feat: make object list page size configurable

tests/lib/object-list-pagination.test.ts

@@ -0,0 +1,26 @@
+import test from "node:test"
+import assert from "node:assert/strict"
+import {
+  OBJECT_LIST_DEFAULT_PAGE_SIZE,
+  OBJECT_LIST_PAGE_SIZE_OPTIONS,
+  normalizeObjectListPageSize,
+} from "../../lib/object-list-pagination.js"
+
+test("object list pagination defaults to 100 keys per page", () => {
+  assert.equal(OBJECT_LIST_DEFAULT_PAGE_SIZE, 100)
+})
+
+test("object list pagination supports S3-safe page size options", () => {
+  assert.deepEqual([...OBJECT_LIST_PAGE_SIZE_OPTIONS], [25, 50, 100, 500, 1000])
+})
+
+test("normalizeObjectListPageSize keeps supported values", () => {
+  assert.equal(normalizeObjectListPageSize(25), 25)
+  assert.equal(normalizeObjectListPageSize(1000), 1000)
+})
+
+test("normalizeObjectListPageSize falls back for unsupported values", () => {
+  assert.equal(normalizeObjectListPageSize(10), OBJECT_LIST_DEFAULT_PAGE_SIZE)
+  assert.equal(normalizeObjectListPageSize("100"), OBJECT_LIST_DEFAULT_PAGE_SIZE)
+  assert.equal(normalizeObjectListPageSize(undefined), OBJECT_LIST_DEFAULT_PAGE_SIZE)
+})