Add custom element decorators instead of customElements.define (#28235)

* Add custom element decorators instead of customElements.define

* Ignore

* prettier

src/components/chart/state-history-chart-line.ts

@@ -1,6 +1,6 @@
 import type { PropertyValues } from "lit";
 import { html, LitElement } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import type { VisualMapComponentOption } from "echarts/components";
 import type { LineSeriesOption } from "echarts/charts";
 import type { YAXisOption } from "echarts/types/dist/shared";
@@ -27,6 +27,7 @@ const safeParseFloat = (value) => {
   return isFinite(parsed) ? parsed : null;
 };
 
+@customElement("state-history-chart-line")
 export class StateHistoryChartLine extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -795,7 +796,6 @@ export class StateHistoryChartLine extends LitElement {
     return Math.abs(value) < 1 ? value : roundingFn(value);
   }
 }
-customElements.define("state-history-chart-line", StateHistoryChartLine);
 
 declare global {
   interface HTMLElementTagNameMap {

src/components/entity/state-badge.ts

@@ -2,7 +2,7 @@ import { mdiAlert } from "@mdi/js";
 import type { HassEntity } from "home-assistant-js-websocket";
 import type { CSSResultGroup, PropertyValues } from "lit";
 import { LitElement, css, html, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { ifDefined } from "lit/directives/if-defined";
 import { styleMap } from "lit/directives/style-map";
 import { computeDomain } from "../../common/entity/compute_domain";
@@ -17,6 +17,7 @@ import { CLIMATE_HVAC_ACTION_TO_MODE } from "../../data/climate";
 import type { HomeAssistant } from "../../types";
 import "../ha-state-icon";
 
+@customElement("state-badge")
 export class StateBadge extends LitElement {
   public hass?: HomeAssistant;
 
@@ -265,5 +266,3 @@ declare global {
     "state-badge": StateBadge;
   }
 }
-
-customElements.define("state-badge", StateBadge);

src/components/map/ha-entity-marker.ts

@@ -1,10 +1,11 @@
 import { LitElement, html, css } from "lit";
-import { property } from "lit/decorators";
+import { customElement, property } from "lit/decorators";
 import { styleMap } from "lit/directives/style-map";
 import type { HomeAssistant } from "../../types";
 import { fireEvent } from "../../common/dom/fire_event";
 import "../ha-state-icon";
 
+@customElement("ha-entity-marker")
 class HaEntityMarker extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -89,8 +90,6 @@ class HaEntityMarker extends LitElement {
   `;
 }
 
-customElements.define("ha-entity-marker", HaEntityMarker);
-
 declare global {
   interface HTMLElementTagNameMap {
     "ha-entity-marker": HaEntityMarker;

src/dialogs/more-info/controls/more-info-camera.ts

@@ -1,5 +1,5 @@
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { slugify } from "../../../common/string/slugify";
 import "../../../components/buttons/ha-progress-button";
 import "../../../components/ha-camera-stream";
@@ -9,6 +9,7 @@ import type { HomeAssistant } from "../../../types";
 import { fileDownload } from "../../../util/file_download";
 import { showToast } from "../../../util/toast";
 
+@customElement("more-info-camera")
 class MoreInfoCamera extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -112,8 +113,6 @@ class MoreInfoCamera extends LitElement {
   `;
 }
 
-customElements.define("more-info-camera", MoreInfoCamera);
-
 declare global {
   interface HTMLElementTagNameMap {
     "more-info-camera": MoreInfoCamera;

src/dialogs/more-info/controls/more-info-climate.ts

@@ -7,7 +7,7 @@ import {
 } from "@mdi/js";
 import type { CSSResultGroup, PropertyValues } from "lit";
 import { LitElement, css, html, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { stopPropagation } from "../../../common/dom/stop_propagation";
 import { supportsFeature } from "../../../common/entity/supports-feature";
 import "../../../components/ha-attribute-icon";
@@ -32,6 +32,7 @@ import { moreInfoControlStyle } from "../components/more-info-control-style";
 
 type MainControl = "temperature" | "humidity";
 
+@customElement("more-info-climate")
 class MoreInfoClimate extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -567,8 +568,6 @@ class MoreInfoClimate extends LitElement {
   }
 }
 
-customElements.define("more-info-climate", MoreInfoClimate);
-
 declare global {
   interface HTMLElementTagNameMap {
     "more-info-climate": MoreInfoClimate;

src/dialogs/more-info/controls/more-info-group.ts

@@ -1,7 +1,7 @@
 import type { HassEntity } from "home-assistant-js-websocket";
 import type { CSSResultGroup, PropertyValues } from "lit";
 import { LitElement, css, html, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { dynamicElement } from "../../../common/dom/dynamic-element-directive";
 import type { GroupEntity } from "../../../data/group";
 import { computeGroupDomain } from "../../../data/group";
@@ -13,6 +13,7 @@ import {
   importMoreInfoControl,
 } from "../state_more_info_control";
 
+@customElement("more-info-group")
 class MoreInfoGroup extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -106,8 +107,6 @@ class MoreInfoGroup extends LitElement {
   }
 }
 
-customElements.define("more-info-group", MoreInfoGroup);
-
 declare global {
   interface HTMLElementTagNameMap {
     "more-info-group": MoreInfoGroup;

src/dialogs/more-info/controls/more-info-humidifier.ts

@@ -1,7 +1,7 @@
 import { mdiPower, mdiTuneVariant } from "@mdi/js";
 import type { CSSResultGroup, PropertyValues } from "lit";
 import { LitElement, css, html, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { stopPropagation } from "../../../common/dom/stop_propagation";
 import { supportsFeature } from "../../../common/entity/supports-feature";
 import "../../../components/ha-control-select-menu";
@@ -15,6 +15,7 @@ import type { HomeAssistant } from "../../../types";
 import "../components/ha-more-info-control-select-container";
 import { moreInfoControlStyle } from "../components/more-info-control-style";
 
+@customElement("more-info-humidifier")
 class MoreInfoHumidifier extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -249,8 +250,6 @@ class MoreInfoHumidifier extends LitElement {
   }
 }
 
-customElements.define("more-info-humidifier", MoreInfoHumidifier);
-
 declare global {
   interface HTMLElementTagNameMap {
     "more-info-humidifier": MoreInfoHumidifier;

src/layouts/ha-init-page.ts

@@ -1,9 +1,10 @@
 import type { PropertyValues } from "lit";
 import { css, html, LitElement } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import "../components/ha-spinner";
 import "../components/ha-button";
 
+@customElement("ha-init-page")
 class HaInitPage extends LitElement {
   @property({ type: Boolean }) public error = false;
 
@@ -120,8 +121,6 @@ class HaInitPage extends LitElement {
   `;
 }
 
-customElements.define("ha-init-page", HaInitPage);
-
 declare global {
   interface HTMLElementTagNameMap {
     "ha-init-page": HaInitPage;

src/managers/notification-manager.ts

@@ -1,6 +1,6 @@
 import { mdiClose } from "@mdi/js";
 import { html, LitElement, nothing } from "lit";
-import { property, query, state } from "lit/decorators";
+import { customElement, property, query, state } from "lit/decorators";
 import type { LocalizeKeys } from "../common/translations/localize";
 import "../components/ha-button";
 import "../components/ha-icon-button";
@@ -26,6 +26,7 @@ export interface ToastActionParams {
     | { translationKey: LocalizeKeys; args?: Record<string, string> };
 }
 
+@customElement("notification-manager")
 class NotificationManager extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -115,8 +116,6 @@ class NotificationManager extends LitElement {
   }
 }
 
-customElements.define("notification-manager", NotificationManager);
-
 declare global {
   interface HTMLElementTagNameMap {
     "notification-manager": NotificationManager;

src/panels/calendar/dialog-calendar-event-detail.ts

@@ -3,7 +3,7 @@ import { TZDate } from "@date-fns/tz";
 import { addDays, isSameDay } from "date-fns";
 import type { CSSResultGroup } from "lit";
 import { LitElement, css, html, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { formatDate } from "../../common/datetime/format_date";
 import { formatDateTime } from "../../common/datetime/format_date_time";
 import { formatTime } from "../../common/datetime/format_time";
@@ -26,6 +26,7 @@ import type { CalendarEventDetailDialogParams } from "./show-dialog-calendar-eve
 import { showCalendarEventEditDialog } from "./show-dialog-calendar-event-editor";
 import { resolveTimeZone } from "../../common/datetime/resolve-time-zone";
 
+@customElement("dialog-calendar-event-detail")
 class DialogCalendarEventDetail extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -271,8 +272,3 @@ declare global {
     "dialog-calendar-event-detail": DialogCalendarEventDetail;
   }
 }
-
-customElements.define(
-  "dialog-calendar-event-detail",
-  DialogCalendarEventDetail
-);

src/panels/config/areas/dialog-area-registry-detail.ts

@@ -1,7 +1,7 @@
 import type { HassEntity } from "home-assistant-js-websocket";
 import type { CSSResultGroup } from "lit";
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { fireEvent } from "../../../common/dom/fire_event";
 import "../../../components/entity/ha-entity-picker";
 import type { HaEntityPicker } from "../../../components/entity/ha-entity-picker";
@@ -40,6 +40,7 @@ const SENSOR_DOMAINS = ["sensor"];
 const TEMPERATURE_DEVICE_CLASSES = [SENSOR_DEVICE_CLASS_TEMPERATURE];
 const HUMIDITY_DEVICE_CLASSES = [SENSOR_DEVICE_CLASS_HUMIDITY];
 
+@customElement("dialog-area-registry-detail")
 class DialogAreaDetail extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -426,5 +427,3 @@ declare global {
     "dialog-area-registry-detail": DialogAreaDetail;
   }
 }
-
-customElements.define("dialog-area-registry-detail", DialogAreaDetail);

src/panels/config/areas/dialog-floor-registry-detail.ts

@@ -1,7 +1,7 @@
 import { mdiTextureBox } from "@mdi/js";
 import type { CSSResultGroup } from "lit";
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { repeat } from "lit/directives/repeat";
 import memoizeOne from "memoize-one";
 import { fireEvent } from "../../../common/dom/fire_event";
@@ -27,6 +27,7 @@ import type { HomeAssistant } from "../../../types";
 import { showAreaRegistryDetailDialog } from "./show-dialog-area-registry-detail";
 import type { FloorRegistryDetailDialogParams } from "./show-dialog-floor-registry-detail";
 
+@customElement("dialog-floor-registry-detail")
 class DialogFloorDetail extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -357,5 +358,3 @@ declare global {
     "dialog-floor-registry-detail": DialogFloorDetail;
   }
 }
-
-customElements.define("dialog-floor-registry-detail", DialogFloorDetail);

src/panels/config/automation/ha-automation-editor.ts

@@ -23,7 +23,7 @@ import {
 import type { UnsubscribeFunc } from "home-assistant-js-websocket";
 import type { CSSResultGroup, PropertyValues, TemplateResult } from "lit";
 import { css, html, LitElement, nothing } from "lit";
-import { property, query, state } from "lit/decorators";
+import { customElement, property, query, state } from "lit/decorators";
 import { classMap } from "lit/directives/class-map";
 import { transform } from "../../../common/decorators/transform";
 import { fireEvent } from "../../../common/dom/fire_event";
@@ -112,6 +112,7 @@ declare global {
   }
 }
 
+@customElement("ha-automation-editor")
 export class HaAutomationEditor extends PreventUnsavedMixin(
   KeyboardShortcutMixin(LitElement)
 ) {
@@ -1339,5 +1340,3 @@ export class HaAutomationEditor extends PreventUnsavedMixin(
     ];
   }
 }
-
-customElements.define("ha-automation-editor", HaAutomationEditor);

src/panels/config/cloud/dialog-manage-cloudhook/dialog-manage-cloudhook.ts

@@ -1,7 +1,7 @@
 import { mdiOpenInNew } from "@mdi/js";
 import type { CSSResultGroup } from "lit";
 import { css, html, LitElement, nothing } from "lit";
-import { state } from "lit/decorators";
+import { customElement, state } from "lit/decorators";
 import { fireEvent } from "../../../../common/dom/fire_event";
 import { createCloseHeading } from "../../../../components/ha-dialog";
 import { showConfirmationDialog } from "../../../../dialogs/generic/show-dialog-box";
@@ -13,6 +13,7 @@ import type { WebhookDialogParams } from "./show-dialog-manage-cloudhook";
 import "../../../../components/ha-button";
 import "../../../../components/ha-copy-textfield";
 
+@customElement("dialog-manage-cloudhook")
 export class DialogManageCloudhook extends LitElement {
   protected hass?: HomeAssistant;
 
@@ -155,5 +156,3 @@ declare global {
     "dialog-manage-cloudhook": DialogManageCloudhook;
   }
 }
-
-customElements.define("dialog-manage-cloudhook", DialogManageCloudhook);

src/panels/config/helpers/forms/dialog-schedule-block-info.ts

@@ -1,7 +1,7 @@
 import type { CSSResultGroup } from "lit";
 import { html, LitElement, nothing } from "lit";
 import memoizeOne from "memoize-one";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { fireEvent } from "../../../../common/dom/fire_event";
 import { createCloseHeading } from "../../../../components/ha-dialog";
 import "../../../../components/ha-form/ha-form";
@@ -14,6 +14,7 @@ import type {
 } from "./show-dialog-schedule-block-info";
 import type { SchemaUnion } from "../../../../components/ha-form/types";
 
+@customElement("dialog-schedule-block-info")
 class DialogScheduleBlockInfo extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -156,5 +157,3 @@ declare global {
     "dialog-schedule-block-info": DialogScheduleBlockInfo;
   }
 }
-
-customElements.define("dialog-schedule-block-info", DialogScheduleBlockInfo);

src/panels/config/integrations/integration-panels/zha/zha-cluster-commands.ts

@@ -1,6 +1,6 @@
 import type { CSSResultGroup, PropertyValues } from "lit";
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { stopPropagation } from "../../../../../common/dom/stop_propagation";
 import "../../../../../components/buttons/ha-call-service-button";
 import "../../../../../components/ha-card";
@@ -15,6 +15,7 @@ import type { HomeAssistant } from "../../../../../types";
 import { formatAsPaddedHex } from "./functions";
 import type { IssueCommandServiceData } from "./types";
 
+@customElement("zha-cluster-commands")
 export class ZHAClusterCommands extends LitElement {
   @property({ attribute: false }) public hass?: HomeAssistant;
 
@@ -259,5 +260,3 @@ declare global {
     "zha-cluster-commands": ZHAClusterCommands;
   }
 }
-
-customElements.define("zha-cluster-commands", ZHAClusterCommands);

src/panels/config/logs/dialog-system-log-detail.ts

@@ -1,7 +1,7 @@
 import { mdiClose, mdiContentCopy } from "@mdi/js";
 import type { CSSResultGroup } from "lit";
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { fireEvent } from "../../../common/dom/fire_event";
 import { copyToClipboard } from "../../../common/util/copy-clipboard";
 import "../../../components/ha-alert";
@@ -26,6 +26,7 @@ import { showToast } from "../../../util/toast";
 import type { SystemLogDetailDialogParams } from "./show-dialog-system-log-detail";
 import { formatSystemLogTime } from "./util";
 
+@customElement("dialog-system-log-detail")
 class DialogSystemLogDetail extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -272,5 +273,3 @@ declare global {
     "dialog-system-log-detail": DialogSystemLogDetail;
   }
 }
-
-customElements.define("dialog-system-log-detail", DialogSystemLogDetail);

src/panels/config/person/dialog-person-detail.ts

@@ -1,7 +1,7 @@
 import { mdiPencil } from "@mdi/js";
 import type { CSSResultGroup } from "lit";
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import memoizeOne from "memoize-one";
 import { fireEvent } from "../../../common/dom/fire_event";
 import "../../../components/entity/ha-entities-picker";
@@ -43,6 +43,7 @@ const cropOptions: CropOptions = {
   aspectRatio: 1,
 };
 
+@customElement("dialog-person-detail")
 class DialogPersonDetail extends LitElement implements HassDialog {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -567,5 +568,3 @@ declare global {
     "dialog-person-detail": DialogPersonDetail;
   }
 }
-
-customElements.define("dialog-person-detail", DialogPersonDetail);

src/panels/config/script/ha-script-editor.ts

@@ -21,7 +21,7 @@ import {
 } from "@mdi/js";
 import type { CSSResultGroup, PropertyValues, TemplateResult } from "lit";
 import { LitElement, css, html, nothing } from "lit";
-import { property, query, state } from "lit/decorators";
+import { customElement, property, query, state } from "lit/decorators";
 import { classMap } from "lit/directives/class-map";
 import { fireEvent } from "../../../common/dom/fire_event";
 import { goBack, navigate } from "../../../common/navigate";
@@ -79,6 +79,7 @@ import "./manual-script-editor";
 import type { HaManualScriptEditor } from "./manual-script-editor";
 import { showAutomationSaveTimeoutDialog } from "../automation/automation-save-timeout-dialog/show-dialog-automation-save-timeout";
 
+@customElement("ha-script-editor")
 export class HaScriptEditor extends SubscribeMixin(
   PreventUnsavedMixin(KeyboardShortcutMixin(LitElement))
 ) {
@@ -1278,8 +1279,6 @@ export class HaScriptEditor extends SubscribeMixin(
   }
 }
 
-customElements.define("ha-script-editor", HaScriptEditor);
-
 declare global {
   interface HTMLElementTagNameMap {
     "ha-script-editor": HaScriptEditor;

src/panels/config/voice-assistants/cloud-alexa-pref.ts

@@ -1,6 +1,6 @@
 import { mdiHelpCircle } from "@mdi/js";
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import memoizeOne from "memoize-one";
 import { fireEvent } from "../../../common/dom/fire_event";
 import { isEmptyEntityDomainFilter } from "../../../common/entity/entity_domain_filter";
@@ -20,6 +20,7 @@ import {
 import type { HomeAssistant } from "../../../types";
 import { brandsUrl } from "../../../util/brands-url";
 
+@customElement("cloud-alexa-pref")
 export class CloudAlexaPref extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -297,5 +298,3 @@ declare global {
     "cloud-alexa-pref": CloudAlexaPref;
   }
 }
-
-customElements.define("cloud-alexa-pref", CloudAlexaPref);

src/panels/config/voice-assistants/cloud-google-pref.ts

@@ -1,6 +1,6 @@
 import { mdiHelpCircle } from "@mdi/js";
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import memoizeOne from "memoize-one";
 import { fireEvent } from "../../../common/dom/fire_event";
 import { isEmptyEntityDomainFilter } from "../../../common/entity/entity_domain_filter";
@@ -23,6 +23,7 @@ import type { HomeAssistant } from "../../../types";
 import { brandsUrl } from "../../../util/brands-url";
 import { showSaveSuccessToast } from "../../../util/toast-saved-success";
 
+@customElement("cloud-google-pref")
 export class CloudGooglePref extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -367,5 +368,3 @@ declare global {
     "cloud-google-pref": CloudGooglePref;
   }
 }
-
-customElements.define("cloud-google-pref", CloudGooglePref);

src/panels/config/zone/dialog-home-zone-detail.ts

@@ -1,6 +1,6 @@
 import type { CSSResultGroup } from "lit";
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import memoizeOne from "memoize-one";
 import { fireEvent } from "../../../common/dom/fire_event";
 import { createCloseHeading } from "../../../components/ha-dialog";
@@ -19,6 +19,7 @@ const SCHEMA = [
   },
 ];
 
+@customElement("dialog-home-zone-detail")
 class DialogHomeZoneDetail extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -151,5 +152,3 @@ declare global {
     "dialog-home-zone-detail": DialogHomeZoneDetail;
   }
 }
-
-customElements.define("dialog-home-zone-detail", DialogHomeZoneDetail);

src/panels/config/zone/dialog-zone-detail.ts

@@ -1,6 +1,6 @@
 import type { CSSResultGroup } from "lit";
 import { css, html, LitElement, nothing } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import memoizeOne from "memoize-one";
 import { fireEvent } from "../../../common/dom/fire_event";
 import { addDistanceToCoord } from "../../../common/location/add_distance_to_coord";
@@ -14,6 +14,7 @@ import { haStyleDialog } from "../../../resources/styles";
 import type { HomeAssistant } from "../../../types";
 import type { ZoneDetailDialogParams } from "./show-dialog-zone-detail";
 
+@customElement("dialog-zone-detail")
 class DialogZoneDetail extends LitElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -241,5 +242,3 @@ declare global {
     "dialog-zone-detail": DialogZoneDetail;
   }
 }
-
-customElements.define("dialog-zone-detail", DialogZoneDetail);

src/panels/custom/ha-panel-custom.ts

@@ -1,6 +1,6 @@
 import type { PropertyValues } from "lit";
 import { ReactiveElement } from "lit";
-import { property } from "lit/decorators";
+import { customElement, property } from "lit/decorators";
 import type { NavigateOptions } from "../../common/navigate";
 import { navigate } from "../../common/navigate";
 import { deepEqual } from "../../common/util/deep-equal";
@@ -22,6 +22,7 @@ declare global {
   }
 }
 
+@customElement("ha-panel-custom")
 export class HaPanelCustom extends ReactiveElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -171,5 +172,3 @@ export class HaPanelCustom extends ReactiveElement {
     iframeDoc.close();
   }
 }
-
-customElements.define("ha-panel-custom", HaPanelCustom);

src/panels/history/ha-panel-history.ts

@@ -12,7 +12,7 @@ import type {
 } from "home-assistant-js-websocket/dist/types";
 import type { PropertyValues } from "lit";
 import { LitElement, css, html } from "lit";
-import { property, query, state } from "lit/decorators";
+import { customElement, property, query, state } from "lit/decorators";
 import memoizeOne from "memoize-one";
 import { ensureArray } from "../../common/array/ensure-array";
 import { storage } from "../../common/decorators/storage";
@@ -52,6 +52,7 @@ import type { HomeAssistant } from "../../types";
 import { fileDownload } from "../../util/file_download";
 import { addEntitiesToLovelaceView } from "../lovelace/editor/add-entities-to-view";
 
+@customElement("ha-panel-history")
 class HaPanelHistory extends LitElement {
   @property({ attribute: false }) hass!: HomeAssistant;
 
@@ -679,8 +680,6 @@ class HaPanelHistory extends LitElement {
   }
 }
 
-customElements.define("ha-panel-history", HaPanelHistory);
-
 declare global {
   interface HTMLElementTagNameMap {
     "ha-panel-history": HaPanelHistory;

src/panels/lovelace/cards/hui-grid-card.ts

@@ -1,5 +1,6 @@
 import type { CSSResultGroup } from "lit";
 import { css } from "lit";
+import { customElement } from "lit/decorators";
 import { computeCardSize } from "../common/compute-card-size";
 import type { LovelaceCardEditor } from "../types";
 import { HuiStackCard } from "./hui-stack-card";
@@ -12,6 +13,7 @@ const SQUARE_ROW_HEIGHTS_BY_COLUMNS = {
   3: 2,
 };
 
+@customElement("hui-grid-card")
 class HuiGridCard extends HuiStackCard<GridCardConfig> {
   public static async getConfigElement(): Promise<LovelaceCardEditor> {
     await import("../editor/config-elements/hui-grid-card-editor");
@@ -115,5 +117,3 @@ declare global {
     "hui-grid-card": HuiGridCard;
   }
 }
-
-customElements.define("hui-grid-card", HuiGridCard);

src/panels/lovelace/cards/hui-vertical-stack-card.ts

@@ -1,8 +1,10 @@
 import type { CSSResultGroup } from "lit";
 import { css } from "lit";
+import { customElement } from "lit/decorators";
 import { computeCardSize } from "../common/compute-card-size";
 import { HuiStackCard } from "./hui-stack-card";
 
+@customElement("hui-vertical-stack-card")
 class HuiVerticalStackCard extends HuiStackCard {
   public async getCardSize() {
     if (!this._cards) {
@@ -40,5 +42,3 @@ declare global {
     "hui-vertical-stack-card": HuiVerticalStackCard;
   }
 }
-
-customElements.define("hui-vertical-stack-card", HuiVerticalStackCard);

src/panels/lovelace/common/directives/action-handler-directive.ts

@@ -1,5 +1,6 @@
 /* eslint-disable max-classes-per-file */
 import { noChange } from "lit";
+import { customElement } from "lit/decorators";
 import type { AttributePart, DirectiveParameters } from "lit/directive";
 import { directive, Directive } from "lit/directive";
 import { fireEvent } from "../../../../common/dom/fire_event";
@@ -32,6 +33,7 @@ declare global {
   }
 }
 
+@customElement("action-handler")
 class ActionHandler extends HTMLElement implements ActionHandlerType {
   public holdTime = 500;
 
@@ -43,6 +45,7 @@ class ActionHandler extends HTMLElement implements ActionHandlerType {
 
   private dblClickTimeout?: number;
 
+  // eslint-disable-next-line lit/lifecycle-super -- not a LitElement
   public connectedCallback() {
     Object.assign(this.style, {
       position: "fixed",
@@ -226,8 +229,6 @@ class ActionHandler extends HTMLElement implements ActionHandlerType {
   }
 }
 
-customElements.define("action-handler", ActionHandler);
-
 const getActionHandler = (): ActionHandlerType => {
   const body = document.body;
   if (body.querySelector("action-handler")) {

src/panels/lovelace/elements/hui-conditional-element.ts

@@ -1,3 +1,4 @@
+import { customElement } from "lit/decorators";
 import type { HomeAssistant } from "../../../types";
 import { createStyledHuiElement } from "../cards/picture-elements/create-styled-hui-element";
 import {
@@ -11,6 +12,7 @@ import type {
   LovelaceElementConfig,
 } from "./types";
 
+@customElement("hui-conditional-element")
 class HuiConditionalElement extends HTMLElement implements LovelaceElement {
   public static async getConfigElement(): Promise<LovelacePictureElementEditor> {
     await import("../editor/config-elements/elements/hui-conditional-element-editor");
@@ -84,5 +86,3 @@ declare global {
     "hui-conditional-element": HuiConditionalElement;
   }
 }
-
-customElements.define("hui-conditional-element", HuiConditionalElement);

src/panels/lovelace/views/hui-masonry-view.ts

@@ -1,7 +1,7 @@
 import { mdiPlus } from "@mdi/js";
 import type { PropertyValues, TemplateResult } from "lit";
 import { css, html, LitElement } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { fireEvent } from "../../../common/dom/fire_event";
 import { nextRender } from "../../../common/util/render-status";
 import "../../../components/entity/ha-state-label-badge";
@@ -33,6 +33,7 @@ const getColumnIndex = (columnSizes: number[], size: number) => {
   return minIndex;
 };
 
+@customElement("hui-masonry-view")
 export class MasonryView extends LitElement implements LovelaceViewElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -356,5 +357,3 @@ declare global {
     "hui-masonry-view": MasonryView;
   }
 }
-
-customElements.define("hui-masonry-view", MasonryView);

src/panels/lovelace/views/hui-panel-view.ts

@@ -1,7 +1,7 @@
 import { mdiPlus } from "@mdi/js";
 import type { PropertyValues, TemplateResult } from "lit";
 import { css, html, LitElement } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { classMap } from "lit/directives/class-map";
 import { fireEvent } from "../../../common/dom/fire_event";
 import { computeRTL } from "../../../common/util/compute_rtl";
@@ -15,6 +15,7 @@ import type { Lovelace } from "../types";
 
 let editCodeLoaded = false;
 
+@customElement("hui-panel-view")
 export class PanelView extends LitElement implements LovelaceViewElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -153,5 +154,3 @@ declare global {
     "hui-panel-view": PanelView;
   }
 }
-
-customElements.define("hui-panel-view", PanelView);

src/panels/lovelace/views/hui-sidebar-view.ts

@@ -1,7 +1,7 @@
 import { mdiArrowLeft, mdiArrowRight, mdiPlus } from "@mdi/js";
 import type { PropertyValues, TemplateResult } from "lit";
 import { LitElement, css, html } from "lit";
-import { property, state } from "lit/decorators";
+import { customElement, property, state } from "lit/decorators";
 import { fireEvent } from "../../../common/dom/fire_event";
 import type { LovelaceViewElement } from "../../../data/lovelace";
 import type { LovelaceViewConfig } from "../../../data/lovelace/config/view";
@@ -13,6 +13,7 @@ import type { HuiCardOptions } from "../components/hui-card-options";
 import { replaceCard } from "../editor/config-util";
 import type { Lovelace } from "../types";
 
+@customElement("hui-sidebar-view")
 export class SideBarView extends LitElement implements LovelaceViewElement {
   @property({ attribute: false }) public hass!: HomeAssistant;
 
@@ -256,5 +257,3 @@ declare global {
     "hui-sidebar-view": SideBarView;
   }
 }
-
-customElements.define("hui-sidebar-view", SideBarView);