🤖 Merge PR DefinitelyTyped#72493 Add isInValuePreview type to custom-functions-runtime package's invocation object by @adityaprasadmsft

Author: adityaprasadmsft

types/custom-functions-runtime/custom-functions-runtime-tests.ts

@@ -14,6 +14,10 @@ function callerAddress(invocation: CustomFunctions.Invocation) {
     return invocation.address;
 }
 
+function isInValuePreview(invocation: CustomFunctions.Invocation) {
+  return invocation.isInValuePreview;
+}
+
 async function getStockValues(ticker: string): Promise<number> {
     const response = await fetch(`myService.com/prices/${ticker}`);
     return (await response.json())["price"];

types/custom-functions-runtime/index.d.ts

@@ -75,6 +75,16 @@ declare namespace CustomFunctions {
          * [Api set: CustomFunctionsRuntime 1.3]
          */
         parameterAddresses?: string[];
+
+        /**
+         * Indicates whether the function is invoked as part of the formula value preview.
+         * `isInValuePreview` is read-only and can't be set by a custom functions add-in.
+         * This value is `true` if the function is invoked to preview the formula value; otherwise it is `false`.
+         * 
+         * @remarks
+         * [Api set: CustomFunctionsRuntime 1.5]
+         */
+        isInValuePreview?: string;
     }
 
     /**