exposed number conversion functions

src/types/index.d.ts

@@ -199,3 +199,20 @@ export default class linkedInAPIClass {
     private resetCookies: boolean;
     private helper: any;
 }
+
+/**
+ * Finds the range index for a given number.
+ * 
+ * @param number The number to find the range index for.
+ * @returns The corresponding range index as a string.
+ */
+export function findRangeIndex(number: number): string | -1;
+
+/**
+ * Converts an array of numbers to a comma-separated string of range indices.
+ * 
+ * @param nums An array of numbers to convert to range indices.
+ * @returns A comma-separated string of range indices.
+ * @throws An error if more than 8 numbers are provided or if any number is invalid.
+ */
+export function numsToSizes(...nums: number[]): string;