make imports more es friendly. provide default export

src/cognito-srp-helper.ts

@@ -1,4 +1,4 @@
-import { Buffer } from "buffer/"; // use the browser compatible buffer library
+import { Buffer } from "buffer/index.js"; // use the browser compatible buffer library
 import CryptoJS from "crypto-js";
 import { BigInteger } from "jsbn";
 

src/constants.ts

@@ -1,4 +1,4 @@
-import { Buffer } from "buffer/"; // use the browser compatible buffer library
+import { Buffer } from "buffer/index.js"; // use the browser compatible buffer library
 import { BigInteger } from "jsbn";
 
 import { hexHash, padHex } from "./utils";

src/index.ts

@@ -1,3 +1,13 @@
+import * as CognitoSrpHelper from "./cognito-srp-helper";
+import * as Errors from "./errors";
+import * as Types from "./types";
+
 export * from "./cognito-srp-helper";
 export * from "./errors";
 export * from "./types";
+
+export default {
+  ...CognitoSrpHelper,
+  ...Errors,
+  ...Types,
+};

src/utils.ts

@@ -3,8 +3,8 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import { Buffer } from "buffer/"; // use the browser compatible buffer library
-import { lib, SHA256 } from "crypto-js";
+import { Buffer } from "buffer/index.js"; // use the browser compatible buffer library
+import CryptoJS from "crypto-js";
 import { BigInteger } from "jsbn";
 
 import { HEX_TO_SHORT } from "./constants";
@@ -16,8 +16,8 @@ import { HEX_TO_SHORT } from "./constants";
  * @returns Hex-encoded hash.
  */
 export const hash = (buf: Buffer | string): string => {
-  const str = buf instanceof Buffer ? lib.WordArray.create(buf) : buf;
-  const hashHex = SHA256(str).toString();
+  const str = buf instanceof Buffer ? CryptoJS.lib.WordArray.create(buf) : buf;
+  const hashHex = CryptoJS.SHA256(str).toString();
   const completeHash = new Array(64 - hashHex.length).join("0") + hashHex;
 
   return completeHash;
@@ -118,7 +118,7 @@ export const padHex = (bigInt: BigInteger): string => {
  * @returns Fixed-length sequence of random bytes
  */
 export const randomBytes = (nBytes: number): Buffer => {
-  const bytes = Buffer.from(lib.WordArray.random(nBytes).toString(), "hex");
+  const bytes = Buffer.from(CryptoJS.lib.WordArray.random(nBytes).toString(), "hex");
 
   return bytes;
 };