add chunkArray function to array manipulation snippets

Author: LuziferSenpai

public/consolidated/javascript.json

@@ -2,6 +2,18 @@
     {
         "name": "Array Manipulation",
         "snippets": [
+            {
+                "title": "Chunk Array",
+                "description": "Splits an array into chunks based on a number.",
+                "author": "LuziferSenpai",
+                "tags": [
+                    "array",
+                    "partition",
+                    "reduce"
+                ],
+                "contributors": [],
+                "code": "function chunkArray(array, chunkSize) {\n    if (!Array.isArray(array)) {\n        throw new TypeError('Expected an array as the first argument.');\n    }\n    if (typeof chunkSize !== 'number' || chunkSize <= 0) {\n        throw new RangeError('Chunk size must be a positive number.');\n    }\n\n    return array.reduce((chunks, item, index) => {\n        const chunkIndex = Math.floor(index / chunkSize);\n\n        if (!chunks[chunkIndex]) {\n            chunks[chunkIndex] = [];\n        }\n\n        chunks[chunkIndex].push(item);\n\n        return chunks;\n    }, []);\n}\n\n// Usage:\nconst data = [1, 2, 3, 4, 5, 6, 7, 8];\nconst chunked = chunkArray(data, 3); // Returns: [[1, 2, 3], [4, 5, 6], [7, 8]]\n"
+            },
             {
                 "title": "Partition Array",
                 "description": "Splits an array into two arrays based on a callback function.",

snippets/javascript/array-manipulation/chunk-array.md

@@ -0,0 +1,33 @@
+---
+title: Chunk Array
+description: Splits an array into chunks based on a number.
+author: LuziferSenpai
+tags: array,partition,reduce
+---
+
+```js
+function chunkArray(array, chunkSize) {
+    if (!Array.isArray(array)) {
+        throw new TypeError('Expected an array as the first argument.');
+    }
+    if (typeof chunkSize !== 'number' || chunkSize <= 0) {
+        throw new RangeError('Chunk size must be a positive number.');
+    }
+
+    return array.reduce((chunks, item, index) => {
+        const chunkIndex = Math.floor(index / chunkSize);
+
+        if (!chunks[chunkIndex]) {
+            chunks[chunkIndex] = [];
+        }
+
+        chunks[chunkIndex].push(item);
+
+        return chunks;
+    }, []);
+}
+
+// Usage:
+const data = [1, 2, 3, 4, 5, 6, 7, 8];
+const chunked = chunkArray(data, 3); // Returns: [[1, 2, 3], [4, 5, 6], [7, 8]]
+```