Added style class definitions to *Style.d.ts

components/lib/select/style/SelectStyle.d.ts

@@ -1,3 +1,33 @@
+/**
+ *
+ * Select also known as Select, is used to choose an item from a collection of options.
+ *
+ * [Live Demo](https://www.primevue.org/select/)
+ *
+ * @module selectstyle
+ *
+ */
 import { BaseStyle } from '../../base/style';
 
+export enum SelectClasses {
+    root = 'p-select',
+    label = 'p-select-label',
+    clearIcon = 'p-select-clear-icon',
+    dropdown = 'p-select-dropdown',
+    loadingicon = 'p-select-loading-icon',
+    dropdownIcon = 'p-select-dropdown-icon',
+    overlay = 'p-select-overlay',
+    header = 'p-select-header',
+    pcFilter = 'p-select-filter',
+    listContainer = 'p-select-list-container',
+    list = 'p-select-list',
+    optionGroup = 'p-select-option-group',
+    optionGroupLabel = 'p-select-option-group-label',
+    option = 'p-select-option',
+    optionLabel = 'p-select-option-label',
+    optionCheckIcon = 'p-select-option-check-icon',
+    optionBlankIcon = 'p-select-option-blank-icon',
+    emptyMessage = 'p-select-empty-message'
+}
+
 export interface SelectStyle extends BaseStyle {}