Index: node_modules/es-toolkit/dist/array/flatMapAsync.d.mts
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--- node_modules/es-toolkit/dist/array/flatMapAsync.d.mts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
+++ node_modules/es-toolkit/dist/array/flatMapAsync.d.mts	(revision a762898ecd37a452c782821d4c2c4955c6ed2521)
@@ -0,0 +1,37 @@
+interface FlatMapAsyncOptions {
+    concurrency?: number;
+}
+/**
+ * Maps each element in an array using an async callback function and flattens the result by one level.
+ *
+ * This is equivalent to calling `mapAsync` followed by `flat(1)`, but more efficient.
+ * Each callback should return an array, and all returned arrays are concatenated into
+ * a single output array.
+ *
+ * @template T - The type of elements in the input array.
+ * @template R - The type of elements in the arrays returned by the callback.
+ * @param {readonly T[]} array The array to transform.
+ * @param {(item: T, index: number, array: readonly T[]) => Promise<R[]>} callback An async function that transforms each element into an array.
+ * @param {FlatMapAsyncOptions} [options] Optional configuration object.
+ * @param {number} [options.concurrency] Maximum number of concurrent async operations. If not specified, all operations run concurrently.
+ * @returns {Promise<R[]>} A promise that resolves to a flattened array of transformed values.
+ * @example
+ * const users = [{ id: 1 }, { id: 2 }];
+ * const allPosts = await flatMapAsync(users, async (user) => {
+ *   return await fetchUserPosts(user.id);
+ * });
+ * // Returns: [post1, post2, post3, ...] (all posts from all users)
+ *
+ * @example
+ * // With concurrency limit
+ * const numbers = [1, 2, 3];
+ * const results = await flatMapAsync(
+ *   numbers,
+ *   async (n) => await fetchRelatedItems(n),
+ *   { concurrency: 2 }
+ * );
+ * // Processes at most 2 operations concurrently
+ */
+declare function flatMapAsync<T, R>(array: readonly T[], callback: (item: T, index: number, array: readonly T[]) => Promise<R[]>, options?: FlatMapAsyncOptions): Promise<R[]>;
+
+export { flatMapAsync };