Merge pull request #15103 from primefaces/stepper

Stepper

src/app/components/stepper/ng-package.json

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+{
+    "$schema": "ng-packagr/ng-package.schema.json",
+    "lib": {
+      "entryFile": "public_api.ts"
+    }
+  }

src/app/components/stepper/public_api.ts

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+export * from './stepper';
+export * from './stepper.interface';

src/app/components/stepper/stepper.css

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+@layer primeng {
+    .p-stepper-vertical .p-stepper-panel > .p-stepper-toggleable-content {
+        overflow: hidden;
+    }
+
+    .p-stepper-vertical .p-stepper-panel-active > .p-stepper-toggleable-content:not(.ng-animating) {
+        overflow: inherit;
+    }
+}

src/app/components/stepper/stepper.interface.ts

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+import { TemplateRef } from '@angular/core';
+import { Stepper } from './stepper';
+
+/**
+ * Defines valid templates in Stepper.
+ * @group Templates
+ */
+export interface StepperTemplates {
+    /**
+     * Custom start template.
+     */
+    start(): TemplateRef<any>;
+    /**
+     * Custom end template.
+     */
+    end(): TemplateRef<any>;
+}
+/**
+ * Custom active step change event.
+ * @see {@link Stepper.onActiveStepChange}
+ * @group Events
+ */
+export interface ActiveStepChangeEvent {
+    /**
+     * Emitted when the value changes.
+     */
+    value: number | undefined | null;
+}