fix(tsc): add .at() types manually to tsc (#11443)

Fixes: #11441

1 files changed, 120 insertions, 0 deletions

diff --git a/cli/dts/lib.esnext.array.d.ts b/cli/dts/lib.esnext.array.d.ts
new file mode 100644
index 000000000..939edf6b8
--- /dev/null
+++ b/cli/dts/lib.esnext.array.d.ts
@@ -0,0 +1,120 @@
+/*! *****************************************************************************
+Copyright (c) Microsoft Corporation. All rights reserved.
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at http://www.apache.org/licenses/LICENSE-2.0
+
+THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
+WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
+MERCHANTABLITY OR NON-INFRINGEMENT.
+
+See the Apache Version 2.0 License for specific language governing permissions
+and limitations under the License.
+***************************************************************************** */
+
+/// <reference no-default-lib="true"/>
+
+interface Array<T> {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): T | undefined;
+}
+
+interface ReadonlyArray<T> {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): T | undefined;
+}
+
+interface Int8Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): number | undefined;
+}
+
+interface Uint8Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): number | undefined;
+}
+
+interface Uint8ClampedArray {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): number | undefined;
+}
+
+interface Int16Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): number | undefined;
+}
+
+interface Uint16Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): number | undefined;
+}
+
+interface Int32Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): number | undefined;
+}
+
+interface Uint32Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): number | undefined;
+}
+
+interface Float32Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): number | undefined;
+}
+
+interface Float64Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): number | undefined;
+}
+
+interface BigInt64Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): bigint | undefined;
+}
+
+interface BigUint64Array {
+  /**
+   * Access item by relative indexing.
+   * @param index index to access.
+   */
+  at(index: number): bigint | undefined;
+}