初始化环境文件

node_modules/@aws-crypto/util/src/convertToBuffer.ts

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+// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { SourceData } from "@aws-sdk/types";
+import { fromUtf8 as fromUtf8Browser } from "@smithy/util-utf8";
+
+// Quick polyfill
+const fromUtf8 =
+  typeof Buffer !== "undefined" && Buffer.from
+    ? (input: string) => Buffer.from(input, "utf8")
+    : fromUtf8Browser;
+
+export function convertToBuffer(data: SourceData): Uint8Array {
+  // Already a Uint8, do nothing
+  if (data instanceof Uint8Array) return data;
+
+  if (typeof data === "string") {
+    return fromUtf8(data);
+  }
+
+  if (ArrayBuffer.isView(data)) {
+    return new Uint8Array(
+      data.buffer,
+      data.byteOffset,
+      data.byteLength / Uint8Array.BYTES_PER_ELEMENT
+    );
+  }
+
+  return new Uint8Array(data);
+}

node_modules/@aws-crypto/util/src/index.ts

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+// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+export { convertToBuffer } from "./convertToBuffer";
+export { isEmptyData } from "./isEmptyData";
+export { numToUint8 } from "./numToUint8";
+export {uint32ArrayFrom} from './uint32ArrayFrom';

node_modules/@aws-crypto/util/src/isEmptyData.ts

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+// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { SourceData } from "@aws-sdk/types";
+
+export function isEmptyData(data: SourceData): boolean {
+  if (typeof data === "string") {
+    return data.length === 0;
+  }
+
+  return data.byteLength === 0;
+}

node_modules/@aws-crypto/util/src/numToUint8.ts

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+// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+export function numToUint8(num: number) {
+  return new Uint8Array([
+    (num & 0xff000000) >> 24,
+    (num & 0x00ff0000) >> 16,
+    (num & 0x0000ff00) >> 8,
+    num & 0x000000ff,
+  ]);
+}

node_modules/@aws-crypto/util/src/uint32ArrayFrom.ts

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+// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+// IE 11 does not support Array.from, so we do it manually
+export function uint32ArrayFrom(a_lookUpTable: Array<number>): Uint32Array {
+  if (!Uint32Array.from) {
+    const return_array = new Uint32Array(a_lookUpTable.length)
+    let a_index = 0
+    while (a_index < a_lookUpTable.length) {
+      return_array[a_index] = a_lookUpTable[a_index]
+      a_index += 1
+    }
+    return return_array
+  }
+  return Uint32Array.from(a_lookUpTable)
+}