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convertToBuffer.ts790 B · 31 lines
// 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 polyfillconst 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);}