feat(node-sdk): decrease memory usage of rate limiter slightly

packages/node-sdk/README.md

@@ -10,16 +10,13 @@ Install using `yarn` or `npm` with:
 
 > `yarn add -s @bucketco/node-sdk` or `npm install -s @bucketco/node-sdk`.
 
-Other supported languages/frameworks are in the
-[Supported languages](https://docs.bucket.co/quickstart/supported-languages)
-documentation pages.
+Other supported languages/frameworks are in the [Supported languages](https://docs.bucket.co/quickstart/supported-languages) documentation pages.
 
-You can also [use the HTTP API directly](https://docs.bucket.co/reference/http-tracking-api)
+You can also [use the HTTP API directly](https://docs.bucket.co/api/http-api)
 
 ## Basic usage
 
-To get started you need to obtain your secret key from the
-[environment settings](https://app.bucket.co/envs/current/settings/app-environments)
+To get started you need to obtain your secret key from the [environment settings](https://app.bucket.co/envs/current/settings/app-environments)
 in Bucket.
 
 > [!CAUTION]
@@ -138,8 +135,8 @@ await client.flush();
 
 ### Rate Limiting
 
-The SDK includes automatic rate limiting for feature events to prevent overwhelming the API. Rate limiting is applied per
-unique combination of feature key and context. The rate limiter window size is configurable:
+The SDK includes automatic rate limiting for feature events to prevent overwhelming the API.
+Rate limiting is applied per unique combination of feature key and context. The rate limiter window size is configurable:
 
 ```typescript
 const client = new BucketClient({

packages/node-sdk/src/utils.ts

@@ -160,7 +160,7 @@ export function hashObject(obj: Record<string, any>): string {
   const hash = createHash("sha1");
   updateSha1Hash(hash, obj);
 
-  return hash.digest("hex");
+  return hash.digest("base64");
 }
 
 export function once<T extends () => ReturnType<T>>(

packages/node-sdk/test/client.test.ts

@@ -1596,9 +1596,7 @@ describe("BucketClient", () => {
       await client.initialize();
       client.getFeatures({ user, company, other: otherContext });
 
-      expect(isAllowedSpy).toHaveBeenCalledWith(
-        "d461e93fe41f6297ab43402d0fc6d63e2444e07d",
-      );
+      expect(isAllowedSpy).toHaveBeenCalledWith("1GHpP+QfYperQ0AtD8bWPiRE4H0=");
     });
 
     it("should return evaluated features when only user is defined", async () => {

packages/node-sdk/test/utils.test.ts

@@ -167,7 +167,7 @@ describe("hashObject", () => {
     expectedHash.update("name");
     expectedHash.update("Alice");
 
-    expect(hash).toBe(expectedHash.digest("hex"));
+    expect(hash).toBe(expectedHash.digest("base64"));
   });
 
   it("should hash arrays within objects", () => {
@@ -180,7 +180,7 @@ describe("hashObject", () => {
     expectedHash.update("2");
     expectedHash.update("3");
 
-    expect(hash).toBe(expectedHash.digest("hex"));
+    expect(hash).toBe(expectedHash.digest("base64"));
   });
 });