chore: Enforce a few house rules via eslint (#2539)

.eslintrc.cjs

@@ -1,18 +0,0 @@
-module.exports = {
-  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
-  parserOptions: {
-    ecmaVersion: 2020, // Allows for the parsing of modern ECMAScript features
-    sourceType: 'module', // Allows for the use of imports
-  },
-  extends: [
-    'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
-    'prettier', // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
-  ],
-  rules: {
-    // Place to specify ESLint rules. Can be used to overwrite rules specified
-    // from the extended configs e.g.
-    // "@typescript-eslint/explicit-function-return-type": "off",
-    '@typescript-eslint/no-explicit-any': 'error',
-    'no-multi-assign': 'error',
-  },
-};

INSTRUCTIONS.md

@@ -9,7 +9,7 @@ Commands: `yarn install`, `yarn run build`, `yarn run test`, `yarn run coverage`
 ## Code Style
 
 - Conventional Commits (used by semantic-release).
-- Comments explain **why**, not what — only when intent isn't obvious from code.
+- Comments explain **why**, not what -- only when intent isn't obvious from code.
 
 ## TypeScript
 
@@ -32,7 +32,7 @@ Commands: `yarn install`, `yarn run build`, `yarn run test`, `yarn run coverage`
 ## Architecture
 
 - Consolidate duplicate logic when adding helpers; don't leave redundant inline expressions.
-- **Naming consistency:** Renames span all layers — schema, types, CSS, localization keys, templates, docs. All schema fields must appear in the documentation table.
+- **Naming consistency:** Renames span all layers -- schema, types, CSS, localization keys, templates, docs. All schema fields must appear in the documentation table.
 - **Separation of concerns:** `components/` renders only; logic in `components-lib/` controllers (using `ReactiveController` where needed).
 - **Manager pattern:** `CardController` orchestrates managers (`ConfigManager`, `HASSManager`, `ViewManager`, etc.). New cross-cutting concerns → new manager.
 - **Module conventions:** `types.ts` for types/schemas, `*-manager.ts` for coordinators, `*-controller.ts` for logic, `utils/` for helpers.
@@ -40,7 +40,7 @@ Commands: `yarn install`, `yarn run build`, `yarn run test`, `yarn run coverage`
 ## Preferences
 
 - Think through UX states and edge cases **before** writing code.
-- No re-exports or pass-through files — import from source directly.
+- No re-exports or pass-through files -- import from source directly.
 - Derive TypeScript types from Zod schemas (`z.infer<typeof schema>`); no parallel interfaces.
 - User-facing schemas: only user-configurable fields. Internal fields go in a derived interface (`interface InternalFoo extends Foo { ... }`).
 - Shared schemas go in `config/schema/common/` from the start.

docs/configuration/profiles.md

@@ -39,7 +39,7 @@ Turns the card into a phone-style ringer that answers a [two-way audio
 call](../usage/2-way-audio.md) when somebody presses a doorbell. Intended for a
 wall-mounted tablet sitting on a dashboard with a doorbell camera.
 
-Minimal configuration — just point it at a doorbell-capable camera:
+Minimal configuration -- just point it at a doorbell-capable camera:
 
 ```yaml
 type: custom:advanced-camera-card

docs/configuration/status-bar.md

@@ -29,14 +29,14 @@ status_bar:
 
 ### Available Items
 
-| Button name  | Description                                                                                                                                                                                                                                                                                                                                                                   |
-| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `engine`     | The icon of the camera engine for the relevant camera.                                                                                                                                                                                                                                                                                                                        |
-| `issues`     | Indicator icons that appear while any card issue is active — e.g. configuration error, configuration upgrade available, Home Assistant connection lost, camera initialization failed, legacy `frigate-hass-card` resource detected, media (live/recorded/image) not loading, media query failed, or view cannot be resolved. See the warning below about disabling this item. |
-| `resolution` | The detected media resolution (if any).                                                                                                                                                                                                                                                                                                                                       |
-| `severity`   | The media severity indicator (if any) for review severity (e.g. Frigate alerts/detections).                                                                                                                                                                                                                                                                                   |
-| `technology` | The detected media technology (if any).                                                                                                                                                                                                                                                                                                                                       |
-| `title`      | The media title.                                                                                                                                                                                                                                                                                                                                                              |
+| Button name  | Description                                                                                                                                                                                                                                                                                                                                                                    |
+| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| `engine`     | The icon of the camera engine for the relevant camera.                                                                                                                                                                                                                                                                                                                         |
+| `issues`     | Indicator icons that appear while any card issue is active -- e.g. configuration error, configuration upgrade available, Home Assistant connection lost, camera initialization failed, legacy `frigate-hass-card` resource detected, media (live/recorded/image) not loading, media query failed, or view cannot be resolved. See the warning below about disabling this item. |
+| `resolution` | The detected media resolution (if any).                                                                                                                                                                                                                                                                                                                                        |
+| `severity`   | The media severity indicator (if any) for review severity (e.g. Frigate alerts/detections).                                                                                                                                                                                                                                                                                    |
+| `technology` | The detected media technology (if any).                                                                                                                                                                                                                                                                                                                                        |
+| `title`      | The media title.                                                                                                                                                                                                                                                                                                                                                               |
 
 ### Options for each item
 

docs/examples.md

@@ -91,7 +91,7 @@ automations:
 ### Fullscreen with display mode and substream switching
 
 This example adds a custom menu button that switches to single display mode,
-activates the HD substream, and enters card fullscreen — all in a single tap.
+activates the HD substream, and enters card fullscreen -- all in a single tap.
 An automation restores the grid layout and substream when fullscreen is exited.
 This is useful in [grid](configuration/live.md) layouts where the card's
 standard fullscreen button would show all cameras rather than a single HD
@@ -376,9 +376,9 @@ elements:
 
 The [`doorbell` profile](configuration/profiles.md?id=doorbell) turns a dashboard into a phone-like ringer when somebody presses the doorbell, by setting [`view.triggers.actions.trigger: call`](configuration/view.md?id=triggers) and auto-discovering [HA `event.*` entities](https://www.home-assistant.io/integrations/event/#device-class) with `device_class: doorbell` on the camera's device (Ring, UniFi Protect, Nest, DoorBird, Reolink, etc.). The intended deployment is a wall-mounted tablet sitting on the dashboard.
 
-A doorbell press is instantaneous, so the card synthesises a ring window from [`view.triggers.event_hold_seconds`](configuration/view.md?id=triggers) (default `30`s) — long enough for a typical phone-style answer window. `untrigger_delay_seconds` then lingers past that, same as for any stateful trigger.
+A doorbell press is instantaneous, so the card synthesises a ring window from [`view.triggers.event_hold_seconds`](configuration/view.md?id=triggers) (default `30`s) -- long enough for a typical phone-style answer window. `untrigger_delay_seconds` then lingers past that, same as for any stateful trigger.
 
-`triggers.motion`, `triggers.occupancy`, and `triggers.media_events` are off by default — only the explicit doorbell press triggers the call, so casual motion won't make the card ring.
+`triggers.motion`, `triggers.occupancy`, and `triggers.media_events` are off by default -- only the explicit doorbell press triggers the call, so casual motion won't make the card ring.
 
 ```yaml
 type: custom:advanced-camera-card
@@ -398,9 +398,9 @@ profiles:
 
 #### With a Zigbee (ZHA / deCONZ) doorbell button
 
-Zigbee buttons connected via ZHA or deCONZ typically don't expose a per-device entity — they fire raw HA bus events (`zha_event`, `deconz_event`) shared across every Zigbee device on the integration. The `doorbell` profile's auto-discovery doesn't cover this case; reuse the profile (it still wires up `trigger: call` / `untrigger: call` and the ring window) but opt out of auto-discovery per camera and add [`triggers.events`](configuration/cameras/README.md?id=events) with an `event_data` filter to pick out the right device.
+Zigbee buttons connected via ZHA or deCONZ typically don't expose a per-device entity -- they fire raw HA bus events (`zha_event`, `deconz_event`) shared across every Zigbee device on the integration. The `doorbell` profile's auto-discovery doesn't cover this case; reuse the profile (it still wires up `trigger: call` / `untrigger: call` and the ring window) but opt out of auto-discovery per camera and add [`triggers.events`](configuration/cameras/README.md?id=events) with an `event_data` filter to pick out the right device.
 
-You can copy the exact `device_ieee` (ZHA) or `id` (deCONZ) and command values straight out of **Developer tools → Events** in Home Assistant — listen to the event type, press the doorbell, and use whatever appears in the `data` payload.
+You can copy the exact `device_ieee` (ZHA) or `id` (deCONZ) and command values straight out of **Developer tools → Events** in Home Assistant -- listen to the event type, press the doorbell, and use whatever appears in the `data` payload.
 
 ```yaml
 type: custom:advanced-camera-card

docs/troubleshooting.md

@@ -233,7 +233,7 @@ between clicking the download button and the download starting.
 - If you are using a custom `client_id` setting in your `frigate.yml` file (the
   configuration file for the Frigate backend itself), the card will auto-detect
   it from the camera entity. If auto-detection fails (e.g. no `camera_entity`
-  is configured), set it manually — see [Frigate engine
+  is configured), set it manually -- see [Frigate engine
   configuration](configuration/cameras/engine.md?id=frigate).
 - You must have the `Enable the media browser` option enabled for the Frigate
   integration, in order for media fetches to work for the card. Media fetches
@@ -305,7 +305,7 @@ Picture-in-Picture (PIP) uses the browser's [native video PIP
 API](https://caniuse.com/picture-in-picture) which floats the raw video element
 into a small window. This means:
 
-- **No card UI in the PIP window.** Only the video itself is shown — no menu,
+- **No card UI in the PIP window.** Only the video itself is shown -- no menu,
   status bar, timeline, or other card elements. The card remains fully
   functional on the dashboard behind it.
 - **Limited browser support.** Not all browsers support the PIP API. See
@@ -320,7 +320,7 @@ was explored using the experimental [Document Picture-in-Picture
 API](https://caniuse.com/mdn-api_documentpictureinpicture), however it proved
 unworkable: Home Assistant state updates cannot reach a card in a separate
 document, and browser-managed styles (`adoptedStyleSheets`) are cleared when
-elements move between documents — resulting in an unstyled, non-updating card.
+elements move between documents -- resulting in an unstyled, non-updating card.
 
 ### New version not working in Chrome
 

docs/uml/call-sequence.puml

@@ -25,7 +25,7 @@ opt <color:#43a047>**""live.microphone.always_connected""**</color> not enabled
 end
 
 note over User, Mic
-  The microphone must connect for the call to proceed —
+  The microphone must connect for the call to proceed --
   if access is denied or unsupported, the call does not start
 end note
 
@@ -46,8 +46,8 @@ end
 
 User -> Card : End the call
 note over User, Card
-  Via Hang-up button, <color:#43a047>**""call_end""**</color> action, or — when
-  <color:#43a047>**""live.controls.call.lock""**</color> is disabled — navigating away
+  Via Hang-up button, <color:#43a047>**""call_end""**</color> action, or -- when
+  <color:#43a047>**""live.controls.call.lock""**</color> is disabled -- navigating away
 end note
 
 Card --> User : Inbound audio mutes (<color:#43a047>**""live.auto_mute""**</color>)

eslint.config.mjs

@@ -13,6 +13,39 @@ const compat = new FlatCompat({
   allConfig: js.configs.all,
 });
 
+// Local rule: ban the em-dash character (U+2014) anywhere, including comments and
+// strings. The codebase uses a colon or a double hyphen `--` instead. The regex uses
+// the unicode escape so the character never appears literally in this file.
+const noEmDash = {
+  meta: {
+    type: 'problem',
+    docs: { description: 'Disallow the em-dash character; use ":" or "--" instead.' },
+    messages: {
+      emDash: 'Em-dash character is not allowed; use ":" or "--" instead.',
+    },
+  },
+  create(context) {
+    const sourceCode = context.sourceCode ?? context.getSourceCode();
+    return {
+      Program(node) {
+        const text = sourceCode.getText();
+        const re = /\u2014/g;
+        let match;
+        while ((match = re.exec(text)) !== null) {
+          context.report({
+            node,
+            loc: {
+              start: sourceCode.getLocFromIndex(match.index),
+              end: sourceCode.getLocFromIndex(match.index + 1),
+            },
+            messageId: 'emDash',
+          });
+        }
+      },
+    };
+  },
+};
+
 export default defineConfig([
   {
     extends: compat.extends('plugin:@typescript-eslint/recommended', 'prettier'),
@@ -23,8 +56,56 @@ export default defineConfig([
       sourceType: 'module',
     },
 
+    plugins: {
+      local: { rules: { 'no-em-dash': noEmDash } },
+    },
+
     rules: {
       curly: 'error',
+      'local/no-em-dash': 'error',
+      '@typescript-eslint/no-explicit-any': 'error',
+      '@typescript-eslint/no-non-null-assertion': 'error',
+      '@typescript-eslint/parameter-properties': 'error',
+    },
+  },
+
+  // Timers must go through the Timer class (src/utils/timer.ts).
+  {
+    files: ['src/**/*.ts'],
+    rules: {
+      'no-restricted-syntax': [
+        'error',
+        {
+          selector:
+            'CallExpression > Identifier.callee[name=/^(setTimeout|setInterval)$/]',
+          message:
+            'Use the Timer class (src/utils/timer.ts) instead of setTimeout/setInterval.',
+        },
+        {
+          selector: 'MemberExpression[property.name=/^(setTimeout|setInterval)$/]',
+          message:
+            'Use the Timer class (src/utils/timer.ts) instead of window.setTimeout/setInterval.',
+        },
+      ],
+    },
+  },
+
+  // A fire-and-forget promise must be marked with `void` to show it is deliberate.
+  // To know which calls return a promise, this rule needs type information, so the
+  // `project` option below runs the TypeScript type-checker over source while linting.
+  // That makes linting source slower. Tests are excluded: they leave promises unawaited
+  // freely.
+  {
+    files: ['src/**/*.ts'],
+    languageOptions: {
+      parser: tsParser,
+      parserOptions: {
+        project: './tsconfig.json',
+        tsconfigRootDir: __dirname,
+      },
+    },
+    rules: {
+      '@typescript-eslint/no-floating-promises': 'error',
     },
   },
 ]);

scripts/deployment-update-symlink.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# `yarn deployment-update` — point the manual-test Home Assistant instance at
+# `yarn deployment-update` -- point the manual-test Home Assistant instance at
 # this worktree.
 #
 # Repoints the `$ACC_LIVE_LINK` symlink (the dev static server's document root)
@@ -9,7 +9,7 @@
 set -euo pipefail
 
 if [[ -z "${ACC_LIVE_LINK:-}" ]]; then
-  echo "ACC_LIVE_LINK is not set — point it at the symlink to update." >&2
+  echo "ACC_LIVE_LINK is not set -- point it at the symlink to update." >&2
   exit 1
 fi
 
@@ -18,4 +18,4 @@ mkdir -p "$(dirname "$ACC_LIVE_LINK")"
 ln -sfn "$TARGET" "$ACC_LIVE_LINK"
 
 echo "Advanced Camera Card → $TARGET"
-[[ -d "$TARGET" ]] || echo "(no dist/ here yet — run \`yarn start\` to build it)"
+[[ -d "$TARGET" ]] || echo "(no dist/ here yet -- run \`yarn start\` to build it)"

src/card-controller/actions/actions/effect.ts

@@ -9,13 +9,13 @@ export class EffectAction extends AdvancedCameraCardAction<EffectActionConfig> {
     const action = this._getAction();
     switch (action.effect_action) {
       case 'start':
-        api.getEffectsManager().startEffect(action.effect);
+        void api.getEffectsManager().startEffect(action.effect);
         break;
       case 'stop':
         api.getEffectsManager().stopEffect(action.effect);
         break;
       case 'toggle':
-        api.getEffectsManager().toggleEffect(action.effect);
+        void api.getEffectsManager().toggleEffect(action.effect);
         break;
     }
   }

src/card-controller/actions/actions/ptz-controls.ts

@@ -11,7 +11,7 @@ export class PTZControlsAction extends AdvancedCameraCardAction<PTZControlsActio
 
     // If `enabled` is explicit, use it. If only `type` is being changed, leave
     // `enabled` untouched (undefined = no change). Otherwise (neither set),
-    // toggle the current enabled value — this is the menu-button show/hide use
+    // toggle the current enabled value -- this is the menu-button show/hide use
     // case.
     const enabled =
       action.enabled ??

src/card-controller/actions/actions/ptz-multi.ts

@@ -28,9 +28,8 @@ export class PTZMultiAction extends AdvancedCameraCardAction<PTZMultiActionConfi
       return;
     }
 
-    (type === 'ptz'
-      ? this._toPTZAction(targetID)
-      : this._toPTZDigitalAction(targetID)
+    void (
+      type === 'ptz' ? this._toPTZAction(targetID) : this._toPTZDigitalAction(targetID)
     ).execute(api);
   }
 

src/card-controller/automations-manager.ts

@@ -106,6 +106,6 @@ export class AutomationsManager {
         --this._nestedAutomationExecutions;
       }
     };
-    runActions(automation.actions);
+    void runActions(automation.actions);
   }
 }

src/card-controller/call/manager.ts

@@ -285,7 +285,7 @@ export class CallManager {
       restoreView &&
       (previousView.view !== 'live' || previousView.camera !== call.cameraID)
     ) {
-      viewManager.setViewByParametersWithExistingQuery({
+      void viewManager.setViewByParametersWithExistingQuery({
         baseView: previousView,
         force: true,
       });

src/card-controller/call/tones/base.ts

@@ -63,7 +63,7 @@ export abstract class GeneratedTone implements Tone {
   // a stopped tone can never re-arm its loop.
   protected _scheduleNext(intervalSeconds: number): void {
     /* istanbul ignore next: defensive guard against a subclass calling
-       _scheduleNext after stop() — JS single-threading makes this unreachable
+       _scheduleNext after stop() -- JS single-threading makes this unreachable
        from the existing subclasses -- @preserve */
     if (!this._context) {
       return;

src/card-controller/card-element-manager.ts

@@ -79,8 +79,8 @@ export class CardElementManager {
     // These initializers are called when the config is updated, but on initial
     // creation of the card hass is not yet available when the config is first
     // loaded.
-    this._api.getDefaultManager().initialize();
-    this._api.getMediaPlayerManager().initialize();
+    void this._api.getDefaultManager().initialize();
+    void this._api.getMediaPlayerManager().initialize();
 
     this._api
       .getHASSManager()
@@ -184,7 +184,7 @@ export class CardElementManager {
     this._api.getFullscreenManager().disconnect();
     this._api.getPIPManager().uninitialize();
     this._api.getKeyboardStateManager().uninitialize();
-    this._api.getActionsManager().uninitialize();
+    void this._api.getActionsManager().uninitialize();
     this._api.getInteractionManager().uninitialize();
     this._api.getDefaultManager().uninitialize();
     this._api.getHASSManager().getStateWatcher()?.unsubscribe(this.update);
@@ -200,7 +200,7 @@ export class CardElementManager {
     this._api
       .getInitializationManager()
       .uninitialize(InitializationAspect.INITIAL_TRIGGER);
-    this._api.getCameraManager().destroy();
+    void this._api.getCameraManager().destroy();
 
     this._element.removeEventListener(
       'mousemove',

src/card-controller/config/config-manager.ts

@@ -154,7 +154,7 @@ export class ConfigManager {
     // automations, which destroys associated ConditionsManagers. If a condition
     // transition (e.g. microphone connect) triggers both a user automation and
     // an unrelated override, an unconditional reload would delete the
-    // automation mid-transition — the freshly created replacement has no prior
+    // automation mid-transition -- the freshly created replacement has no prior
     // state, treats the current condition as its baseline, and never fires the
     // action.
     const runIfChanged = <T>(
@@ -189,7 +189,7 @@ export class ConfigManager {
       (config) => [config.cameras, config.cameras_global],
       () => {
         this._api.getInitializationManager().uninitialize(InitializationAspect.CAMERAS);
-        this._api.getCameraManager().destroy();
+        void this._api.getCameraManager().destroy();
       },
       true,
     );
@@ -203,7 +203,7 @@ export class ConfigManager {
       true,
     );
 
-    /* async */ this._initializeBackgroundAndUpdate(previousConfig);
+    void this._initializeBackgroundAndUpdate(previousConfig);
   }
 
   /**

src/card-controller/config/overrides-manager.ts

@@ -92,7 +92,7 @@ export class OverridesManager {
 
     const parseResult = advancedCameraCardConfigSchema.safeParse(output);
     if (!parseResult.success) {
-      // Surface one co-located failure object per Zod issue — path, the value
+      // Surface one co-located failure object per Zod issue -- path, the value
       // the user actually wrote, and the most informative "expected" field for
       // this issue code. Avoids dumping the full merged config (which is
       // mostly schema defaults the user never wrote) and keeps the reader from

src/card-controller/effects/effects-manager.ts

@@ -166,7 +166,7 @@ export class EffectsManager implements EffectsManagerInterface {
   private _startPendingEffects(): void {
     for (const [name, options] of this._pendingEffects.entries()) {
       this._pendingEffects.delete(name);
-      this._startEffect(name, options);
+      void this._startEffect(name, options);
     }
   }
 }

src/card-controller/fullscreen/screenfull/index.ts

@@ -32,9 +32,12 @@ export class ScreenfullFullScreenProvider
     }
 
     if (fullscreen) {
-      screenfull.request(this._api.getCardElementManager().getElement());
+      // A denied request (or an exit when not in fullscreen) leaves the UI
+      // consistent: the 'change' handler only fires on a real transition.
+      // Nothing to act on.
+      screenfull.request(this._api.getCardElementManager().getElement()).catch(() => {});
     } else {
-      screenfull.exit();
+      screenfull.exit().catch(() => {});
     }
   }
 }

src/card-controller/fullscreen/webkit/index.ts

@@ -85,7 +85,10 @@ export class WebkitFullScreenProvider
     // clicking the 'X' which then fires this event). That's probably the rare
     // case though.
     this._playTimer.start(WEBKIT_PLAY_SECONDS, () => {
-      this._getVideoElement()?.play();
+      // Best-effort resume after a fullscreen exit.
+      this._getVideoElement()
+        ?.play()
+        .catch(() => {});
     });
   };
 }

src/card-controller/hass/hass-manager.ts

@@ -61,7 +61,7 @@ export class HASSManager implements HASSManagerReadonlyInterface {
       );
 
       this._api.getInitializationManager().uninitialize(InitializationAspect.CAMERAS);
-      this._api.getCameraManager().destroy();
+      void this._api.getCameraManager().destroy();
       this._api.getInitializationManager().uninitialize(InitializationAspect.VIEW);
       this._api
         .getInitializationManager()

src/card-controller/initialization-manager.ts

@@ -80,7 +80,7 @@ export class InitializationManager {
     if (!this._shouldInitializeMandatory()) {
       return;
     }
-    /* async */ this.initializeMandatory();
+    void this.initializeMandatory();
   }
 
   private _shouldInitializeMandatory(): boolean {

src/card-controller/issues/issue-manager.ts

@@ -29,7 +29,7 @@ export class IssueManager {
   private _suspended = false;
 
   // Reentrancy guard: evaluate() calls setState() on the condition state
-  // manager, which fires listeners synchronously — including the one
+  // manager, which fires listeners synchronously -- including the one
   // registered in this constructor. Without this guard, detectDynamic()
   // and presence computation would run twice per evaluation.
   private _evaluating = false;
@@ -165,16 +165,14 @@ export class IssueManager {
   // normal re-evaluation (on any condition-state change).
   //
   // `initialized: true` in the change payload means mandatory initialization
-  // just finished — see InitializationManager._initializeMandatory. That's
+  // just finished -- see InitializationManager._initializeMandatory. That's
   // also the earliest point at which the full HASS object is guaranteed
   // ready for websocket calls (e.g. LegacyResourceIssue's lovelace/resources
   // fetch). Because `initialized` is latched (its comment notes it never
   // changes again), this block fires exactly once per IssueManager life.
   private _onStateChange(change: ConditionStateChange): void {
     if (change.change.initialized === true && change.new.hass) {
-      /* async */ this._stateManager
-        .detectStatic(change.new.hass)
-        .then(() => this.evaluate());
+      void this._stateManager.detectStatic(change.new.hass).then(() => this.evaluate());
     }
     this.evaluate();
   }

src/card-controller/issues/issues/connection.ts

@@ -19,7 +19,7 @@ export class ConnectionIssue implements Issue {
   private _state: ConnectionState = 'ready';
 
   public detectDynamic(state: ConditionState): void {
-    // Before HASS is ever provided, leave state untouched — undefined hass is
+    // Before HASS is ever provided, leave state untouched -- undefined hass is
     // not a disconnection, just "not yet initialized".
     if (state.hass === undefined) {
       return;

src/card-controller/issues/issues/initialization.ts

@@ -44,7 +44,7 @@ export class InitializationIssue extends AbstractErrorIssue {
     // resources (WebSocket subscriptions, listeners) before the CAMERAS
     // init aspect replaces the instance via createCameraManager().
     this._api.getInitializationManager().uninitializeMandatory();
-    this._api.getCameraManager().destroy();
+    void this._api.getCameraManager().destroy();
     return false;
   }
 

src/card-controller/issues/issues/media-load.ts

@@ -37,7 +37,7 @@ export class MediaLoadIssue implements Issue {
   }
 
   // =========================================================================
-  // Explicit trigger — called when a component fires an issue:trigger event.
+  // Explicit trigger -- called when a component fires an issue:trigger event.
   // =========================================================================
 
   public trigger(context: IssueTriggerContext['media_load']): void {
@@ -45,7 +45,7 @@ export class MediaLoadIssue implements Issue {
   }
 
   // =========================================================================
-  // Detection — called by the manager on every state change.
+  // Detection -- called by the manager on every state change.
   // =========================================================================
 
   public detectDynamic(state: ConditionState): void {
@@ -62,7 +62,7 @@ export class MediaLoadIssue implements Issue {
   }
 
   // =========================================================================
-  // State queries — called by the manager to read current state.
+  // State queries -- called by the manager to read current state.
   // =========================================================================
 
   public hasIssue(): boolean {
@@ -113,7 +113,7 @@ export class MediaLoadIssue implements Issue {
   }
 
   // =========================================================================
-  // Retry — called by the manager to schedule a media reload.
+  // Retry -- called by the manager to schedule a media reload.
   // =========================================================================
 
   public needsRetry(): boolean {
@@ -144,7 +144,7 @@ export class MediaLoadIssue implements Issue {
     // re-attempts loading underneath. If the retry succeeds,
     // _handleMediaLoaded will clear everything when media:loaded fires. If
     // it fails silently (e.g. bogus stream name), the error stays visible
-    // immediately — no new 10s grace period.
+    // immediately -- no new 10s grace period.
     this._api.getViewManager().setViewWithMergedContext({ mediaEpoch });
     return false;
   }
@@ -212,7 +212,7 @@ export class MediaLoadIssue implements Issue {
       this._timerTargetID = targetID;
       this._timer.start(MEDIA_LOADING_TIMEOUT_SECONDS, () => {
         // Record the error on timeout so retry() knows which epoch to bump.
-        // targetID is guaranteed non-null here — the null case bails at the
+        // targetID is guaranteed non-null here -- the null case bails at the
         // top of _handleMediaNotLoaded.
         this._erroredTargetIDs.add(targetID);
         this._activate();

src/card-controller/issues/issues/media-query.ts

@@ -31,7 +31,7 @@ export class MediaQueryIssue extends AbstractErrorIssue {
       return false;
     }
     this._error = null;
-    this._api.getViewManager().setViewByParametersWithNewQuery();
+    void this._api.getViewManager().setViewByParametersWithNewQuery();
 
     // Exclusive retry. No other issue should attempt to retry until the next
     // evaluation cycle, when we'll know if this was successful.

src/card-controller/issues/state-manager.ts

@@ -3,7 +3,7 @@ import { summarizeNotification } from '../../components-lib/notification/summari
 import { ConditionState } from '../../condition-trigger/conditions/types';
 import { Notification } from '../../config/schema/actions/types';
 import { HomeAssistant } from '../../ha/types';
-import { isTruthy } from '../../utils/basic';
+import { errorToConsole, isTruthy } from '../../utils/basic';
 import {
   Issue,
   IssueDescription,
@@ -27,12 +27,18 @@ export class IssueStateManager implements IssueReadOnlyState {
   }
 
   // =========================================================================
-  // Detection — static (one-shot on init) and dynamic (on every state change).
+  // Detection -- static (one-shot on init) and dynamic (on every state change).
   // =========================================================================
 
   public async detectStatic(hass: HomeAssistant): Promise<void> {
     for (const issue of this._issues.values()) {
-      await issue.detectStatic?.(hass);
+      try {
+        await issue.detectStatic?.(hass);
+      } catch (e) {
+        // Isolate one issue's detection failure so it cannot abort detection
+        // for the rest; log so the cause is visible.
+        errorToConsole(e as Error);
+      }
       this._logIfNew(issue);
     }
   }
@@ -57,7 +63,7 @@ export class IssueStateManager implements IssueReadOnlyState {
   }
 
   // =========================================================================
-  // Queries — read active issue state.
+  // Queries -- read active issue state.
   // =========================================================================
 
   public getFullCardIssue(): IssueDescription | null {

src/card-controller/issues/types.ts

@@ -28,11 +28,11 @@ export interface KeyedIssueDescription {
 }
 
 // Map of currently active issues keyed by IssueKey, with each entry's value
-// being the issue's current rendered description. Stored as a Map (not just
-// a Set of keys) so that sub-state changes within an issue — e.g.
-// ConnectionIssue swapping between 'lost' and 'starting' — are reflected as
-// real value-level diffs to the condition state, triggering re-renders and
-// any user-defined conditions that depend on issue state.
+// being the issue's current rendered description. Stored as a Map (not just a
+// Set of keys) so that sub-state changes within an issue -- e.g.
+// ConnectionIssue swapping between 'lost' and 'starting' -- are reflected as
+// real value-level diffs to the condition state, triggering re-renders and any
+// user-defined conditions that depend on issue state.
 export type IssuePresence = Map<IssueKey, IssueDescription>;
 export interface IssueReadOnlyState {
   hasFullCardIssue(): boolean;
@@ -80,7 +80,7 @@ export interface Issue {
   // loop (exclusive), false to allow subsequent issues to also retry.
   retry?(): boolean;
 
-  // Optional user-initiated fix. Not called by the issue infrastructure —
+  // Optional user-initiated fix. Not called by the issue infrastructure --
   // callers (e.g. notification control actions) invoke this directly.
   fix?(hass: HomeAssistant): Promise<boolean>;
 
@@ -92,11 +92,11 @@ export interface Issue {
 
   // Called when the card is detached. Issues with age-based timers (e.g.
   // loading-timeout timers) must stop them here so that time spent offscreen
-  // doesn't count against the user. Must preserve already-active issue state
-  // — a full-card issue visible at detach should still be visible on
-  // reattach. No `resume` hook: IssueManager.resume() triggers a normal
-  // evaluate(), so any timer that should restart is re-armed via
-  // detectDynamic against the current condition state.
+  // doesn't count against the user. Must preserve already-active issue state --
+  // a full-card issue visible at detach should still be visible on reattach. No
+  // `resume` hook: IssueManager.resume() triggers a normal evaluate(), so any
+  // timer that should restart is re-armed via detectDynamic against the current
+  // condition state.
   suspend?(): void;
 
   // Release external resources (e.g. a listener registered on another manager)

src/card-controller/lock/call-policy.ts

@@ -10,8 +10,8 @@ import type { LockPolicy } from './types';
 //   - Stream-stopping / re-init actions: pause, reload, and casting (which
 //     rehosts the stream to a media player).
 //
-// `call_start` is intentionally absent — it's the entry into the lock.
-// `call_end` is also absent — it dispatches via `setViewByParameters({ force:
+// `call_start` is intentionally absent -- it's the entry into the lock.
+// `call_end` is also absent -- it dispatches via `setViewByParameters({ force:
 // true })` to bypass the lock, so listing it here would be redundant.
 const CALL_DISRUPTIVE_ACTIONS: ReadonlySet<string> = new Set([
   // View / camera / substream changes.

src/card-controller/media-info-manager.ts

@@ -27,7 +27,7 @@ export class MediaLoadedInfoManager {
   // never cleared by `clear` / `_clearTarget`, only by `initialize`.
   private _lastKnown: Map<string, MediaLoadedInfo> = new Map();
 
-  // The currently "active" target — the one whose info drives condition state
+  // The currently "active" target -- the one whose info drives condition state
   // and card-level side effects. Driven by ViewManager on every view change.
   private _selected: string | null = null;
 

src/card-controller/query-string-manager.ts

@@ -17,8 +17,8 @@ interface QueryStringViewIntent {
 
     // The substream change to apply alongside the view. Tri-state:
     //   - `undefined`: no substream URL action present, no modifier issued.
-    //   - `string`:    `substream_on=X` — engage stream X.
-    //   - `null`:      `substream_off` — explicitly clear the override.
+    //   - `string`:    `substream_on=X` -- engage stream X.
+    //   - `null`:      `substream_off` -- explicitly clear the override.
     stream?: string | null;
   };
   other?: AdvancedCameraCardCustomActionConfig[];

src/card-controller/view/view-manager.ts

@@ -126,7 +126,7 @@ export class ViewManager implements ViewManagerInterface {
         ...options,
       });
       // A non-throwing factory call clears any prior view_incompatible /
-      // media_query state — ensures a previously-dismissed mid-session popup
+      // media_query state -- ensures a previously-dismissed mid-session popup
       // does not linger invisibly and re-pop on the next evaluation cycle,
       // and that a stale media_query failure from an abandoned gallery /
       // viewer doesn't follow the user into an unrelated view.
@@ -361,7 +361,7 @@ export class ViewManager implements ViewManagerInterface {
     if (!this._api.getQueryStringManager().hasViewRelatedActionsToRun()) {
       // This is not awaited to allow the initialization to complete before the
       // query is answered.
-      this.setViewDefaultWithNewQuery({ failSafe: true });
+      void this.setViewDefaultWithNewQuery({ failSafe: true });
     }
   };
 

src/card.ts

@@ -329,7 +329,7 @@ class AdvancedCameraCard extends LitElement {
 
   protected updated(): void {
     if (this._controller.getInitializationManager().isInitializedMandatory()) {
-      this._controller.getQueryStringManager().executeIfNecessary();
+      void this._controller.getQueryStringManager().executeIfNecessary();
     }
   }
 

src/components-lib/live/microphone-actions-controller.ts

@@ -56,7 +56,7 @@ export class MicrophoneActionsController {
     }
     this._callAnswered = answered;
     if (answered) {
-      this._unmuteIfConfigured('call');
+      void this._unmuteIfConfigured('call');
     } else {
       this._muteIfConfigured('call');
     }
@@ -106,7 +106,10 @@ export class MicrophoneActionsController {
       this._options?.microphoneManager &&
       this._options.autoUnmuteConditions?.includes(condition)
     ) {
-      await this._options.microphoneManager.unmute();
+      // A denied or missing microphone already shows in the UI: the menu
+      // microphone button switches to its forbidden icon. A failed auto-unmute
+      // has nothing more to act on.
+      await this._options.microphoneManager.unmute().catch(() => {});
     }
   }
 

src/components-lib/media-actions-controller.ts

@@ -68,7 +68,7 @@ export class MediaActionsController {
   public setMicrophoneState(state: MicrophoneState): void {
     const previous = this._microphoneState;
     this._microphoneState = state;
-    this._microphoneStateChangeHandler(previous, state);
+    void this._microphoneStateChangeHandler(previous, state);
   }
 
   // Audio-out auto-mute/unmute driven by call answer: unmute when the call
@@ -85,10 +85,10 @@ export class MediaActionsController {
     this._callAnswered = answered;
     if (answered) {
       this._pendingCallStartAction = true;
-      this._applyPendingCallStartAction();
+      void this._applyPendingCallStartAction();
     } else {
       this._pendingCallStartAction = false;
-      this._muteTargetIfConfigured('call');
+      void this._muteTargetIfConfigured('call');
     }
   }
 

src/components-lib/media-filter-controller.ts

@@ -260,7 +260,7 @@ export class MediaFilterController {
     const queryCameraIDs = query.getAllCameraIDs();
     const cameraID = queryCameraIDs.size === 1 ? [...queryCameraIDs][0] : undefined;
 
-    this._viewManager?.setViewByParametersWithExistingQuery({
+    void this._viewManager?.setViewByParametersWithExistingQuery({
       params: {
         query,
         // If single camera, set it as the active camera for menu navigation

src/components-lib/media-loaded-info-sink-controller.ts

@@ -9,7 +9,7 @@ interface MediaLoadedInfoSinkConfig {
   // notification.
   getTargetID: () => string | null;
 
-  // Fires when the active info changes — i.e. when the active target's entry
+  // Fires when the active info changes -- i.e. when the active target's entry
   // transitions (load arrives, abort, or selection changes the active entry).
   // Loads for other targets are cached but do not fire the callback.
   callback?: (info: MediaLoadedInfo | null) => void;
@@ -28,7 +28,7 @@ interface MediaLoadedInfoSinkConfig {
  * user selects a slide whose media has already loaded, the sink immediately
  * exposes the cached entry.
  *
- * Lifecycle asymmetry — `callback` fires on:
+ * Lifecycle asymmetry -- `callback` fires on:
  *  - the active target's load arrival,
  *  - the active target's source aborting (with `null`), and
  *  - selection changing to / from a target whose active info differs.
@@ -46,7 +46,7 @@ export class MediaLoadedInfoSinkController implements ReactiveController {
   // stale abort can't blow away an entry that's since been overwritten.
   private _byTarget = new Map<string, MediaLoadedInfo>();
 
-  // The targetID whose info we last surfaced — drives `hostUpdated` change
+  // The targetID whose info we last surfaced -- drives `hostUpdated` change
   // detection. `_lastActiveInfo` records what the callback last saw, so we
   // don't fire it for no-op selection changes (e.g. selection changes but
   // both old and new are null/loaded with the same info reference).
@@ -67,7 +67,7 @@ export class MediaLoadedInfoSinkController implements ReactiveController {
   }
 
   public hostUpdated(): void {
-    // Detect selection changes — `getTargetID` is owned by the host and may
+    // Detect selection changes -- `getTargetID` is owned by the host and may
     // flip when its props change (carousel slide change, view change, etc.).
     const newID = this._config.getTargetID();
     if (newID !== this._lastActiveTargetID) {

src/components-lib/media-loaded-info-source-controller.ts

@@ -53,7 +53,7 @@ export class MediaLoadedInfoSourceController implements ReactiveController {
   private _abort: AbortController | null = null;
 
   // Survives disconnect so we can re-dispatch on reconnect. Only ever holds
-  // info validated by `set` — i.e., always has a targetID.
+  // info validated by `set` -- i.e., always has a targetID.
   private _lastSet: TargetedMediaLoadedInfo | null = null;
 
   constructor(
@@ -67,7 +67,7 @@ export class MediaLoadedInfoSourceController implements ReactiveController {
 
   public hostConnected(): void {
     // Two early-returns:
-    //  - `!_lastSet`: nothing to replay — either the host has never seen a
+    //  - `!_lastSet`: nothing to replay -- either the host has never seen a
     //    media load or the cache was discarded as stale on a prior reconnect
     //    (see below).
     //  - `_abort` non-null: a dispatch is already live, meaning we're already
@@ -79,7 +79,7 @@ export class MediaLoadedInfoSourceController implements ReactiveController {
       return;
     }
 
-    // Revalidate against the current targetID — the host's property may have
+    // Revalidate against the current targetID -- the host's property may have
     // flipped while we were disconnected. Replaying the cached info under a
     // stale targetID would misregister with the manager.
     if (this._lastSet.targetID === this._config.getTargetID()) {

src/components-lib/navigation.ts

@@ -55,7 +55,7 @@ export const navigateUp = (options?: FolderNavigationParamaters | null): void =>
     },
   );
 
-  options?.viewManagerEpoch.manager.setViewByParametersWithExistingQuery({
+  void options?.viewManagerEpoch.manager.setViewByParametersWithExistingQuery({
     params: { query },
   });
 };
@@ -77,7 +77,7 @@ export const navigateToFolder = (
     },
   );
 
-  options?.viewManagerEpoch?.manager.setViewByParametersWithExistingQuery({
+  void options?.viewManagerEpoch?.manager.setViewByParametersWithExistingQuery({
     params: { query },
   });
 };

src/components-lib/ptz/drag-controller.ts

@@ -48,7 +48,7 @@ export class PTZDragController implements ReactiveController {
   // continuous mode. Below that threshold, drag-end dispatches relative.
   private _continuous = false;
 
-  // When a pinch occurs mid-drag, the drag is "poisoned" — all remaining
+  // When a pinch occurs mid-drag, the drag is "poisoned" -- all remaining
   // drag events for that gesture are ignored to prevent stray pan/tilt.
   private _dragCancelledByPinch = false;
 

src/components-lib/signed-url-controller.ts

@@ -64,7 +64,7 @@ export class SignedURLController implements ReactiveController {
 
     // When the endpoint requires signing or proxying, the URL must go through
     // the async resolution path. For proxied URLs, under no circumstances
-    // should we fall back to returning the unproxied URL — doing so risks
+    // should we fall back to returning the unproxied URL -- doing so risks
     // leaking traffic or causing mixed-content errors.
     if (options.proxyConfig?.enabled || options.endpoint?.sign) {
       return this._value;

src/components-lib/timeline/controller.ts

@@ -408,7 +408,7 @@ export class TimelineController {
         this._setTargetBarAppropriately(targetTime);
       }
 
-      this._throttledSetViewDuringRangeChange(targetTime, properties);
+      void this._throttledSetViewDuringRangeChange(targetTime, properties);
     }
   }
 

src/components/image-updating-player.ts

@@ -112,7 +112,7 @@ export class AdvancedCameraCardImageUpdatingPlayer
     () => dispatchMediaPlayEvent(this),
     () => dispatchMediaPauseEvent(this),
     // Clear image load errors on each timer tick so the next render retries
-    // the <img> — but only for modes where the underlying URL genuinely
+    // the <img> -- but only for modes where the underlying URL genuinely
     // changes between ticks (camera/entity snapshots). For mode: url, the
     // same static URL will fail the same way every time, so clearing the
     // error just causes a visible flicker (notification → blank <img> →

src/components/live/carousel.ts

@@ -233,7 +233,7 @@ export class AdvancedCameraCardLiveCarousel extends LitElement {
 
   private _setViewCameraID(cameraID?: string | null): void {
     if (cameraID) {
-      this.viewManagerEpoch?.manager.setViewByParametersWithNewQuery({
+      void this.viewManagerEpoch?.manager.setViewByParametersWithNewQuery({
         params: {
           camera: cameraID,
         },
@@ -319,9 +319,9 @@ export class AdvancedCameraCardLiveCarousel extends LitElement {
     const controller = this._mediaLoadedInfoSinkController.get()?.mediaPlayerController;
     // Fire-and-forget; the `volumechange` event drives the re-render.
     if (controller?.isMuted()) {
-      controller.unmute();
+      void controller.unmute();
     } else {
-      controller?.mute();
+      void controller?.mute();
     }
   }
 
@@ -478,7 +478,7 @@ export class AdvancedCameraCardLiveCarousel extends LitElement {
     const selectedCameraIndex = this._getSelectedCameraIndex();
 
     if (this.viewFilterCameraID) {
-      this._mediaActionsController.setTarget(
+      void this._mediaActionsController.setTarget(
         selectedCameraIndex,
         // Camera in this carousel is only selected if the camera from the
         // view matches the filtered camera.
@@ -486,7 +486,7 @@ export class AdvancedCameraCardLiveCarousel extends LitElement {
       );
     } else {
       // Carousel is not filtered, so the targeted camera is always selected.
-      this._mediaActionsController.setTarget(selectedCameraIndex, true);
+      void this._mediaActionsController.setTarget(selectedCameraIndex, true);
     }
 
     this._mediaHeightController.setSelected(selectedCameraIndex);

src/components/live/grid.ts

@@ -103,7 +103,7 @@ export class AdvancedCameraCardLiveGrid extends LitElement {
 
   protected willUpdate(changedProps: PropertyValues): void {
     if (changedProps.has('viewManagerEpoch') && this._needsGrid()) {
-      import('../media-grid.js');
+      void import('../media-grid.js');
     }
   }
 

src/components/live/index.ts

@@ -81,7 +81,7 @@ export class AdvancedCameraCardLive extends LitElement {
       // from a hidden live view. Treat the live view as having no selected
       // camera unless it is the active view.
       const view = this.viewManagerEpoch?.manager.getView();
-      this._microphoneActionsController.setSelectedCamera(
+      void this._microphoneActionsController.setSelectedCamera(
         view?.is('live') ? view.camera ?? null : null,
       );
     }

src/components/live/providers/go2rtc/index.ts

@@ -140,7 +140,7 @@ export class AdvancedCameraCardGo2RTC extends LitElement implements MediaPlayer
       // VideoRTC owns the transition: it updates microphoneStream, swaps the
       // track on the pre-armed transceiver, and validates against stale async
       // completions before any reconnect fallback. Fire-and-forget is fine.
-      /* async */ this._player.setMicrophoneStream(this.microphoneStream ?? null);
+      void this._player.setMicrophoneStream(this.microphoneStream ?? null);
     }
   }
 

src/components/live/providers/go2rtc/video-rtc.js

@@ -271,7 +271,7 @@ export class VideoRTC extends HTMLElement {
   /**
    * Owns the microphone stream transition end-to-end: updates the property,
    * extracts the outbound audio track, and swaps it onto the pre-armed audio
-   * transceiver via `replaceTrack` — no SDP renegotiation, no visible reload.
+   * transceiver via `replaceTrack` -- no SDP renegotiation, no visible reload.
    *
    * Falls back to a full reconnect if `replaceTrack` rejects, but only when
    * the rejection still describes the current desired state. The transceiver
@@ -410,8 +410,8 @@ export class VideoRTC extends HTMLElement {
    */
   disconnectedCallback() {
     // Synchronous manager-side cleanup by aborting the load's signal. The
-    // signal's abort listeners — registered by the card-root listener and
-    // any sinks in the bubble path — fire even though `parentNode` is
+    // signal's abort listeners -- registered by the card-root listener and
+    // any sinks in the bubble path -- fire even though `parentNode` is
     // already null, because abort is plain JS, not DOM-event-bound.
     this._abortController?.abort();
     this._abortController = null;
@@ -833,7 +833,7 @@ export class VideoRTC extends HTMLElement {
     // Always pre-arm a single outbound audio transceiver so the SDP advertises
     // the slot from the start. With the slot in place, the mic track can be
     // attached/detached later via `setMicrophoneStream` (replaceTrack) without
-    // renegotiating — avoiding a visible reload of this cell each time grid
+    // renegotiating -- avoiding a visible reload of this cell each time grid
     // selection moves the mic between cameras.
     //
     // Pure SDP allocation: the kind-only `addTransceiver('audio', ...)` form

src/components/live/providers/webrtc-card.ts

@@ -200,7 +200,7 @@ export class AdvancedCameraCardLiveWebRTCCard extends LitElement implements Medi
   public updated(): void {
     // Extract the video component after it has been rendered and generate the
     // media load event.
-    this.updateComplete.then(() => {
+    void this.updateComplete.then(() => {
       this._videoRTC = this.renderRoot?.querySelector('#webrtc') ?? null;
       const video = this._getVideo();
       if (video) {

src/components/loading.ts

@@ -60,7 +60,7 @@ export class AdvancedCameraCardLoading extends LitElement {
   }
 
   private _startEffect(effect: EffectName): void {
-    this.effectsManager?.startEffect(effect, { fadeIn: false });
+    void this.effectsManager?.startEffect(effect, { fadeIn: false });
     this._effectName = effect;
   }
 

src/components/media-filter.ts

@@ -76,7 +76,7 @@ class AdvancedCameraCardMediaFilter extends ScopedRegistryHost(LitElement) {
         this.cameraManager,
         this.foldersManager,
       );
-      this._mediaFilterController.computeMetadataOptions(this.cameraManager);
+      void this._mediaFilterController.computeMetadataOptions(this.cameraManager);
     }
 
     // The first time the viewManager is set, compute the initial default selections.

src/components/submenu/select-button.ts

@@ -87,7 +87,7 @@ export class AdvancedCameraCardSubmenuSelectButton extends LitElement {
     }
 
     if (!this._optionTitles) {
-      this._refreshOptionTitles();
+      void this._refreshOptionTitles();
     }
 
     const entityID = this.submenuSelect.entity;

src/components/surround.ts

@@ -66,7 +66,7 @@ export class AdvancedCameraCardSurround extends LitElement {
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
   protected willUpdate(_changedProperties: PropertyValues): void {
     if (this.timelineConfig?.mode && this.timelineConfig.mode !== 'none') {
-      import('./timeline-core.js');
+      void import('./timeline-core.js');
     }
   }
 

src/components/thumbnail/feature/thumbnail.ts

@@ -62,7 +62,7 @@ export class AdvancedCameraCardThumbnailFeatureThumbnail extends LitElement {
       this._embedThumbnailTask?.status === TaskStatus.INITIAL &&
       entries.some((entry) => entry.isIntersecting)
     ) {
-      this._embedThumbnailTask?.run();
+      void this._embedThumbnailTask?.run();
     }
   }
 

src/components/timeline-core.ts

@@ -277,7 +277,7 @@ export class AdvancedCameraCardTimelineCore extends LitElement {
         this._controller.setView(this.viewManagerEpoch ?? null),
       );
     } else {
-      this._controller.setView(this.viewManagerEpoch ?? null);
+      void this._controller.setView(this.viewManagerEpoch ?? null);
     }
   }
 

src/components/viewer/carousel.ts

@@ -93,7 +93,7 @@ export class AdvancedCameraCardViewerCarousel extends LitElement {
       (this._selected !== null && this._media?.[this._selected]?.getID()) || null,
     callback: () => {
       this._mediaHeightController.recalculate();
-      this._seekHandler();
+      void this._seekHandler();
     },
   });
 
@@ -388,7 +388,7 @@ export class AdvancedCameraCardViewerCarousel extends LitElement {
           ?.context?.mediaViewer?.seek?.getTime() !==
         this.viewManagerEpoch?.oldView?.context?.mediaViewer?.seek?.getTime()
       ) {
-        this._seekHandler();
+        void this._seekHandler();
       }
     }
   }
@@ -397,7 +397,7 @@ export class AdvancedCameraCardViewerCarousel extends LitElement {
     if (!this._media?.length || this._selected === null) {
       this._mediaActionsController.unsetTarget();
     } else {
-      this._mediaActionsController.setTarget(
+      void this._mediaActionsController.setTarget(
         this._selected,
         // Camera in this carousel is only selected if the camera from the view
         // matches the filtered camera.
@@ -438,16 +438,16 @@ export class AdvancedCameraCardViewerCarousel extends LitElement {
     const seekTimeInMedia = selectedMedia.includesTime(seek);
     this.toggleAttribute('unseekable', !seekTimeInMedia);
     if (!seekTimeInMedia && !mediaPlayerController.isPaused()) {
-      mediaPlayerController.pause();
+      void mediaPlayerController.pause();
     } else if (seekTimeInMedia && mediaPlayerController.isPaused()) {
-      mediaPlayerController.play();
+      void mediaPlayerController.play();
     }
 
     const seekTime =
       (await this.cameraManager?.getMediaSeekTime(selectedMedia, seek)) ?? null;
 
     if (seekTime !== null) {
-      mediaPlayerController.seek(seekTime);
+      void mediaPlayerController.seek(seekTime);
     }
   }
 

src/components/viewer/grid.ts

@@ -72,7 +72,7 @@ export class AdvancedCameraCardViewerGrid extends LitElement {
 
   protected willUpdate(changedProps: PropertyValues): void {
     if (changedProps.has('viewManagerEpoch') && this._needsGrid()) {
-      import('../media-grid.js');
+      void import('../media-grid.js');
     }
   }
 

src/components/viewer/provider.ts

@@ -157,11 +157,11 @@ export class AdvancedCameraCardViewerProvider extends LitElement implements Medi
       changedProps.has('resolvedMediaCache') ||
       changedProps.has('hass')
     ) {
-      this._resolveURL();
+      void this._resolveURL();
     }
 
     if (changedProps.has('viewerConfig') && this.viewerConfig?.zoomable) {
-      import('../zoomer.js');
+      void import('../zoomer.js');
     }
   }
 
@@ -290,7 +290,7 @@ export class AdvancedCameraCardViewerProvider extends LitElement implements Medi
             .targetID=${mediaID}
             @click=${() => {
               if (this.viewerConfig?.snapshot_click_plays_clip) {
-                this._switchToRelatedClipView();
+                void this._switchToRelatedClipView();
               }
             }}
           ></advanced-camera-card-image-player>`}

src/components/views.ts

@@ -90,16 +90,16 @@ export class AdvancedCameraCardViews extends LitElement {
     if (changedProps.has('viewManagerEpoch') || changedProps.has('config')) {
       const view = this.viewManagerEpoch?.manager.getView();
       if (view?.is('live') || this._shouldLivePreload()) {
-        import('./live/index.js');
+        void import('./live/index.js');
       }
       if (view?.isGalleryView()) {
-        import('./gallery/gallery.js');
+        void import('./gallery/gallery.js');
       } else if (view?.isViewerView()) {
-        import('./viewer/index.js');
+        void import('./viewer/index.js');
       } else if (view?.is('image')) {
-        import('./image.js');
+        void import('./image.js');
       } else if (view?.is('timeline')) {
-        import('./timeline.js');
+        void import('./timeline.js');
       }
     }
 

src/condition-trigger/common/time-period.ts

@@ -6,7 +6,7 @@ import { ConditionState } from '../conditions/types';
 // Parses a Home Assistant time-period value (a condition/trigger `for:`) to
 // seconds, matching HA's `cv.time_period`:
 //   - a number, or a bare numeric string, is a count of seconds;
-//   - a colon string is `HH:MM` or `HH:MM:SS` — HA reads TWO parts as
+//   - a colon string is `HH:MM` or `HH:MM:SS` -- HA reads TWO parts as
 //     hours:minutes (not minutes:seconds);
 //   - a `{days, hours, minutes, seconds, milliseconds}` dict (each field a
 //     number or a numeric string, e.g. once a template field has been rendered).

src/config/schema/common/string-or-array.ts

@@ -1,5 +1,5 @@
 import { z } from 'zod';
 
-// A value that may be a single string or a list of strings — common across HA
+// A value that may be a single string or a list of strings -- common across HA
 // condition/trigger fields (e.g. `state`, `to`, `entity_id`).
 export const stringOrArray = z.string().or(z.string().array());

src/editor.ts

@@ -278,9 +278,9 @@ import {
   CONF_VIEW_TRIGGERS_ACTIONS_INTERACTION_MODE,
   CONF_VIEW_TRIGGERS_ACTIONS_TRIGGER,
   CONF_VIEW_TRIGGERS_ACTIONS_UNTRIGGER,
+  CONF_VIEW_TRIGGERS_EVENT_HOLD_SECONDS,
   CONF_VIEW_TRIGGERS_FILTER_SELECTED_CAMERA,
   CONF_VIEW_TRIGGERS_SHOW_TRIGGER_STATUS,
-  CONF_VIEW_TRIGGERS_EVENT_HOLD_SECONDS,
   CONF_VIEW_TRIGGERS_UNTRIGGER_DELAY_SECONDS,
   CONF_VIEW_TRIGGERS_UNTRIGGER_FORCE_SECONDS,
   DOCS_URL,
@@ -294,7 +294,7 @@ import { HomeAssistant, LovelaceCardEditor } from './ha/types.js';
 import { localize } from './localize/localize.js';
 import editorStyle from './scss/editor.scss';
 import type { CapabilityKey } from './types.js';
-import { arrayMove, prettifyTitle } from './utils/basic.js';
+import { arrayMove, errorToConsole, prettifyTitle } from './utils/basic.js';
 import { getCameraID } from './utils/camera.js';
 import { fireAdvancedCameraCardEvent } from './utils/fire-advanced-camera-card-event.js';
 import { getFolderID } from './utils/folder.js';
@@ -1255,9 +1255,13 @@ export class AdvancedCameraCardEditor extends LitElement implements LovelaceCard
 
   protected willUpdate(): void {
     if (!this._initialized) {
-      sideLoadHomeAssistantElements().then(() => {
-        this._initialized = true;
-      });
+      sideLoadHomeAssistantElements()
+        .then(() => {
+          this._initialized = true;
+        })
+        // A failure leaves the editor with degraded HA form elements and is
+        // retried on the next update; log it so the cause is at least visible.
+        .catch((e) => errorToConsole(e));
     }
   }
 

src/ha/web-proxy.ts

@@ -82,7 +82,7 @@ export const createProxiedEndpointIfNecessary = async (
   }
 
   if (proxyConfig.dynamic) {
-    // Strip hash fragment — it's client-side only and not relevant for
+    // Strip hash fragment -- it's client-side only and not relevant for
     // proxy pattern matching.
     const url = endpoint.endpoint.split(/#/)[0];
     await addDynamicProxyURL(hass, url, {

src/patches/ha-camera-stream.ts

@@ -25,7 +25,7 @@ import { onAbort } from '../utils/abort-signal.js';
 import './ha-hls-player.js';
 import './ha-web-rtc-player.js';
 
-customElements.whenDefined('ha-camera-stream').then(() => {
+void customElements.whenDefined('ha-camera-stream').then(() => {
   // ========================================================================================
   // From:
   // - https://github.com/home-assistant/frontend/blob/dev/src/data/camera.ts
@@ -56,7 +56,7 @@ customElements.whenDefined('ha-camera-stream').then(() => {
 
     // ha-camera-stream renders up to three inner players (MJPEG / HLS /
     // WebRTC), only one visible. Inner leaves all fire `media:loaded`
-    // independently — we suppress those at this boundary (`stopPropagation` in
+    // independently -- we suppress those at this boundary (`stopPropagation` in
     // `_captureInnerLoad`), cache the latest per type, and republish the
     // visible one's info via our own source controller in `updated()`.
     private _mediaLoadedInfoPerStream: Record<StreamType, MediaLoadedInfo> = {};

src/patches/ha-hls-player.ts

@@ -32,7 +32,7 @@ import {
 } from '../utils/media-info.js';
 import { ConstructableLitElement } from './types.js';
 
-customElements.whenDefined('ha-hls-player').then(() => {
+void customElements.whenDefined('ha-hls-player').then(() => {
   const HaHlsPlayer = customElements.get('ha-hls-player') as ConstructableLitElement;
 
   @customElement('advanced-camera-card-ha-hls-player')

src/patches/ha-web-rtc-player.ts

@@ -35,7 +35,7 @@ import {
 } from '../utils/media-info.js';
 import { ConstructableLitElement } from './types.js';
 
-customElements.whenDefined('ha-web-rtc-player').then(() => {
+void customElements.whenDefined('ha-web-rtc-player').then(() => {
   const HaWebRtcPlayer = customElements.get(
     'ha-web-rtc-player',
   ) as ConstructableLitElement;

src/scss/live-carousel.scss

@@ -60,7 +60,7 @@
   }
 }
 
-// Transmitting: breathe between a softer and a fuller glow — never fully fades,
+// Transmitting: breathe between a softer and a fuller glow -- never fully fades,
 // so the camera always reads as live.
 @keyframes transmitting-vignette-pulse {
   0%,

src/scss/pop-animation.scss

@@ -1,7 +1,7 @@
 // Shared "pop" enter/exit animation for overlays.
 //
-// `@include pop-in` auto-plays an entrance on render. `@include pop-out` —
-// typically guarded by an `.exiting` class — plays the matching exit; it is
+// `@include pop-in` auto-plays an entrance on render. `@include pop-out` --
+// typically guarded by an `.exiting` class -- plays the matching exit; it is
 // named `pop-out` so an `animationend` handler can detect exit completion and
 // unmount the element.
 

src/types.ts

@@ -43,7 +43,7 @@ export interface MediaLoadedInfo {
   mediaPlayerController?: MediaPlayerController;
   capabilities?: MediaLoadedCapabilities;
 
-  // Universal key identifying "what this media belongs to" — a camera ID for
+  // Universal key identifying "what this media belongs to" -- a camera ID for
   // live, a media ID for the viewer, or a sentinel for the image view.
   targetID?: string;
 }

src/utils/audio.ts

@@ -35,13 +35,13 @@ export const hasAudio = (
   pc?: RTCPeerConnection | null,
   mseCodecs?: string,
 ): boolean => {
-  // For WebRTC: Check if there's an audio receiver with an active track.
-  // We check that the track is not muted because muted means no media data
-  // is flowing (e.g., the source isn't producing audio). It is not related to
-  // the audio being muted by the user on the receiving end.
-  // Only trust receivers when the connection is actually established — a stale
-  // RTCPeerConnection (e.g. WebRTC failed, fell back to MSE) will have
-  // receivers with muted tracks that don't reflect actual media availability.
+  // For WebRTC: Check if there's an audio receiver with an active track. We
+  // check that the track is not muted because muted means no media data is
+  // flowing (e.g., the source isn't producing audio). It is not related to the
+  // audio being muted by the user on the receiving end. Only trust receivers
+  // when the connection is actually established -- a stale RTCPeerConnection
+  // (e.g. WebRTC failed, fell back to MSE) will have receivers with muted
+  // tracks that don't reflect actual media availability.
   // See: https://github.com/dermotduffy/advanced-camera-card/issues/2417
   if (pc && pc.connectionState === 'connected') {
     const receivers = pc.getReceivers();

src/utils/error-context.ts

@@ -1,7 +1,7 @@
 import { AdvancedCameraCardError } from '../types.js';
 
-// Narrows an unknown error to its structured object `context` — non-null and
-// of object type — or null if the error is not an AdvancedCameraCardError or
+// Narrows an unknown error to its structured object `context` -- non-null and
+// of object type -- or null if the error is not an AdvancedCameraCardError or
 // has no usable context. Consolidates the instanceof + typeof + null-guard
 // dance that notification builders and error handlers would otherwise repeat.
 export const getContextFromError = (error: unknown): object | null =>

src/utils/event-ancestor.ts

@@ -1,7 +1,7 @@
 /**
  * Walk up `element`'s ancestor chain (through shadow boundaries) looking for
  * an ancestor with the given tag name. Returns true if one is found and that
- * same element also appears in the event's composedPath — indicating the event
+ * same element also appears in the event's composedPath -- indicating the event
  * originated from within the same subtree as the element.
  */
 export const isAncestorInEventPath = (

src/utils/media-info.ts

@@ -11,10 +11,10 @@ const MEDIA_INFO_HEIGHT_CUTOFF = 50;
 const MEDIA_INFO_WIDTH_CUTOFF = MEDIA_INFO_HEIGHT_CUTOFF;
 
 /**
- * Create a MediaLoadedInfo object. `targetID` is intentionally NOT an option
- * — it's owned by the source controller (`MediaLoadedInfoSourceController`)
- * and injected at dispatch time, so leaves don't have to (and can't) plumb
- * it through info construction.
+ * Create a MediaLoadedInfo object. `targetID` is intentionally NOT an option --
+ * it's owned by the source controller (`MediaLoadedInfoSourceController`) and
+ * injected at dispatch time, so leaves don't have to (and can't) plumb it
+ * through info construction.
  * @param source An event or HTMLElement that should be used as a source.
  * @returns A new info or null if one could not be created.
  */

src/utils/sleep.ts

@@ -1,4 +1,6 @@
 // Usage of this function needs to be justified with a comment.
 export const sleep = async (seconds: number) => {
+  // This is the low-level delay primitive callers reach for instead of a raw timer.
+  // eslint-disable-next-line no-restricted-syntax
   await new Promise((r) => setTimeout(r, seconds * 1000));
 };

src/utils/timer.ts

@@ -19,6 +19,8 @@ export class Timer {
 
   public start(seconds: number, func: () => void): void {
     this.stop();
+    // This class is the sanctioned wrapper for the browser timer APIs.
+    // eslint-disable-next-line no-restricted-syntax
     this._timer = window.setTimeout(() => {
       this._timer = null;
       func();
@@ -28,6 +30,8 @@ export class Timer {
 
   public startRepeated(seconds: number, func: () => void): void {
     this.stop();
+    // This class is the sanctioned wrapper for the browser timer APIs.
+    // eslint-disable-next-line no-restricted-syntax
     this._timer = window.setInterval(() => {
       func();
     }, seconds * 1000);

src/utils/zod/deep-remove-defaults.ts

@@ -76,7 +76,7 @@ function strip(schema: z.ZodType, cache: Map<z.ZodType, z.ZodType>): z.ZodType {
   let result: z.ZodType;
 
   if (schema instanceof z.ZodDefault || schema instanceof z.ZodPrefault) {
-    // Unwrap the default — don't cache the wrapper itself.
+    // Unwrap the default -- don't cache the wrapper itself.
     result = strip(toClassic(schema.unwrap()), cache);
   } else if (schema instanceof z.ZodObject) {
     const newShape: Record<string, z.core.$ZodType> = {};

src/view/target-id.ts

@@ -6,12 +6,12 @@ import { View } from './view';
 // the target-ID namespace. Must not collide with real camera IDs or media IDs.
 export const IMAGE_VIEW_TARGET_ID_SENTINEL = '__IMAGE_VIEW__';
 
-// Returns a universal target identifier for the current view — the single key
+// Returns a universal target identifier for the current view -- the single key
 // used by PTZ/zoom state and media retry epochs to identify "what is currently
 // being displayed." For live, this is the *base* camera ID (substream is an
 // implementation detail of how to play camera X, not a separate logical
-// identity — see `getStreamCameraID` for the substream-aware variant used
-// only inside the playback chain).
+// identity -- see `getStreamCameraID` for the substream-aware variant used only
+// inside the playback chain).
 export const getViewTargetID = (view: View): string | null => {
   if (view.isViewerView()) {
     return view.queryResults?.getSelectedResult()?.getID() ?? null;

tests/action-handler-directive.test.ts

@@ -46,7 +46,7 @@ describe('ActionHandler', () => {
       // A document-level mouseup should cancel the hold timer.
       document.dispatchEvent(new MouseEvent('mouseup'));
 
-      // Advance past hold time — hold should NOT have triggered.
+      // Advance past hold time -- hold should NOT have triggered.
       vi.advanceTimersByTime(500);
 
       element.dispatchEvent(new MouseEvent('click'));

tests/card-controller/actions/actions/ptz.test.ts

@@ -501,7 +501,7 @@ describe('should handle ptz action', () => {
 
       // Emulate the stop being called while the action is running, but before
       // the *next* timer is scheduled.
-      let resolve: () => void;
+      let resolve: () => void = () => {};
       const promise: Promise<void> = new Promise((_resolve) => {
         resolve = _resolve;
       });
@@ -512,7 +512,7 @@ describe('should handle ptz action', () => {
 
       action.stop();
 
-      resolve!();
+      resolve();
       await vi.runOnlyPendingTimersAsync();
 
       // There should be no additional calls.

tests/card-controller/call/tones/custom.test.ts

@@ -10,13 +10,13 @@ interface AudioMocks {
 }
 
 // Uses real jsdom HTMLAudioElement instances and only stubs the parts jsdom
-// can't fulfil (`play()` / `pause()` — no audio backend). Tests then exercise
-// observable behaviour: registered listeners fire via `dispatchEvent`,
-// property writes round-trip on the element, etc.
+// can't fulfil (`play()` / `pause()` -- no audio backend). Tests then exercise
+// observable behaviour: registered listeners fire via `dispatchEvent`, property
+// writes round-trip on the element, etc.
 //
 // Called once at module load. The `beforeEach`/`afterEach` calls inside this
-// helper register Vitest hooks at the file level — Vitest picks them up just
-// as if they had been written at the top of the file — so every test in the
+// helper register Vitest hooks at the file level -- Vitest picks them up just
+// as if they had been written at the top of the file -- so every test in the
 // file gets fresh mocks installed/torn down automatically.
 const useAudioElementMocks = (): AudioMocks => {
   const handle = { instances: [] as HTMLAudioElement[] } as AudioMocks;

tests/card-controller/call/tones/test-utils.ts

@@ -5,8 +5,9 @@ import { mock, MockProxy } from 'vitest-mock-extended';
 // constructs an AudioContext directly; here we stub the global `AudioContext`
 // to return a deep-mocked instance whose `createOscillator()` / `createGain()`
 // factories return a *fresh* mock per call (not a shared one). This lets tests
-// assert against individual notes — e.g. `audio.oscillators[2].frequency.value`
-// — instead of having every call write over the same observable state.
+// assert against individual notes -- e.g.
+// `audio.oscillators[2].frequency.value` -- instead of having every call write
+// over the same observable state.
 interface AudioMocks {
   audioContext: MockProxy<AudioContext>;
   audioContextCtor: Mock<[], MockProxy<AudioContext>>;
@@ -15,7 +16,7 @@ interface AudioMocks {
   oscillators: MockProxy<OscillatorNode>[];
   gains: MockProxy<GainNode>[];
 
-  // gainParams[i] is the AudioParam exposed by `gains[i].gain` — kept as a
+  // gainParams[i] is the AudioParam exposed by `gains[i].gain` -- kept as a
   // parallel array because `mock<GainNode>()` doesn't auto-populate the
   // AudioParam interface as a callable deep mock (we wire it up by hand).
   gainParams: MockProxy<AudioParam>[];
@@ -26,9 +27,9 @@ interface AudioMocks {
 // can read its fields after each `beforeEach` runs.
 //
 // Called once at module load. The `beforeEach`/`afterEach` calls inside this
-// helper register Vitest hooks at the file level — Vitest picks them up just as
-// if they had been written at the top of the file — so every test in the file
-// gets fresh mocks installed/torn down automatically.
+// helper register Vitest hooks at the file level -- Vitest picks them up just
+// as if they had been written at the top of the file -- so every test in the
+// file gets fresh mocks installed/torn down automatically.
 export const useAudioMocks = (): AudioMocks => {
   const audio = {} as AudioMocks;
 
@@ -64,7 +65,7 @@ export const useAudioMocks = (): AudioMocks => {
 
     // The source chains `.catch(...)` on the close() Promise.
     vi.mocked(audio.audioContext.close).mockResolvedValue();
-    // The base class reads `_currentTime` from this — left as a deep-mock spy
+    // The base class reads `_currentTime` from this -- left as a deep-mock spy
     // by default it'd return a function, so anchor it at 0 for predictable
     // scheduling assertions.
     Object.defineProperty(audio.audioContext, 'currentTime', {

tests/card-controller/config/overrides-manager.test.ts

@@ -355,7 +355,7 @@ describe('OverridesManager', () => {
     it('with `invalid_type` surfacing the attempted value', () => {
       const error = runInvalidOverride((config) => {
         assert(config.overrides);
-        // @ts-expect-error — intentionally invalid runtime value to trigger
+        // @ts-expect-error -- intentionally invalid runtime value to trigger
         // Zod's `invalid_type` issue code.
         config.overrides[0].merge = 6;
       });

tests/card-controller/fullscreen/screenfull/index.test.ts

@@ -1,7 +1,7 @@
 import screenfull from 'screenfull';
-import { afterEach, describe, expect, it, vi } from 'vitest';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 import { ScreenfullFullScreenProvider } from '../../../../src/card-controller/fullscreen/screenfull';
-import { createCardAPI, setScreenfulEnabled } from '../../../test-utils';
+import { createCardAPI, flushPromises, setScreenfulEnabled } from '../../../test-utils';
 
 vi.mock('screenfull', () => ({
   default: {
@@ -21,6 +21,11 @@ const setScreenfulFullscreen = (fullscreen: boolean): void => {
 
 // @vitest-environment jsdom
 describe('ScreenfullFullScreenProvider', () => {
+  beforeEach(() => {
+    vi.mocked(screenfull.request).mockResolvedValue();
+    vi.mocked(screenfull.exit).mockResolvedValue();
+  });
+
   afterEach(() => {
     vi.restoreAllMocks();
   });
@@ -158,5 +163,30 @@ describe('ScreenfullFullScreenProvider', () => {
       expect(screenfull.request).not.toBeCalled();
       expect(screenfull.exit).not.toBeCalled();
     });
+
+    it('should swallow a rejected fullscreen request', async () => {
+      setScreenfulEnabled(true);
+      const api = createCardAPI();
+      const element = document.createElement('div');
+      vi.mocked(api.getCardElementManager().getElement).mockReturnValue(element);
+      vi.mocked(screenfull.request).mockRejectedValue(new Error('denied'));
+      const provider = new ScreenfullFullScreenProvider(api, vi.fn());
+
+      provider.setFullscreen(true);
+      await flushPromises();
+
+      expect(screenfull.request).toBeCalledWith(element);
+    });
+
+    it('should swallow a rejected fullscreen exit', async () => {
+      setScreenfulEnabled(true);
+      vi.mocked(screenfull.exit).mockRejectedValue(new Error('not in fullscreen'));
+      const provider = new ScreenfullFullScreenProvider(createCardAPI(), vi.fn());
+
+      provider.setFullscreen(false);
+      await flushPromises();
+
+      expect(screenfull.exit).toBeCalled();
+    });
   });
 });

tests/card-controller/fullscreen/webkit/index.test.ts

@@ -3,7 +3,11 @@ import { mock } from 'vitest-mock-extended';
 import { WebkitFullScreenProvider } from '../../../../src/card-controller/fullscreen/webkit';
 import { ConditionStateManager } from '../../../../src/condition-trigger/conditions/state-manager';
 import { MediaPlayerController, WebkitHTMLVideoElement } from '../../../../src/types';
-import { createCardAPI, createMediaLoadedInfo } from '../../../test-utils';
+import {
+  createCardAPI,
+  createMediaLoadedInfo,
+  flushPromises,
+} from '../../../test-utils';
 
 const createWebkitVideoElement = (): HTMLVideoElement &
   Partial<WebkitHTMLVideoElement> => {
@@ -242,7 +246,7 @@ describe('WebkitFullScreenProvider', () => {
     provider.connect();
 
     const element = createWebkitVideoElement();
-    element.play = vi.fn();
+    element.play = vi.fn().mockResolvedValue(undefined);
 
     const mediaPlayerController = createMediaPlayerController(element);
     vi.mocked(api.getMediaLoadedInfoManager().get).mockReturnValue(
@@ -263,4 +267,30 @@ describe('WebkitFullScreenProvider', () => {
 
     expect(element.play).toBeCalled();
   });
+
+  it('should swallow a rejected video replay after fullscreen ends', async () => {
+    const api = createCardAPI();
+    const stateManager = new ConditionStateManager();
+    vi.mocked(api.getConditionStateManager).mockReturnValue(stateManager);
+
+    const provider = new WebkitFullScreenProvider(api, vi.fn());
+    provider.connect();
+
+    const element = createWebkitVideoElement();
+    element.play = vi.fn().mockRejectedValue(new Error('denied'));
+
+    const mediaPlayerController = createMediaPlayerController(element);
+    vi.mocked(api.getMediaLoadedInfoManager().get).mockReturnValue(
+      createMediaLoadedInfo({ mediaPlayerController }),
+    );
+    stateManager.setState({
+      mediaLoadedInfo: createMediaLoadedInfo({ mediaPlayerController }),
+    });
+
+    element.dispatchEvent(new Event('webkitendfullscreen'));
+    vi.runOnlyPendingTimers();
+    await flushPromises();
+
+    expect(element.play).toBeCalled();
+  });
 });

tests/card-controller/hass/hass-manager.test.ts

@@ -145,7 +145,7 @@ describe('HASSManager', () => {
       startingHASS.config.state = STATE_STARTING;
       manager.setHASS(startingHASS);
 
-      // No reinit yet — HA isn't fully ready.
+      // No reinit yet -- HA isn't fully ready.
       expect(api.getInitializationManager().uninitialize).not.toBeCalled();
       expect(api.getCameraManager().destroy).not.toBeCalled();
 
@@ -176,7 +176,7 @@ describe('HASSManager', () => {
       startingHASS.config.state = STATE_STARTING;
       manager.setHASS(startingHASS);
 
-      // WS came back but integrations still loading — wait for RUNNING.
+      // WS came back but integrations still loading -- wait for RUNNING.
       expect(api.getInitializationManager().uninitialize).not.toBeCalled();
       expect(api.getCameraManager().destroy).not.toBeCalled();
     });
@@ -190,9 +190,9 @@ describe('HASSManager', () => {
       readyHASS.config.state = STATE_RUNNING;
       manager.setHASS(readyHASS);
 
-      // First-ever hass set — there's no "previous not-ready state" to
-      // transition from, so the normal first-load init flow applies and we
-      // must not blow away cameras.
+      // First-ever hass set -- there's no "previous not-ready state" to
+      // transition from, so the normal first-load init flow applies and we must
+      // not blow away cameras.
       expect(api.getInitializationManager().uninitialize).not.toBeCalled();
       expect(api.getCameraManager().destroy).not.toBeCalled();
     });

tests/card-controller/issues/issue-manager.test.ts

@@ -198,11 +198,11 @@ describe('IssueManager', () => {
 
       const manager = new IssueManager(api);
 
-      // hasIssue returns true from the start — simulates trigger() having
-      // already mutated state before detectDynamic snapshots. The
-      // before/after check inside detectDynamic sees true→true (no
-      // transition), but the presence comparison against ConditionState
-      // must still detect the change.
+      // hasIssue returns true from the start -- simulates trigger() having
+      // already mutated state before detectDynamic snapshots. The before/after
+      // check inside detectDynamic sees true→true (no transition), but the
+      // presence comparison against ConditionState must still detect the
+      // change.
       const description = createIssueDescription();
       const issue = createIssue('config_error', {
         hasIssue: vi.fn().mockReturnValue(true),
@@ -219,7 +219,7 @@ describe('IssueManager', () => {
       expect(api.getCardElementManager().update).toBeCalled();
     });
 
-    it('should never auto-popup on trigger — non-full-card issues surface via the status-bar icon; user clicks to open', () => {
+    it('should never auto-popup on trigger -- non-full-card issues surface via the status-bar icon; user clicks to open', () => {
       const api = createCardAPI();
       vi.mocked(api.getConditionStateManager().getState).mockReturnValue({});
 
@@ -250,8 +250,8 @@ describe('IssueManager', () => {
 
       expect(issue.retry).toBeCalled();
 
-      // Timer should have been reset — advancing less than retrySeconds
-      // should not fire it again.
+      // Timer should have been reset -- advancing less than retrySeconds should
+      // not fire it again.
       assert(issue.retry);
       vi.mocked(issue.retry).mockClear();
       vi.advanceTimersByTime(500);
@@ -312,11 +312,11 @@ describe('IssueManager', () => {
     });
 
     it('should call update when an active issue swaps sub-states without changing the key set', () => {
-      // Simulates ConnectionIssue going from 'lost' to 'starting': the
-      // presence key set ({connection}) is identical, but the description
-      // value differs. Because IssuePresence is a Map<key, description>,
-      // the condition state diff sees the value-level change and fires
-      // listeners — the IssueManager's own listener calls update().
+      // Simulates ConnectionIssue going from 'lost' to 'starting': the presence
+      // key set ({connection}) is identical, but the description value differs.
+      // Because IssuePresence is a Map<key, description>, the condition state
+      // diff sees the value-level change and fires listeners -- the
+      // IssueManager's own listener calls update().
       const api = createCardAPI();
 
       // Real ConditionStateManager so its isEqual-based diff actually runs.
@@ -638,7 +638,7 @@ describe('IssueManager', () => {
       const { manager, issue } = createRetriableSetup({ retrySeconds: 'auto' });
       manager.evaluate();
 
-      // Run two retries — second delay should be 2x the first.
+      // Run two retries -- second delay should be 2x the first.
       vi.advanceTimersByTime(RETRY_EXPONENTIAL_BASE_SECONDS * 0.75 * 1000);
       vi.advanceTimersByTime(RETRY_EXPONENTIAL_BASE_SECONDS * 2 * 0.75 * 1000);
       expect(issue.retry).toBeCalledTimes(2);
@@ -671,16 +671,16 @@ describe('IssueManager', () => {
       });
       manager.evaluate();
 
-      // Three gated firings — each at the base delay (22.5s with 0.75 jitter).
-      // If the counter were incrementing on gated fires, the second would be
-      // at 45s and we'd never reach it after only 22.5s.
+      // Three gated firings -- each at the base delay (22.5s with 0.75 jitter).
+      // If the counter were incrementing on gated fires, the second would be at
+      // 45s and we'd never reach it after only 22.5s.
       vi.advanceTimersByTime(RETRY_EXPONENTIAL_BASE_SECONDS * 0.75 * 1000);
       vi.advanceTimersByTime(RETRY_EXPONENTIAL_BASE_SECONDS * 0.75 * 1000);
       vi.advanceTimersByTime(RETRY_EXPONENTIAL_BASE_SECONDS * 0.75 * 1000);
       expect(issue.retry).not.toBeCalled();
 
-      // Clear the interaction. The next firing — still at the base delay —
-      // is now allowed and the retry runs.
+      // Clear the interaction. The next firing -- still at the base delay -- is
+      // now allowed and the retry runs.
       vi.mocked(api.getInteractionManager().hasInteraction).mockReturnValue(false);
       vi.advanceTimersByTime(RETRY_EXPONENTIAL_BASE_SECONDS * 0.75 * 1000);
       expect(issue.retry).toBeCalledTimes(1);
@@ -854,7 +854,7 @@ describe('IssueManager', () => {
       vi.mocked(api.getConditionStateManager().getState).mockReturnValue({});
 
       const manager = new IssueManager(api);
-      // Plain Issue implementation — no optional methods installed.
+      // Plain Issue implementation -- no optional methods installed.
       const issue: Issue = {
         key: 'config_error',
         hasIssue: () => false,

tests/card-controller/issues/issues/media-load.test.ts

@@ -2,9 +2,9 @@ import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 import { mock } from 'vitest-mock-extended';
 import { MediaLoadIssue } from '../../../../src/card-controller/issues/issues/media-load';
 import { InternalCallbackActionConfig } from '../../../../src/config/schema/actions/custom/internal';
+import { IMAGE_VIEW_TARGET_ID_SENTINEL } from '../../../../src/view/target-id';
 import { View } from '../../../../src/view/view';
 import { createCardAPI, createMediaLoadedInfo } from '../../../test-utils';
-import { IMAGE_VIEW_TARGET_ID_SENTINEL } from '../../../../src/view/target-id';
 
 const createAPI = () => createCardAPI();
 
@@ -133,7 +133,7 @@ describe('MediaLoadIssue', () => {
       vi.advanceTimersByTime(10000);
       expect(issue.hasIssue()).toBe(true);
 
-      // Same target, different media view — issue stays active.
+      // Same target, different media view -- issue stays active.
       issue.detectDynamic({ targetID: 'camera-1', view: 'clip' });
       expect(issue.hasIssue()).toBe(true);
     });
@@ -145,7 +145,7 @@ describe('MediaLoadIssue', () => {
       vi.advanceTimersByTime(10000);
       expect(issue.hasIssue()).toBe(true);
 
-      // Switch to camera-2 which has no error — should deactivate and start
+      // Switch to camera-2 which has no error -- should deactivate and start
       // a fresh timer for the new target.
       issue.detectDynamic({ targetID: 'camera-2', view: 'live' });
       expect(issue.hasIssue()).toBe(false);
@@ -164,7 +164,7 @@ describe('MediaLoadIssue', () => {
       issue.detectDynamic({ targetID: 'camera-1', view: 'live' });
       expect(issue.hasIssue()).toBe(true);
 
-      // Switch to camera-2 which also has an error — should stay active.
+      // Switch to camera-2 which also has an error -- should stay active.
       issue.detectDynamic({ targetID: 'camera-2', view: 'live' });
       expect(issue.hasIssue()).toBe(true);
     });
@@ -456,7 +456,7 @@ describe('MediaLoadIssue', () => {
 
       issue.retry();
 
-      // Issue remains active — no new 10s grace period. The error stays
+      // Issue remains active -- no new 10s grace period. The error stays
       // visible while the provider re-attempts loading underneath.
       expect(issue.hasIssue()).toBe(true);
     });
@@ -542,9 +542,9 @@ describe('MediaLoadIssue', () => {
 
       issue.retry();
 
-      // After retry, the issue stays active and the errored target is
-      // preserved — no new 10s grace period. If media:loaded fires, the
-      // existing _handleMediaLoaded path will clear everything.
+      // After retry, the issue stays active and the errored target is preserved
+      // -- no new 10s grace period. If media:loaded fires, the existing
+      // _handleMediaLoaded path will clear everything.
       expect(issue.hasIssue()).toBe(true);
       issue.detectDynamic({ targetID: 'camera-1', view: 'live' });
       expect(issue.hasIssue()).toBe(true);
@@ -579,8 +579,8 @@ describe('MediaLoadIssue', () => {
       // Card detaches: timer must stop.
       issue.suspend();
 
-      // Full 10s later (plus margin) the timer has NOT matured — the user
-      // was offscreen and that time does not count against them.
+      // Full 10s later (plus margin) the timer has NOT matured -- the user was
+      // offscreen and that time does not count against them.
       vi.advanceTimersByTime(20000);
       expect(issue.hasIssue()).toBe(false);
       expect(onChange).not.toBeCalled();
@@ -594,7 +594,7 @@ describe('MediaLoadIssue', () => {
       vi.advanceTimersByTime(10000);
       expect(issue.hasIssue()).toBe(true);
 
-      // Card detaches — issue must remain visible on reattach.
+      // Card detaches -- issue must remain visible on reattach.
       issue.suspend();
 
       expect(issue.hasIssue()).toBe(true);
@@ -609,8 +609,8 @@ describe('MediaLoadIssue', () => {
       issue.suspend();
 
       // Reattach: the manager's resume() triggers evaluate() → detectDynamic.
-      // The target is still loading, so the timer arms with a fresh 10s
-      // window — not whatever was left when we suspended.
+      // The target is still loading, so the timer arms with a fresh 10s window
+      // -- not whatever was left when we suspended.
       issue.detectDynamic({ targetID: 'camera-1', view: 'live' });
 
       vi.advanceTimersByTime(9999);

tests/card-controller/issues/state-manager.test.ts

@@ -68,6 +68,28 @@ describe('IssueStateManager', () => {
       expect(mockLegacyResource.detectStatic).toBeCalledWith(hass);
       expect(mockMediaLoad.detectStatic).toBeCalledWith(hass);
     });
+
+    it('should isolate a failing issue and continue detecting the rest', async () => {
+      const spy = vi.spyOn(console, 'warn').mockReturnValue();
+      assert(mockConfigUpgrade.detectStatic);
+      assert(mockLegacyResource.detectStatic);
+      assert(mockMediaLoad.detectStatic);
+
+      vi.mocked(mockConfigUpgrade.detectStatic).mockRejectedValue(new Error('boom'));
+
+      // A second failure, a non-Error rejection, is isolated and logged too.
+      vi.mocked(mockLegacyResource.detectStatic).mockRejectedValue('bad');
+
+      const manager = createManager();
+      const hass = createHASS();
+
+      await expect(manager.detectStatic(hass)).resolves.toBeUndefined();
+
+      // Detection continued to the final issue despite the two earlier failures.
+      expect(mockMediaLoad.detectStatic).toBeCalledWith(hass);
+      expect(spy).toBeCalledTimes(2);
+      spy.mockRestore();
+    });
   });
 
   describe('trigger', () => {

tests/card-controller/media-player-manager.test.ts

@@ -451,9 +451,9 @@ describe('MediaPlayerManager', () => {
           const api = createCardAPI();
           vi.mocked(api.getCameraManager).mockReturnValue(createCameraManager());
 
-          // Bypass schema validation — the code has a runtime guard (TypeScript
-          // narrowing) for the case where dashboard config is present but
-          // dashboard_path / view_path are missing.
+          // Bypass schema validation -- the code has a runtime guard
+          // (TypeScript narrowing) for the case where dashboard config is
+          // present but dashboard_path / view_path are missing.
           const configWithNoDashboardPaths = createCameraConfig({
             camera_entity: 'camera.foo',
           });

tests/card-controller/view/view-manager.test.ts

@@ -509,7 +509,7 @@ describe('should handle exceptions', () => {
       expect.objectContaining({ error }),
     );
 
-    // The loading flag must be cleared on error — otherwise gallery/viewer
+    // The loading flag must be cleared on error -- otherwise gallery/viewer
     // components render "Awaiting media" indefinitely on top of the error
     // notification.
     expect(manager.getView()?.context?.loading?.query).toBeUndefined();
@@ -538,9 +538,9 @@ describe('should handle exceptions', () => {
       viewQueryExecutor: viewQueryExecutor,
     });
 
-    // Concurrent reset during the await — clears `_view` before the
-    // rejection is processed. The error path must not crash on the null
-    // view when attempting to clear the loading flag.
+    // Concurrent reset during the await -- clears `_view` before the rejection
+    // is processed. The error path must not crash on the null view when
+    // attempting to clear the loading flag.
     viewQueryExecutor.getNewQueryModifiers.mockImplementation(async () => {
       manager.reset();
       throw error;

tests/components-lib/live/microphone-actions-controller.test.ts

@@ -56,6 +56,19 @@ describe('MicrophoneActionsController', () => {
       expect(microphoneManager.mute).not.toBeCalled();
     });
 
+    it('should swallow a rejected auto-unmute so a denied microphone does not surface', async () => {
+      const microphoneManager = createMicrophoneManager();
+      vi.mocked(microphoneManager.unmute).mockRejectedValue(new Error('denied'));
+      const controller = new MicrophoneActionsController();
+      controller.setOptions({
+        microphoneManager,
+        autoUnmuteConditions: ['selected' as const],
+      });
+
+      await expect(controller.setSelectedCamera('camera-1')).resolves.toBeUndefined();
+      expect(microphoneManager.unmute).toBeCalledTimes(1);
+    });
+
     it('should mute on unselected when transitioning to a new camera', async () => {
       const microphoneManager = createMicrophoneManager();
       const controller = new MicrophoneActionsController();

tests/components-lib/media-loaded-info-sink-controller.test.ts

@@ -61,7 +61,7 @@ describe('MediaLoadedInfoSinkController', () => {
       // Both cached, but only the selected one is exposed.
       expect(controller.get()).toBe(infoA);
 
-      // Selecting the other target switches what `get()` returns — without a
+      // Selecting the other target switches what `get()` returns -- without a
       // new event arriving for it.
       selected = 'target-B';
       controller.hostUpdated();
@@ -102,7 +102,7 @@ describe('MediaLoadedInfoSinkController', () => {
       controller.hostConnected();
       vi.clearAllMocks();
 
-      // Load for an unselected target — cached but inactive.
+      // Load for an unselected target -- cached but inactive.
       host.dispatchEvent(
         createMediaLoadedInfoEvent({
           info: createMediaLoadedInfo({ targetID: 'target-B' }),
@@ -162,7 +162,7 @@ describe('MediaLoadedInfoSinkController', () => {
       controller.hostUpdated();
       vi.clearAllMocks();
 
-      // Switch to another target with no cached info — active stays null.
+      // Switch to another target with no cached info -- active stays null.
       selected = 'target-B';
       controller.hostUpdated();
 

tests/components-lib/media-loaded-info-source-controller.test.ts

@@ -126,9 +126,9 @@ describe('MediaLoadedInfoSourceController', () => {
     });
 
     it('should abort the prior dispatch when targetID changes between calls', () => {
-      // Without this, the manager would zombie an entry under the old
-      // targetID — its `onAbort` cleanup never fires because we never aborted
-      // the prior signal before overwriting `_abort`.
+      // Without this, the manager would zombie an entry under the old targetID
+      // -- its `onAbort` cleanup never fires because we never aborted the prior
+      // signal before overwriting `_abort`.
       let targetID: string | null = 'target-1';
       const host = createLitElement();
       const controller = new MediaLoadedInfoSourceController(host, {
@@ -164,7 +164,7 @@ describe('MediaLoadedInfoSourceController', () => {
       controller.set(createMediaLoadedInfo());
       const firstSignal = (handler.mock.calls[0][0] as CustomEvent).detail.signal;
 
-      // Disconnect and reconnect — without a fresh `set`.
+      // Disconnect and reconnect -- without a fresh `set`.
       controller.hostDisconnected();
       controller.hostConnected();
 
@@ -201,7 +201,7 @@ describe('MediaLoadedInfoSourceController', () => {
       host.addEventListener('advanced-camera-card:media:loaded', handler);
 
       controller.set(createMediaLoadedInfo());
-      // Active registration, no disconnect — connect should be a no-op.
+      // Active registration, no disconnect -- connect should be a no-op.
       controller.hostConnected();
 
       expect(handler).toBeCalledTimes(1);
@@ -228,7 +228,7 @@ describe('MediaLoadedInfoSourceController', () => {
       targetID = 'target-2';
       controller.hostConnected();
 
-      // No re-dispatch — the stale cache was discarded.
+      // No re-dispatch -- the stale cache was discarded.
       expect(handler).toBeCalledTimes(1);
 
       // A subsequent set() under the new target dispatches fresh.

tests/components-lib/signed-url-controller.test.ts

@@ -771,7 +771,7 @@ describe('SignedURLController', () => {
     controller.hostUpdate();
     expect(createProxiedEndpointIfNecessary).toHaveBeenCalledTimes(1);
 
-    // Resolve the original request — should still succeed.
+    // Resolve the original request -- should still succeed.
     resolveProxy?.({ endpoint: 'http://proxied-url.com', sign: false });
     await flushPromises();
 
@@ -809,7 +809,7 @@ describe('SignedURLController', () => {
     expect(createProxiedEndpointIfNecessary).toHaveBeenCalledTimes(1);
     expect(controller.getValue()).toBe('http://signed.com');
 
-    // Change only the extraneous field — should hit the cache, not re-fetch.
+    // Change only the extraneous field -- should hit the cache, not re-fetch.
     extraneous = false;
     await controller.hostUpdate();
     expect(createProxiedEndpointIfNecessary).toHaveBeenCalledTimes(1);

tests/components-lib/status-bar-controller.test.ts

@@ -314,12 +314,12 @@ describe('StatusBarController', () => {
           sufficient: true,
         };
 
-        // Start with permanent item — bar stays visible.
+        // Start with permanent item -- bar stays visible.
         controller.setItems([permanentItem, nonPermanentItem]);
         vi.advanceTimersByTime(10000);
         expect(host.getAttribute('hide')).toBe(null);
 
-        // Remove permanent item — popup timer starts.
+        // Remove permanent item -- popup timer starts.
         controller.setItems([nonPermanentItem]);
         expect(host.getAttribute('hide')).toBe(null);
 
@@ -342,7 +342,7 @@ describe('StatusBarController', () => {
           string: 'Title',
           sufficient: true,
         };
-        // A permanent item that is NOT sufficient — removing it does not
+        // A permanent item that is NOT sufficient -- removing it does not
         // change the sufficient-values set, so the popup timer takes the
         // dedicated permanent-removal branch.
         const permanentInsufficientItem = {
@@ -356,7 +356,7 @@ describe('StatusBarController', () => {
         vi.advanceTimersByTime(10000);
         expect(host.getAttribute('hide')).toBe(null);
 
-        // Remove the permanent (insufficient) item — sufficient values are
+        // Remove the permanent (insufficient) item -- sufficient values are
         // unchanged, but the popup timer must still start.
         controller.setItems([sufficientItem]);
         expect(host.getAttribute('hide')).toBe(null);

tests/components-lib/thumbnail/feature/controller.test.ts

@@ -1,5 +1,5 @@
 import { format } from 'date-fns';
-import { describe, expect, it } from 'vitest';
+import { assert, describe, expect, it } from 'vitest';
 import { mock } from 'vitest-mock-extended';
 import { CameraManager } from '../../../../src/camera-manager/manager';
 import { ThumbnailFeatureController } from '../../../../src/components-lib/thumbnail/feature/controller';
@@ -12,6 +12,8 @@ describe('ThumbnailFeatureController', () => {
     title: 'Test Event',
     cameraID: 'camera_1',
   });
+  const itemStartTime = itemWithTime.getStartTime();
+  assert(itemStartTime);
 
   describe('should set title', () => {
     it('should set title with start time ', () => {
@@ -20,7 +22,7 @@ describe('ThumbnailFeatureController', () => {
       controller.calculate(null, itemWithTime, false);
 
       // Use format() to generate expected time in local timezone
-      const expectedTime = format(itemWithTime.getStartTime()!, 'HH:mm');
+      const expectedTime = format(itemStartTime, 'HH:mm');
       expect(controller.getTitle()).toBe(expectedTime);
     });
 
@@ -54,7 +56,7 @@ describe('ThumbnailFeatureController', () => {
       controller.calculate(null, itemWithTime, false);
 
       // Use format() to generate expected date string (formats in local time)
-      const expectedDate = format(itemWithTime.getStartTime()!, 'MMM do');
+      const expectedDate = format(itemStartTime, 'MMM do');
       expect(controller.getSubtitles()).toContain(expectedDate);
     });
 

tests/components/notification/no-media.test.ts

@@ -61,7 +61,7 @@ describe('renderNoMedia', () => {
   });
 
   it('should not include metadata when no camera is resolvable', () => {
-    // Empty store — no default camera.
+    // Empty store -- no default camera.
     const cameraManager = createCameraManager(createStore());
 
     const result = renderNoMedia({

tests/view/query-results.test.ts

@@ -78,36 +78,37 @@ describe('dispatchViewContextChangeEvent', () => {
     const results = new QueryResults({ results: testResults });
     const slice = results.getSlice('office');
     expect(slice).not.toBeNull();
-    expect(slice!.getResults()).toEqual(
+    assert(slice);
+    expect(slice.getResults()).toEqual(
       testResults.filter((item) => item.getCameraID() === 'office'),
     );
-    expect(slice!.getResultsCount()).toEqual(100);
-    expect(slice!.hasResults()).toBeTruthy();
-    expect(slice!.getResult(0)).not.toBeNull();
-    expect(slice!.getResult()).toBeNull();
-    expect(slice!.getSelectedIndex()).toBe(99);
-    expect(slice!.getSelectedResult()?.getID()).toEqual('id-office-99');
-    expect(slice!.hasSelectedResult()).toBeTruthy();
+    expect(slice.getResultsCount()).toEqual(100);
+    expect(slice.hasResults()).toBeTruthy();
+    expect(slice.getResult(0)).not.toBeNull();
+    expect(slice.getResult()).toBeNull();
+    expect(slice.getSelectedIndex()).toBe(99);
+    expect(slice.getSelectedResult()?.getID()).toEqual('id-office-99');
+    expect(slice.hasSelectedResult()).toBeTruthy();
 
-    expect(slice!.resetSelectedResult());
-    expect(slice!.getSelectedResult()).toBeNull();
+    expect(slice.resetSelectedResult());
+    expect(slice.getSelectedResult()).toBeNull();
 
-    expect(slice!.selectIndex(10));
-    expect(slice!.getSelectedIndex()).toBe(10);
+    expect(slice.selectIndex(10));
+    expect(slice.getSelectedIndex()).toBe(10);
 
-    expect(slice!.selectIndex(10000));
-    expect(slice!.getSelectedIndex()).toBe(10);
+    expect(slice.selectIndex(10000));
+    expect(slice.getSelectedIndex()).toBe(10);
 
-    expect(slice!.selectIndex(-10000));
-    expect(slice!.getSelectedIndex()).toBe(10);
+    expect(slice.selectIndex(-10000));
+    expect(slice.getSelectedIndex()).toBe(10);
 
-    slice!.selectResultIfFound((item: ViewItem) => item.getID() === 'id-office-42');
-    expect(slice!.getSelectedResult()?.getID()).toBe('id-office-42');
+    slice.selectResultIfFound((item: ViewItem) => item.getID() === 'id-office-42');
+    expect(slice.getSelectedResult()?.getID()).toBe('id-office-42');
 
-    slice!.selectBestResult((itemArray: ViewItem[]) =>
+    slice.selectBestResult((itemArray: ViewItem[]) =>
       itemArray.findIndex((item) => item.getID() === 'id-office-43'),
     );
-    expect(slice!.getSelectedResult()?.getID()).toBe('id-office-43');
+    expect(slice.getSelectedResult()?.getID()).toBe('id-office-43');
   });
 
   describe('should respect select approach during construction', () => {