refactor(docs): Add a banner to the README

Author: MaksymStoianov

README.md

@@ -47,6 +47,8 @@ export { appendRow } from "./appendRow";
 export { appendRows } from "./appendRows";
 export { convertRichTextToHtml } from "./convertRichTextToHtml";
 export { doGridRangesIntersect } from "./doGridRangesIntersect";
+export { extractRangeFromA1Notation } from "./extractRangeFromA1Notation";
+export { extractSheetNameFromA1Notation } from "./extractSheetNameFromA1Notation";
 export { getColumnIndexByLetter } from "./getColumnIndexByLetter";
 export { getColumnLetterByIndex } from "./getColumnLetterByIndex";
 export { getSheetById } from "./getSheetById";

docs/assets/google-apps-script-utils-author-MaksymStoianov-artist-DarynaMikhailenko-2.PNG

@@ -9,7 +9,7 @@ import { parseA1Notation } from "./parseA1Notation";
  * Updates or sets the sheet name within an A1 notation string, while preserving the range information (e.g., `A1:B2`).
  *
  * @param       {string} a1Notation - The source A1 notation, which may or may not include a sheet name (e.g., `'Sheet Name'!A1:B2` or `A1:B2`).
- * @param       {string | null} [sheetName] - The new sheet name to set.
+ * @param       {string|null} [sheetName] - The new sheet name to set.
  * Pass `null` or `undefined` to remove any existing sheet name and return only the range.
  * @returns     {string} The new A1 notation string with the updated sheet name (e.g., `'New Sheet'!A1:B2` or just `A1:B2`).
  * @throws      {@link IllegalArgumentException}

docs/assets/google-apps-script-utils-author-MaksymStoianov-artist-DarynaMikhailenko-2.jpg

@@ -1,4 +1,4 @@
-import { isString } from "@/lang";
+import { isString } from "../../lang";
 import { objectToString } from "../object";
 import { isNil } from "./isNil";
 import { isObject } from "./isObject";
@@ -17,19 +17,23 @@ import { isObject } from "./isObject";
  * - Returns `false` for any other value, including numbers (even 0), booleans, functions,
  * or objects that are not empty according to the above rules.
  *
- * @param   value - The value to check for emptiness.
- * @returns `true` if the value is empty; otherwise, `false`.
+ * @param   {unknown} value - The value to check for emptiness.
+ * @param   {boolean} [strict=false] - The strictness mode for string validation.
+ * - If `false` (default), strings containing only whitespace characters (spaces, tabs, newlines)
+ * are considered empty (using `trim()`). This is known as "blank" check.
+ * - If `true`, only a string with zero length (`""`) is considered empty.
+ * @returns {boolean} `true` if the value is empty; otherwise, `false`.
  * @see     {@link nonEmpty}
  * @since   1.0.0
  * @version 1.1.0
  */
-export function isEmpty(value: unknown): boolean {
+export function isEmpty(value: unknown, strict: boolean = false): boolean {
   if (isNil(value)) {
     return true;
   }
 
   if (isString(value)) {
-    return value.length === 0;
+    return (strict ? value : value.trim()).length === 0;
   }
 
   if (Array.isArray(value)) {