Merge pull request #19439 from onatm/react-select/add-onNewOptionClick

[react-select] add onNewOptionClick prop to ReactCreatableSelectProps

types/react-select/index.d.ts

@@ -7,6 +7,7 @@
 //                 Mark Vujevits <https://github.com/vujevits>
 //                 Mike Deverell <https://github.com/devrelm>
 //                 MartynasZilinskas <https://github.com/MartynasZilinskas>
+//                 Onat Yigit Mercan <https://github.com/onatm>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3
 
@@ -49,6 +50,7 @@ declare namespace ReactSelectClass {
     type OnChangeSingleHandler<TValue = OptionValues> = OnChangeHandler<Option<TValue>>;
     type OnChangeMultipleHandler<TValue = OptionValues> = OnChangeHandler<Options<TValue>>;
     type OnChangeHandler<TOption = Option | Options> = (newValue: TOption | null) => void;
+    type OnNewOptionClickHandler = (option: Option) => void;
 
     type LoadOptionsHandler = LoadOptionsAsyncHandler | LoadOptionsLegacyHandler;
     type LoadOptionsAsyncHandler = (input: string) => Promise<AutocompleteResult>;
@@ -453,6 +455,11 @@ declare namespace ReactSelectClass {
          * Decides if a keyDown event (eg its 'keyCode') should result in the creation of a new option.
          */
         shouldKeyDownEventCreateNewOption?: ShouldKeyDownEventCreateNewOptionHandler;
+
+        /**
+         * new option click handler: function (option) {}
+         */
+        onNewOptionClick?: OnNewOptionClickHandler;
     }
 
     interface ReactAsyncSelectProps extends ReactSelectProps {