,
             // click: () => this.zone.run(() => button.click()),
         }
     }

terminus-core/src/tabContextMenu.ts

@@ -78,7 +78,7 @@ export class CommonOptionsContextMenu extends TabContextMenuItemProvider {
         return [
             {
                 label: 'Rename',
-                click: () => this.zone.run(() => tabHeader.showRenameTabModal()),
+                click: () => this.zone.run(() => tabHeader && tabHeader.showRenameTabModal()),
             },
             {
                 label: 'Duplicate',
@@ -86,7 +86,7 @@ export class CommonOptionsContextMenu extends TabContextMenuItemProvider {
             },
             {
                 label: 'Color',
-                sublabel: COLORS.find(x => x.value === tab.color).name,
+                sublabel: COLORS.find(x => x.value === tab.color)!.name,
                 submenu: COLORS.map(color => ({
                     label: color.name,
                     type: 'radio',

terminus-plugin-manager/package.json

 {
   "name": "terminus-plugin-manager",
-  "version": "1.0.83-nightly.0",
+  "version": "1.0.92-nightly.0",
   "description": "Terminus' plugin manager",
   "keywords": [
     "terminus-builtin-plugin"
@@ -20,7 +20,6 @@
     "@types/semver": "^6.0.0",
     "axios": "^0.19.0",
     "mz": "^2.6.0",
-    "ngx-pipes": "^1.6.1",
     "semver": "^6.1.0"
   },
   "peerDependencies": {

terminus-plugin-manager/src/components/pluginsSettingsTab.component.pug

@@ -8,9 +8,9 @@
     button.btn.btn-outline-info.btn-sm.ml-auto((click)='openPluginsFolder()')
         i.fas.fa-folder
         span Plugins folder
-    
+
 .list-group.list-group-flush.mt-2
-    .list-group-item.d-flex.align-items-center(*ngFor='let plugin of pluginManager.installedPlugins|orderBy:"name"')
+    .list-group-item.d-flex.align-items-center(*ngFor='let plugin of pluginManager.installedPlugins')
         .mr-auto.d-flex.flex-column
             div
                 strong {{plugin.name}}
@@ -33,15 +33,15 @@
             (click)='enablePlugin(plugin)'
         )
             i.fas.fa-fw.fa-play
-                
+
         button.btn.btn-secondary.ml-2(
             *ngIf='!config.store.pluginBlacklist.includes(plugin.name)',
             (click)='disablePlugin(plugin)'
         )
             i.fas.fa-fw.fa-pause
-            
+
         button.btn.btn-danger.ml-2(
-            (click)='uninstallPlugin(plugin)', 
+            (click)='uninstallPlugin(plugin)',
             *ngIf='!plugin.isBuiltin',
             [disabled]='busy[plugin.name] != undefined'
         )
@@ -65,7 +65,7 @@ div
 
 
     .list-group.list-group-flush.mb-4(*ngIf='availablePlugins$')
-        ng-container(*ngFor='let plugin of (availablePlugins$|async|orderBy:"name")')
+        ng-container(*ngFor='let plugin of (availablePlugins$|async)')
             .list-group-item.d-flex.align-items-center(*ngIf='!isAlreadyInstalled(plugin)')
                 button.btn.btn-primary.mr-3(
                     (click)='installPlugin(plugin)',
@@ -73,7 +73,7 @@ div
                 )
                     i.fas.fa-fw.fa-download(*ngIf='busy[plugin.name] != BusyState.Installing')
                     i.fas.fa-fw.fa-circle-notch.fa-spin(*ngIf='busy[plugin.name] == BusyState.Installing')
-                
+
                 div((click)='showPluginInfo(plugin)')
                     div
                         strong {{plugin.name}}

terminus-plugin-manager/src/components/pluginsSettingsTab.component.ts

 import { BehaviorSubject, Observable } from 'rxjs'
-import { debounceTime, distinctUntilChanged, first, tap, flatMap } from 'rxjs/operators'
+import { debounceTime, distinctUntilChanged, first, tap, flatMap, map } from 'rxjs/operators'
 import * as semver from 'semver'
 
 import { Component, Input } from '@angular/core'
@@ -18,7 +18,7 @@ export class PluginsSettingsTabComponent {
     @Input() availablePlugins$: Observable<PluginInfo[]>
     @Input() availablePluginsQuery$ = new BehaviorSubject<string>('')
     @Input() availablePluginsReady = false
-    @Input() knownUpgrades: {[id: string]: PluginInfo} = {}
+    @Input() knownUpgrades: {[id: string]: PluginInfo|null} = {}
     @Input() busy: {[id: string]: BusyState} = {}
     @Input() erroredPlugin: string
     @Input() errorMessage: string
@@ -43,9 +43,12 @@ export class PluginsSettingsTabComponent {
                     }))
                 })
             )
-        this.availablePlugins$.pipe(first()).subscribe(available => {
+        this.availablePlugins$.pipe(first(), map((plugins: PluginInfo[]) => {
+            plugins.sort((a, b) => a.name > b.name ? 1 : -1)
+            return plugins
+        })).subscribe(available => {
             for (const plugin of this.pluginManager.installedPlugins) {
-                this.knownUpgrades[plugin.name] = available.find(x => x.name === plugin.name && semver.gt(x.version, plugin.version))
+                this.knownUpgrades[plugin.name] = available.find(x => x.name === plugin.name && semver.gt(x.version, plugin.version)) || null
             }
         })
     }
@@ -91,7 +94,7 @@ export class PluginsSettingsTabComponent {
     }
 
     async upgradePlugin (plugin: PluginInfo): Promise<void> {
-        return this.installPlugin(this.knownUpgrades[plugin.name])
+        return this.installPlugin(this.knownUpgrades[plugin.name]!)
     }
 
     showPluginInfo (plugin: PluginInfo) {

terminus-plugin-manager/src/index.ts

 import { NgModule } from '@angular/core'
 import { BrowserModule } from '@angular/platform-browser'
 import { FormsModule } from '@angular/forms'
-import { NgPipesModule } from 'ngx-pipes'
 import { NgbModule } from '@ng-bootstrap/ng-bootstrap'
 
 import { SettingsTabProvider } from 'terminus-settings'
@@ -15,7 +14,6 @@ import { PluginsSettingsTabProvider } from './settings'
         BrowserModule,
         FormsModule,
         NgbModule,
-        NgPipesModule,
     ],
     providers: [
         { provide: SettingsTabProvider, useClass: PluginsSettingsTabProvider, multi: true },

terminus-settings/package.json

 {
   "name": "terminus-settings",
-  "version": "1.0.83-nightly.4",
+  "version": "1.0.92-nightly.0",
   "description": "Terminus terminal settings page",
   "keywords": [
     "terminus-builtin-plugin"
@@ -17,8 +17,7 @@
   "author": "Eugene Pankov",
   "license": "MIT",
   "devDependencies": {
-    "@types/deep-equal": "1.0.1",
-    "ngx-pipes": "^1.6.1"
+    "@types/deep-equal": "1.0.1"
   },
   "peerDependencies": {
     "@angular/common": "^7",
@@ -26,7 +25,7 @@
     "@angular/forms": "^7",
     "@angular/platform-browser": "^7",
     "@ng-bootstrap/ng-bootstrap": "^1",
-    "terminus-core": "*",
-    "rxjs": "^5"
+    "rxjs": "^5",
+    "terminus-core": "*"
   }
 }

terminus-settings/src/components/hotkeyInputModal.component.ts

@@ -41,8 +41,8 @@ export class HotkeyInputModalComponent {
     @Input() timeoutProgress = 0
 
     private keySubscription: Subscription
-    private lastKeyEvent: number
-    private keyTimeoutInterval: number = null
+    private lastKeyEvent: number|null = null
+    private keyTimeoutInterval: number|null = null
 
     constructor (
         private modalInstance: NgbActiveModal,
@@ -78,7 +78,7 @@ export class HotkeyInputModalComponent {
         this.keySubscription.unsubscribe()
         this.hotkeys.clearCurrentKeystrokes()
         this.hotkeys.enable()
-        clearInterval(this.keyTimeoutInterval)
+        clearInterval(this.keyTimeoutInterval!)
     }
 
     close () {

terminus-settings/src/components/settingsTab.component.pug

@@ -8,14 +8,14 @@ ngb-tabset.vertical(type='pills', [activeId]='activeTab')
         ng-template(ngbTabContent)
             .d-flex.align-items-center.mb-4
                 h1.terminus-title.mb-2.mr-2 Terminus
-                    sup α 
-                
+                    sup α
+
                 .text-muted.mr-auto {{homeBase.appVersion}}
-                            
+
                 button.btn.btn-secondary.mr-3((click)='homeBase.openGitHub()')
                     i.fab.fa-github
                     span GitHub
-                    
+
                 button.btn.btn-secondary((click)='homeBase.reportBug()')
                     i.fas.fa-bug
                     span Report a problem
@@ -57,7 +57,7 @@ ngb-tabset.vertical(type='pills', [activeId]='activeTab')
                     .title(*ngIf='hostApp.platform === Platform.Windows') Acrylic background
                     .title(*ngIf='hostApp.platform === Platform.macOS') Vibrancy
                     .description Gives the window a blurred transparent background
-                    
+
                 toggle(
                     [(ngModel)]='config.store.appearance.vibrancy',
                     (ngModelChange)='config.save()'
@@ -85,7 +85,7 @@ ngb-tabset.vertical(type='pills', [activeId]='activeTab')
                             [value]='"fluent"'
                         )
                         | Fluent
-                    
+
             .form-line
                 .header
                     .title Transparency
@@ -256,27 +256,28 @@ ngb-tabset.vertical(type='pills', [activeId]='activeTab')
             | Hotkeys
         ng-template(ngbTabContent)
             h3.mb-3 Hotkeys
-            
+
             .input-group.mb-4
                 .input-group-prepend
                     .input-group-text
                         i.fas.fa-fw.fa-search
                 input.form-control(type='search', placeholder='Search hotkeys', [(ngModel)]='hotkeyFilter')
-                            
+
             .form-group
                 table.hotkeys-table
                     tr
                         th Name
                         th ID
                         th Hotkey
-                    tr(*ngFor='let hotkey of hotkeyDescriptions|filterBy:["name"]:hotkeyFilter')
-                        td {{hotkey.name}}
-                        td {{hotkey.id}}
-                        td.pr-5
-                            multi-hotkey-input(
-                                [model]='getHotkey(hotkey.id)',
-                                (modelChange)='setHotkey(hotkey.id, $event); config.save(); docking.dock()'
-                            )
+                    ng-container(*ngFor='let hotkey of hotkeyDescriptions')
+                        tr(*ngIf='!hotkeyFilter || hotkey.name.toLowerCase().includes(hotkeyFilter.toLowerCase())')
+                            td {{hotkey.name}}
+                            td {{hotkey.id}}
+                            td.pr-5
+                                multi-hotkey-input(
+                                    [model]='getHotkey(hotkey.id)',
+                                    (modelChange)='setHotkey(hotkey.id, $event); config.save(); docking.dock()'
+                                )
 
     ngb-tab(*ngFor='let provider of settingsProviders', [id]='provider.id')
         ng-template(ngbTabTitle)
@@ -285,7 +286,7 @@ ngb-tabset.vertical(type='pills', [activeId]='activeTab')
         ng-template(ngbTabContent)
             settings-tab-body([provider]='provider')
 
-                
+
     ngb-tab(id='config-file')
         ng-template(ngbTabTitle)
             i.fas.fa-fw.fa-code.mr-2
@@ -303,7 +304,7 @@ ngb-tabset.vertical(type='pills', [activeId]='activeTab')
                         textarea.form-control.h-100(
                             [(ngModel)]='configDefaults',
                             readonly
-                        )   
+                        )
                 .mt-2.mb-2.d-flex
                     button.btn.btn-primary((click)='saveConfigFile()', *ngIf='isConfigFileValid()')
                         i.fas.fa-check.mr-2

terminus-settings/src/index.ts

@@ -2,7 +2,6 @@ import { NgModule } from '@angular/core'
 import { BrowserModule } from '@angular/platform-browser'
 import { FormsModule } from '@angular/forms'
 import { NgbModule } from '@ng-bootstrap/ng-bootstrap'
-import { NgPipesModule } from 'ngx-pipes'
 
 import TerminusCorePlugin, { ToolbarButtonProvider, TabRecoveryProvider, HotkeyProvider, ConfigProvider } from 'terminus-core'
 
@@ -22,7 +21,6 @@ import { SettingsConfigProvider } from './config'
         BrowserModule,
         FormsModule,
         NgbModule,
-        NgPipesModule,
         TerminusCorePlugin,
     ],
     providers: [

terminus-settings/src/recoveryProvider.ts

@@ -6,7 +6,7 @@ import { SettingsTabComponent } from './components/settingsTab.component'
 /** @hidden */
 @Injectable()
 export class RecoveryProvider extends TabRecoveryProvider {
-    async recover (recoveryToken: any): Promise<RecoveredTab> {
+    async recover (recoveryToken: any): Promise<RecoveredTab|null> {
         if (recoveryToken && recoveryToken.type === 'app:settings') {
             return { type: SettingsTabComponent }
         }

terminus-settings/yarn.lock

@@ -8,6 +8,6 @@
   integrity sha512-mMUu4nWHLBlHtxXY17Fg6+ucS/MnndyOWyOe7MmwkoMYxvfQU2ajtRaEvqSUv+aVkMqH/C0NCI8UoVfRNQ10yg==
 
 ngx-pipes@^1.6.1:
-  version "1.6.6"
-  resolved "https://registry.yarnpkg.com/ngx-pipes/-/ngx-pipes-1.6.6.tgz#32bb80906c220f1e84d5cce7d6dae002cffead4b"
-  integrity sha512-mRV0xOZDd6/Jlvti4W0pDepZRIHLHd3kZ6ZzdqyGCU0dxbKVWWLTR1jlNlxN1ruMk8eO0Y8lNh6a1bEW7dJP1w==
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/ngx-pipes/-/ngx-pipes-1.7.0.tgz#70e166dc2f59a8b96f69dfbf75b58186c189037b"
+  integrity sha512-ZTJc0/a+e+8v7pP+tb301So5UlxVOoUEZZtJHMjuvHO/CADqfgF+sOAdq1dZMf2RnJ2QTuxbZ8wf34w3T/f8AA==

terminus-ssh/package.json

 {
   "name": "terminus-ssh",
-  "version": "1.0.83-nightly.0",
+  "version": "1.0.92-nightly.0",
   "description": "SSH connection manager for Terminus",
   "keywords": [
     "terminus-builtin-plugin"

terminus-ssh/src/api.ts

 import { BaseSession } from 'terminus-terminal'
 
 export interface LoginScript {
-    expect?: string
+    expect: string
     send: string
     isRegex?: boolean
     optional?: boolean
@@ -15,7 +15,7 @@ export enum SSHAlgorithmType {
 }
 
 export interface SSHConnection {
-    name?: string
+    name: string
     host: string
     port: number
     user: string
@@ -122,7 +122,7 @@ export class SSHSession extends BaseSession {
         this.kill('TERM')
     }
 
-    async getWorkingDirectory (): Promise<string> {
+    async getWorkingDirectory (): Promise<string|null> {
         return null
     }
 

terminus-ssh/src/components/editConnectionModal.component.ts

@@ -85,7 +85,7 @@ export class EditConnectionModalComponent {
                 title: 'Select private key',
             }
         ).then(result => {
-            if (!result.filePaths) {
+            if (result.filePaths) {
                 this.connection.privateKey = result.filePaths[0]
             }
         })
@@ -93,7 +93,7 @@ export class EditConnectionModalComponent {
 
     save () {
         for (const k of Object.values(SSHAlgorithmType)) {
-            this.connection.algorithms[k] = Object.entries(this.algorithms[k])
+            this.connection.algorithms![k] = Object.entries(this.algorithms[k])
                 .filter(([_k, v]) => !!v)
                 .map(([k, _v]) => k)
         }
@@ -105,6 +105,9 @@ export class EditConnectionModalComponent {
     }
 
     moveScriptUp (script: LoginScript) {
+        if (!this.connection.scripts) {
+            this.connection.scripts = []
+        }
         const index = this.connection.scripts.indexOf(script)
         if (index > 0) {
             this.connection.scripts.splice(index, 1)
@@ -113,6 +116,9 @@ export class EditConnectionModalComponent {
     }
 
     moveScriptDown (script: LoginScript) {
+        if (!this.connection.scripts) {
+            this.connection.scripts = []
+        }
         const index = this.connection.scripts.indexOf(script)
         if (index >= 0 && index < this.connection.scripts.length - 1) {
             this.connection.scripts.splice(index, 1)
@@ -121,7 +127,7 @@ export class EditConnectionModalComponent {
     }
 
     async deleteScript (script: LoginScript) {
-        if ((await this.electron.showMessageBox(
+        if (this.connection.scripts && (await this.electron.showMessageBox(
             this.hostApp.getWindow(),
             {
                 type: 'warning',
@@ -136,6 +142,9 @@ export class EditConnectionModalComponent {
     }
 
     addScript () {
+        if (!this.connection.scripts) {
+            this.connection.scripts = []
+        }
         this.connection.scripts.push({ expect: '', send: '' })
     }
 }

terminus-ssh/src/components/sshModal.component.ts

@@ -15,7 +15,7 @@ export class SSHModalComponent {
     connections: SSHConnection[]
     childFolders: SSHConnectionGroup[]
     quickTarget: string
-    lastConnection: SSHConnection
+    lastConnection: SSHConnection|null = null
     childGroups: SSHConnectionGroup[]
     groupCollapsed: {[id: string]: boolean} = {}
 
@@ -91,14 +91,14 @@ export class SSHModalComponent {
         }
 
         for (const connection of connections) {
-            connection.group = connection.group || null
+            connection.group = connection.group || undefined
             let group = this.childGroups.find(x => x.name === connection.group)
             if (!group) {
                 group = {
-                    name: connection.group,
+                    name: connection.group!,
                     connections: [],
                 }
-                this.childGroups.push(group)
+                this.childGroups.push(group!)
             }
             group.connections.push(connection)
         }

terminus-ssh/src/components/sshSettingsTab.component.ts

@@ -97,7 +97,7 @@ export class SSHSettingsTabComponent {
             }
         )).response === 1) {
             for (const connection of this.connections.filter(x => x.group === group.name)) {
-                connection.group = null
+                connection.group = undefined
             }
             this.config.save()
             this.refresh()
@@ -109,14 +109,14 @@ export class SSHSettingsTabComponent {
         this.childGroups = []
 
         for (const connection of this.connections) {
-            connection.group = connection.group || null
+            connection.group = connection.group || undefined
             let group = this.childGroups.find(x => x.name === connection.group)
             if (!group) {
                 group = {
-                    name: connection.group,
+                    name: connection.group!,
                     connections: [],
                 }
-                this.childGroups.push(group)
+                this.childGroups.push(group!)
             }
             group.connections.push(connection)
         }

terminus-ssh/src/recoveryProvider.ts

@@ -6,7 +6,7 @@ import { SSHTabComponent } from './components/sshTab.component'
 /** @hidden */
 @Injectable()
 export class RecoveryProvider extends TabRecoveryProvider {
-    async recover (recoveryToken: any): Promise<RecoveredTab> {
+    async recover (recoveryToken: any): Promise<RecoveredTab|null> {
         if (recoveryToken && recoveryToken.type === 'app:ssh-tab') {
             return {
                 type: SSHTabComponent,

terminus-ssh/src/services/passwordStorage.service.ts

@@ -12,7 +12,7 @@ export class PasswordStorageService {
         await keytar.deletePassword(`ssh@${connection.host}`, connection.user)
     }
 
-    async loadPassword (connection: SSHConnection): Promise<string> {
+    async loadPassword (connection: SSHConnection): Promise<string|null> {
         return keytar.getPassword(`ssh@${connection.host}`, connection.user)
     }
 }

terminus-ssh/src/services/ssh.service.ts

@@ -38,9 +38,9 @@ export class SSHService {
         ) as SSHTabComponent)
     }
 
-    async connectSession (session: SSHSession, logCallback?: (s: string) => void): Promise<void> {
-        let privateKey: string = null
-        let privateKeyPassphrase: string = null
+    async connectSession (session: SSHSession, logCallback?: (s: any) => void): Promise<void> {
+        let privateKey: string|null = null
+        let privateKeyPassphrase: string|null = null
         let privateKeyPath = session.connection.privateKey
 
         if (!logCallback) {
@@ -48,12 +48,12 @@ export class SSHService {
         }
 
         const log = (s: any) => {
-            logCallback(s)
+            logCallback!(s)
             this.logger.info(s)
         }
 
         if (!privateKeyPath) {
-            const userKeyPath = path.join(process.env.HOME, '.ssh', 'id_rsa')
+            const userKeyPath = path.join(process.env.HOME as string, '.ssh', 'id_rsa')
             if (await fs.exists(userKeyPath)) {
                 log(`Using user's default private key: ${userKeyPath}`)
                 privateKeyPath = userKeyPath
@@ -92,7 +92,7 @@ export class SSHService {
 
         const ssh = new Client()
         let connected = false
-        let savedPassword: string = null
+        let savedPassword: string|null = null
         await new Promise(async (resolve, reject) => {
             ssh.on('ready', () => {
                 connected = true
@@ -116,7 +116,7 @@ export class SSHService {
             ssh.on('keyboard-interactive', (name, instructions, instructionsLang, prompts, finish) => this.zone.run(async () => {
                 log(`Keyboard-interactive auth requested: ${name}`)
                 this.logger.info('Keyboard-interactive auth:', name, instructions, instructionsLang)
-                const results = []
+                const results: string[] = []
                 for (const prompt of prompts) {
                     const modal = this.ngbModal.open(PromptModalComponent)
                     modal.componentInstance.prompt = prompt.prompt
@@ -135,7 +135,7 @@ export class SSHService {
                 log('Banner: \n' + banner)
             })
 
-            let agent: string = null
+            let agent: string|null = null
             if (this.hostApp.platform === Platform.Windows) {
                 const pageantRunning = new Promise<boolean>(resolve => {
                     windowsProcessTreeNative.getProcessList(list => { // eslint-disable-line block-scoped-var
@@ -146,7 +146,7 @@ export class SSHService {
                     agent = 'pageant'
                 }
             } else {
-                agent = process.env.SSH_AUTH_SOCK
+                agent = process.env.SSH_AUTH_SOCK as string
             }
 
             try {
@@ -155,10 +155,10 @@ export class SSHService {
                     port: session.connection.port || 22,
                     username: session.connection.user,
                     password: session.connection.privateKey ? undefined : '',
-                    privateKey,
-                    passphrase: privateKeyPassphrase,
+                    privateKey: privateKey || undefined,
+                    passphrase: privateKeyPassphrase || undefined,
                     tryKeyboard: true,
-                    agent,
+                    agent: agent || undefined,
                     agentForward: !!agent,
                     keepaliveInterval: session.connection.keepaliveInterval,
                     keepaliveCountMax: session.connection.keepaliveCountMax,

terminus-terminal/package.json

 {
   "name": "terminus-terminal",
-  "version": "1.0.83-nightly.4",
+  "version": "1.0.92-nightly.0",
   "description": "Terminus' terminal emulation core",
   "keywords": [
     "terminus-builtin-plugin"

terminus-terminal/src/api/baseTerminalTab.component.ts

@@ -43,7 +43,7 @@ export class BaseTerminalTabComponent extends BaseTabComponent implements OnInit
     @ViewChild('content') content
 
     /** @hidden */
-    @HostBinding('style.background-color') backgroundColor: string
+    @HostBinding('style.background-color') backgroundColor: string|null = null
 
     /** @hidden */
     @HostBinding('class.top-padded') topPadded: boolean

terminus-terminal/src/buttonProvider.ts

@@ -18,7 +18,7 @@ export class ButtonProvider extends ToolbarButtonProvider {
                 for (const arg of argv.slice(1).concat([electron.remote.process.argv0])) {
                     if (await fs.exists(arg)) {
                         if ((await fs.stat(arg)).isDirectory()) {
-                            this.terminal.openTab(null, arg)
+                            this.terminal.openTab(undefined, arg)
                         }
                     }
                 }

terminus-terminal/src/colorSchemes.ts

@@ -8,7 +8,7 @@ import { TerminalColorScheme } from './api/interfaces'
 @Injectable()
 export class HyperColorSchemes extends TerminalColorSchemeProvider {
     async getSchemes (): Promise<TerminalColorScheme[]> {
-        const pluginsPath = path.join(process.env.HOME, '.hyper_plugins', 'node_modules')
+        const pluginsPath = path.join(process.env.HOME as string, '.hyper_plugins', 'node_modules')
         if (!await fs.exists(pluginsPath)) {
             return []
         }

terminus-terminal/src/components/appearanceSettingsTab.component.ts

@@ -19,7 +19,7 @@ export class AppearanceSettingsTabComponent {
     fonts: string[] = []
     colorSchemes: TerminalColorScheme[] = []
     equalComparator = deepEqual
-    editingColorScheme: TerminalColorScheme
+    editingColorScheme: TerminalColorScheme|null = null
     schemeChanged = false
 
     constructor (
@@ -68,7 +68,7 @@ export class AppearanceSettingsTabComponent {
 
     saveScheme () {
         let schemes = this.config.store.terminal.customColorSchemes
-        schemes = schemes.filter(x => x !== this.editingColorScheme && x.name !== this.editingColorScheme.name)
+        schemes = schemes.filter(x => x !== this.editingColorScheme && x.name !== this.editingColorScheme!.name)
         schemes.push(this.editingColorScheme)
         this.config.store.terminal.customColorSchemes = schemes
         this.config.save()

terminus-terminal/src/components/shellSettingsTab.component.ts

@@ -52,6 +52,9 @@ export class ShellSettingsTabComponent {
 
     pickWorkingDirectory () {
         const shell = this.shells.find(x => x.id === this.config.store.terminal.shell)
+        if (!shell) {
+            return
+        }
         const paths = this.electron.dialog.showOpenDialog(
             this.hostApp.getWindow(),
             {
@@ -66,7 +69,7 @@ export class ShellSettingsTabComponent {
 
     newProfile (shell: Shell) {
         const profile: Profile = {
-            name: shell.name,
+            name: shell.name || '',
             sessionOptions: this.terminalService.optionsFromShell(shell),
         }
         this.config.store.terminal.profiles = [profile, ...this.config.store.terminal.profiles]

terminus-terminal/src/components/terminalSettingsTab.component.ts

@@ -16,7 +16,7 @@ export class TerminalSettingsTabComponent {
     openWSLVolumeMixer () {
         this.electron.shell.openItem('sndvol.exe')
         this.terminal.openTab({
-            name: null,
+            name: '',
             sessionOptions: {
                 command: 'wsl.exe',
                 args: ['tput', 'bel'],

terminus-terminal/src/components/terminalTab.component.ts

@@ -68,7 +68,7 @@ export class TerminalTabComponent extends BaseTerminalTabComponent {
         }
     }
 
-    async getCurrentProcess (): Promise<BaseTabProcess> {
+    async getCurrentProcess (): Promise<BaseTabProcess|null> {
         const children = await this.session.getChildProcesses()
         if (!children.length) {
             return null

terminus-terminal/src/frontends/hterm.ts

@@ -78,11 +78,11 @@ hterm.hterm.VT.CSI[' q'] = function (parseState) {
 }
 
 hterm.hterm.VT.OSC['4'] = function (parseState) {
-    const args = parseState.args[0].split(';')
+    const args: string[] = parseState.args[0].split(';')
 
     const pairCount = args.length / 2
     const colorPalette = this.terminal.getTextAttributes().colorPalette
-    const responseArray = []
+    const responseArray: string[] = []
 
     for (let pairNumber = 0; pairNumber < pairCount; ++pairNumber) {
         const colorIndex = parseInt(args[pairNumber * 2])
@@ -95,7 +95,7 @@ hterm.hterm.VT.OSC['4'] = function (parseState) {
         if (colorValue === '?') {
             colorValue = hterm.lib.colors.rgbToX11(colorPalette[colorIndex])
             if (colorValue) {
-                responseArray.push(colorIndex + ';' + colorValue)
+                responseArray.push(colorIndex.toString() + ';' + colorValue)
             }
             continue
         }

terminus-terminal/src/frontends/htermFrontend.ts

@@ -186,7 +186,7 @@ export class HTermFrontend extends Frontend {
             this.io.onTerminalResize = (columns, rows) => {
                 this.resize.next({ columns, rows })
             }
-            this.ready.next(null)
+            this.ready.next()
             this.ready.complete()
 
             this.term.scrollPort_.document_.addEventListener('dragOver', event => {

terminus-terminal/src/frontends/xtermFrontend.ts

@@ -120,7 +120,7 @@ export class XTermFrontend extends Frontend {
             this.xterm.loadAddon(new WebglAddon())
         }
 
-        this.ready.next(null)
+        this.ready.next()
         this.ready.complete()
 
         this.xterm.loadAddon(this.search)
@@ -250,7 +250,7 @@ export class XTermFrontend extends Frontend {
         let html = `<div style="font-family: '${this.configService.store.terminal.font}', monospace; white-space: pre">`
         const selection = this.xterm.getSelectionPosition()
         if (!selection) {
-            return null
+            return ''
         }
         if (selection.startRow === selection.endRow) {
             html += this.getLineAsHTML(selection.startRow, selection.startColumn, selection.endColumn)
@@ -278,7 +278,7 @@ export class XTermFrontend extends Frontend {
 
     private getLineAsHTML (y: number, start: number, end: number): string {
         let html = '<div>'
-        let lastStyle = null
+        let lastStyle: string|null = null
         const line = (this.xterm.buffer.getLine(y) as any)._line
         const cell = new CellData()
         for (let i = start; i < end; i++) {

terminus-terminal/src/index.ts

@@ -188,7 +188,7 @@ export default class TerminalModule { // eslint-disable-line @typescript-eslint/
         hostApp.cliOpenDirectory$.subscribe(async directory => {
             if (await fs.exists(directory)) {
                 if ((await fs.stat(directory)).isDirectory()) {
-                    terminal.openTab(null, directory)
+                    terminal.openTab(undefined, directory)
                     hostApp.bringToFront()
                 }
             }

terminus-terminal/src/pathDrop.ts

@@ -15,7 +15,7 @@ export class PathDropDecorator extends TerminalDecorator {
                     event.preventDefault()
                 }),
                 terminal.frontend.drop$.subscribe(event => {
-                    for (const file of event.dataTransfer.files as any) {
+                    for (const file of event.dataTransfer!.files as any) {
                         this.injectPath(terminal, file.path)
                     }
                     event.preventDefault()

terminus-terminal/src/recoveryProvider.ts

@@ -6,7 +6,7 @@ import { TerminalTabComponent } from './components/terminalTab.component'
 /** @hidden */
 @Injectable()
 export class RecoveryProvider extends TabRecoveryProvider {
-    async recover (recoveryToken: any): Promise<RecoveredTab> {
+    async recover (recoveryToken: any): Promise<RecoveredTab|null> {
         if (recoveryToken && recoveryToken.type === 'app:terminal-tab') {
             return {
                 type: TerminalTabComponent,

terminus-terminal/src/services/dockMenu.service.ts

@@ -30,7 +30,7 @@ export class DockMenuService {
                     iconPath: process.execPath,
                     iconIndex: 0,
                 })),
-            }] : null)
+            }] : null as any)
         }
         if (this.hostApp.platform === Platform.macOS) {
             this.electron.app.dock.setMenu(this.electron.Menu.buildFromTemplate(

terminus-terminal/src/services/sessions.service.ts

@@ -62,7 +62,7 @@ export abstract class BaseSession {
     releaseInitialDataBuffer () {
         this.initialDataBufferReleased = true
         this.output.next(this.initialDataBuffer)
-        this.initialDataBuffer = null
+        this.initialDataBuffer = ''
     }
 
     async destroy (): Promise<void> {
@@ -81,14 +81,14 @@ export abstract class BaseSession {
     abstract kill (signal?: string): void
     abstract async getChildProcesses (): Promise<ChildProcess[]>
     abstract async gracefullyKillProcess (): Promise<void>
-    abstract async getWorkingDirectory (): Promise<string>
+    abstract async getWorkingDirectory (): Promise<string|null>
 }
 
 /** @hidden */
 export class Session extends BaseSession {
     private pty: any
     private pauseAfterExit = false
-    private guessedCWD: string
+    private guessedCWD: string|null = null
     private reportedCWD: string
 
     constructor (private config: ConfigService) {
@@ -96,7 +96,7 @@ export class Session extends BaseSession {
     }
 
     start (options: SessionOptions) {
-        this.name = options.name
+        this.name = options.name || ''
 
         const env = {
             ...process.env,
@@ -122,7 +122,7 @@ export class Session extends BaseSession {
 
         if (!fs.existsSync(cwd)) {
             console.warn('Ignoring non-existent CWD:', cwd)
-            cwd = null
+            cwd = undefined
         }
 
         this.pty = nodePTY.spawn(options.command, options.args || [], {
@@ -135,7 +135,7 @@ export class Session extends BaseSession {
             experimentalUseConpty: (isWindowsBuild(WIN_BUILD_CONPTY_SUPPORTED) && this.config.store.terminal.useConPTY ? 1 : false) as any,
         })
 
-        this.guessedCWD = cwd
+        this.guessedCWD = cwd || null
 
         this.truePID = this.pty['pid']
 
@@ -174,7 +174,7 @@ export class Session extends BaseSession {
             }
         })
 
-        this.pauseAfterExit = options.pauseAfterExit
+        this.pauseAfterExit = options.pauseAfterExit || false
     }
 
     processOSC1337 (data: string) {
@@ -270,7 +270,7 @@ export class Session extends BaseSession {
         }
     }
 
-    async getWorkingDirectory (): Promise<string> {
+    async getWorkingDirectory (): Promise<string|null> {
         if (this.reportedCWD) {
             return this.reportedCWD
         }

terminus-terminal/src/services/terminal.service.ts

@@ -51,7 +51,7 @@ export class TerminalService {
      * Launches a new terminal with a specific shell and CWD
      * @param pause Wait for a keypress when the shell exits
      */
-    async openTab (profile?: Profile, cwd?: string, pause?: boolean): Promise<TerminalTabComponent> {
+    async openTab (profile?: Profile, cwd?: string|null, pause?: boolean): Promise<TerminalTabComponent> {
         if (!profile) {
             const profiles = await this.getProfiles(true)
             profile = profiles.find(x => slug(x.name).toLowerCase() === this.config.store.terminal.profile) || profiles[0]
@@ -85,7 +85,7 @@ export class TerminalService {
         const sessionOptions = {
             ...profile.sessionOptions,
             pauseAfterExit: pause,
-            cwd,
+            cwd: cwd || undefined,
         }
 
         return this.openTabWithOptions(sessionOptions)

terminus-terminal/src/services/terminalFrontend.service.ts

@@ -34,6 +34,6 @@ export class TerminalFrontendService {
                 this.getFrontend(),
             )
         }
-        return this.containers.get(session)
+        return this.containers.get(session)!
     }
 }

terminus-terminal/src/shells/linuxDefault.ts

@@ -23,7 +23,7 @@ export class LinuxDefaultShellProvider extends ShellProvider {
             return []
         }
         const line = (await fs.readFile('/etc/passwd', { encoding: 'utf-8' }))
-            .split('\n').find(x => x.startsWith(process.env.LOGNAME + ':'))
+            .split('\n').find(x => x.startsWith(`${process.env.LOGNAME}:`))
         if (!line) {
             this.logger.warn('Could not detect user shell')
             return [{

tsconfig.json

@@ -16,6 +16,7 @@
     "esModuleInterop": true,
     "allowSyntheticDefaultImports": true,
     "importHelpers": true,
+    "strictNullChecks": true,
     "lib": [
       "dom",
       "es5",