buildfiles

node_modules/es-toolkit/dist/array/sampleSize.mjs

@@ -0,0 +1,20 @@
+import { randomInt } from '../math/randomInt.mjs';
+
+function sampleSize(array, size) {
+    if (size > array.length) {
+        throw new Error('Size must be less than or equal to the length of array.');
+    }
+    const result = new Array(size);
+    const selected = new Set();
+    for (let step = array.length - size, resultIndex = 0; step < array.length; step++, resultIndex++) {
+        let index = randomInt(0, step + 1);
+        if (selected.has(index)) {
+            index = step;
+        }
+        selected.add(index);
+        result[resultIndex] = array[index];
+    }
+    return result;
+}
+
+export { sampleSize };