diff --git a/libs/shared/flagd-core/src/lib/feature-flag.ts b/libs/shared/flagd-core/src/lib/feature-flag.ts
index 7c5bf6f7f..30a7079cf 100644
--- a/libs/shared/flagd-core/src/lib/feature-flag.ts
+++ b/libs/shared/flagd-core/src/lib/feature-flag.ts
@@ -1,5 +1,5 @@
 import { FlagValue } from '@openfeature/core';
-import { createHash } from 'crypto';
+import { sha1 } from 'object-hash';
 
 /**
  * Flagd flag configuration structure mapping to schema definition.
@@ -26,7 +26,7 @@ export class FeatureFlag {
     this._defaultVariant = flag['defaultVariant'];
     this._variants = new Map<string, FlagValue>(Object.entries(flag['variants']));
     this._targeting = flag['targeting'];
-    this._hash = createHash('sha1').update(JSON.stringify(flag)).digest('base64');
+    this._hash = sha1(flag);
   }
 
   get hash(): string {
diff --git a/libs/shared/flagd-core/tsconfig.lib.json b/libs/shared/flagd-core/tsconfig.lib.json
index 4befa7f09..36e88999e 100644
--- a/libs/shared/flagd-core/tsconfig.lib.json
+++ b/libs/shared/flagd-core/tsconfig.lib.json
@@ -3,7 +3,7 @@
   "compilerOptions": {
     "outDir": "../../../dist/out-tsc",
     "declaration": true,
-    "types": ["node"]
+    "types": []
   },
   "include": ["src/**/*.ts"],
   "exclude": ["jest.config.ts", "src/**/*.spec.ts", "src/**/*.test.ts"]
diff --git a/libs/shared/flagd-core/tsconfig.spec.json b/libs/shared/flagd-core/tsconfig.spec.json
index b2ee74a6b..97775bd24 100644
--- a/libs/shared/flagd-core/tsconfig.spec.json
+++ b/libs/shared/flagd-core/tsconfig.spec.json
@@ -3,7 +3,7 @@
   "compilerOptions": {
     "outDir": "../../../dist/out-tsc",
     "module": "commonjs",
-    "types": ["jest", "node"]
+    "types": ["jest"]
   },
   "include": ["jest.config.ts", "src/**/*.test.ts", "src/**/*.spec.ts", "src/**/*.d.ts"]
 }