diff --git a/.changeset/chilly-lamps-post.md b/.changeset/chilly-lamps-post.md
new file mode 100644
index 00000000000..80d6487d9c2
--- /dev/null
+++ b/.changeset/chilly-lamps-post.md
@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+Handle environments where process is not defined
diff --git a/packages/thirdweb/src/utils/any-evm/zksync/constants.ts b/packages/thirdweb/src/utils/any-evm/zksync/constants.ts
index 734f9d3699b..b980b009b54 100644
--- a/packages/thirdweb/src/utils/any-evm/zksync/constants.ts
+++ b/packages/thirdweb/src/utils/any-evm/zksync/constants.ts
@@ -3,7 +3,9 @@ export const ZKSYNC_SINGLETON_FACTORY =
 export const CONTRACT_DEPLOYER_ADDRESS =
   "0x0000000000000000000000000000000000008006" as const;
 export const KNOWN_CODES_STORAGE = "0x0000000000000000000000000000000000008004";
-export const PUBLISHED_PRIVATE_KEY = process.env.ZKSYNC_PUBLISHED_PRIVATE_KEY;
+export const PUBLISHED_PRIVATE_KEY = process
+  ? process.env.ZKSYNC_PUBLISHED_PRIVATE_KEY
+  : undefined;
 
 export const singletonFactoryAbi = [
   "function deploy(bytes32,bytes32,bytes) external payable",
diff --git a/packages/thirdweb/src/utils/process.ts b/packages/thirdweb/src/utils/process.ts
index 7d5b0d5723e..6c8a67ba03e 100644
--- a/packages/thirdweb/src/utils/process.ts
+++ b/packages/thirdweb/src/utils/process.ts
@@ -1,4 +1,5 @@
 export const IS_DEV =
-  process.env.NODE_ENV === "development" || process.env.NODE_ENV === "test";
+  process &&
+  (process.env.NODE_ENV === "development" || process.env.NODE_ENV === "test");
 
-export const IS_TEST = process.env.NODE_ENV === "test";
+export const IS_TEST = process && process.env.NODE_ENV === "test";