feat(core): make collection dependencies optional peers

.changeset/optional-collection-peers.md

@@ -0,0 +1,5 @@
+---
+'@siemens/ix': major
+---
+
+V6 makes four of the Stencil collection's peer dependencies optional: `@floating-ui/dom`, `animejs`, `luxon`, and `@stencil/core`; `@siemens/ix-icons` remains a required peer. Collection consumers must install all five packages explicitly: `@floating-ui/dom`, `@siemens/ix-icons`, `@stencil/core`, `animejs`, and `luxon`; standard bundled entry points remain self-contained.

BREAKING_CHANGES/v6.md

@@ -2,6 +2,23 @@
 
 This document lists breaking changes introduced in Siemens Industrial Experience V6.
 
+## Stencil collection optional peers
+
+The Stencil collection has four newly optional peer dependencies:
+`@floating-ui/dom`, `animejs`, `luxon`, and `@stencil/core`.
+`@siemens/ix-icons` remains a required peer. Collection metadata and output
+consumers must install all five packages:
+
+```sh
+pnpm add @floating-ui/dom @siemens/ix-icons @stencil/core animejs luxon
+```
+
+Use the equivalent command for npm, pnpm, or another package manager.
+`@siemens/ix-icons` remains required for all `@siemens/ix` consumers. Root,
+custom-elements, loader, hydrate, and framework consumers do not need to install
+the other four optional peers solely for IX because those outputs bundle the
+runtime libraries.
+
 ## Siemens design tokens
 
 IX components now use SI Theme 6 system and reference tokens instead of legacy

packages/core/package.json

@@ -132,16 +132,15 @@
   },
   "siemensix": {
     "dependencies": [
-      "@stencil/core"
+      "@floating-ui/dom",
+      "@stencil/core",
+      "animejs",
+      "luxon"
     ]
   },
-  "dependencies": {
-    "@floating-ui/dom": "^1.6.13",
-    "animejs": "^4.1.2",
-    "luxon": "^3.4.4"
-  },
   "devDependencies": {
     "@axe-core/playwright": "catalog:",
+    "@floating-ui/dom": "^1.6.13",
     "@playwright/test": "catalog:",
     "@siemens/ix-icons": "catalog:",
     "@stencil-community/eslint-plugin": "^0.10.0",
@@ -162,6 +161,7 @@
     "@typescript-eslint/eslint-plugin": "^8.56.1",
     "@typescript-eslint/parser": "^8.56.1",
     "animate.css": "~4.1.1",
+    "animejs": "^4.1.2",
     "autoprefixer": "10.4.20",
     "cssnano": "^6.1.2",
     "cz-conventional-changelog": "^3.3.0",
@@ -172,6 +172,7 @@
     "http-server": "^14.1.1",
     "jest": "^29.7.0",
     "jest-cli": "^29.7.0",
+    "luxon": "^3.4.4",
     "mustache": "^4.2.0",
     "postcss": "^8.4.40",
     "puppeteer": "21.1.1",
@@ -183,7 +184,25 @@
     "vitest": "^4.1.4"
   },
   "peerDependencies": {
-    "@siemens/ix-icons": "^3.5.0"
+    "@floating-ui/dom": "^1.6.13",
+    "@siemens/ix-icons": "^3.5.0",
+    "@stencil/core": "^4.43.5",
+    "animejs": "^4.1.2",
+    "luxon": "^3.4.4"
+  },
+  "peerDependenciesMeta": {
+    "@floating-ui/dom": {
+      "optional": true
+    },
+    "@stencil/core": {
+      "optional": true
+    },
+    "animejs": {
+      "optional": true
+    },
+    "luxon": {
+      "optional": true
+    }
   },
   "config": {
     "commitizen": {

packages/core/src/components.d.ts

@@ -29,7 +29,7 @@ import { DateDropdownOption, DateRangeChangeEvent } from "./components/date-drop
 import { DateInputValidityState } from "./components/date-input/date-input.types";
 import { DateTimeCardCorners } from "./components/date-time-card/date-time-card.types";
 import { DateChangeEvent } from "./components/date-picker/date-picker.events";
-import { DateTime } from "luxon";
+import { DatePickerYearMonth } from "./components/date-picker/date-picker.types";
 import { DateTimeInputValidityState } from "./components/datetime-input/datetime-input.types";
 import { DateTimeDateChangeEvent, DateTimeSelectEvent } from "./components/datetime-picker/datetime-picker.types";
 import { ElementReference } from "./components/utils/element-reference";
@@ -86,7 +86,7 @@ export { DateDropdownOption, DateRangeChangeEvent } from "./components/date-drop
 export { DateInputValidityState } from "./components/date-input/date-input.types";
 export { DateTimeCardCorners } from "./components/date-time-card/date-time-card.types";
 export { DateChangeEvent } from "./components/date-picker/date-picker.events";
-export { DateTime } from "luxon";
+export { DatePickerYearMonth } from "./components/date-picker/date-picker.types";
 export { DateTimeInputValidityState } from "./components/datetime-input/datetime-input.types";
 export { DateTimeDateChangeEvent, DateTimeSelectEvent } from "./components/datetime-picker/datetime-picker.types";
 export { ElementReference } from "./components/utils/element-reference";
@@ -1443,7 +1443,7 @@ export namespace Components {
           * @default DateTime.now().toISO()
          */
         "today": string;
-        "updateSelectedYearMonth": (date: DateTime) => Promise<void>;
+        "updateSelectedYearMonth": (date: DatePickerYearMonth) => Promise<void>;
         /**
           * The index of which day to start the week on, based on the Locale#weekdays array. E.g. if the locale is en-us, weekStartIndex = 1 results in starting the week on Monday.
           * @default 0

packages/core/src/components/date-picker/date-picker.tsx

@@ -32,6 +32,7 @@ import { makeRef } from '../utils/make-ref';
 import { requestAnimationFrameNoNgZone } from '../utils/requestAnimationFrame';
 import { IxDatePickerComponent } from './date-picker-component';
 import type { DateChangeEvent } from './date-picker.events';
+import type { DatePickerYearMonth } from './date-picker.types';
 import { hasKeyboardMode } from '../utils/internal/mixins/setup.mixin';
 
 interface CalendarWeek {
@@ -383,7 +384,7 @@ export class DatePicker
    * @internal
    */
   @Method()
-  async updateSelectedYearMonth(date: DateTime) {
+  async updateSelectedYearMonth(date: DatePickerYearMonth) {
     this.selectedYear = date.year;
     this.selectedMonth = date.month - 1;
   }

packages/core/src/components/date-picker/date-picker.types.ts

@@ -0,0 +1,13 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Siemens AG
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+export interface DatePickerYearMonth {
+  year: number;
+  month: number;
+}