diff --git a/client/init.ts b/client/init.ts
index 8b4f726..f6da76b 100644
--- a/client/init.ts
+++ b/client/init.ts
@@ -108,7 +108,7 @@ const fetchJSON = async <T>(
   init?: RequestInit,
 ): Promise<T> => {
   const response = await fetchSuccessResponse(path, opts, init);
-  return response.json<T>();
+  return response.json() as Promise<T>;
 };
 
 export const start = async <
@@ -189,7 +189,7 @@ export const get = async <
   if (!response.ok) {
     throw new Error(`error was thrown from durable ${response.status}`);
   }
-  return response.json<WorkflowExecution<TArgs, TResult, TMetadata>>();
+  return response.json() as Promise<WorkflowExecution<TArgs, TResult, TMetadata>>;
 };
 
 export const cancel = async (
diff --git a/context.ts b/context.ts
index 603077b..a091bd2 100644
--- a/context.ts
+++ b/context.ts
@@ -67,7 +67,7 @@ export class WorkflowContext<TMetadata extends Metadata = Metadata> {
     exec: WorkflowExecutionBase,
     opts?: ClientOptions,
   ): LocalActivityCommand {
-    return this.callLocalActivity(() => start(exec, opts));
+    return this.callLocalActivity(() => start(exec, true, opts));
   }
 
   /**
diff --git a/security/channel.ts b/security/channel.ts
index e032ae6..5069edc 100644
--- a/security/channel.ts
+++ b/security/channel.ts
@@ -69,7 +69,8 @@ export const asChannel = async <Send, Recv>(
     recv.push(event.data);
   });
   socket.addEventListener("error", (event) => {
-    console.log("error", JSON.stringify(event.error), event.message);
+    const evt = event as any;
+    console.log("error", JSON.stringify(evt.error), evt.message);
   });
 
   await Promise.race([ready.wait(), closed.wait()]);
diff --git a/security/jwks.ts b/security/jwks.ts
index afe7522..01cf3e2 100644
--- a/security/jwks.ts
+++ b/security/jwks.ts
@@ -26,7 +26,7 @@ const fetchKeyFromAddr = async (
   if (!response.ok) {
     return null;
   }
-  const { keys = [] } = await response.json<JwksKeys>();
+  const { keys = [] } = await (response.json() as Promise<JwksKeys>);
   const key = kid ? keys.find((key) => key?.kid === kid) ?? keys[0] : keys[0];
   if (!key) {
     return null;
diff --git a/security/keys.ts b/security/keys.ts
index 2bc170b..5d32e90 100644
--- a/security/keys.ts
+++ b/security/keys.ts
@@ -27,6 +27,7 @@ export const importJWK = (
   jwk: JsonWebKey,
   usages?: string[],
 ): Promise<CryptoKey> =>
+  // @ts-ignore
   crypto.subtle.importKey(
     "jwk",
     jwk,
@@ -45,19 +46,24 @@ export const importJWKFromString = (
   );
 
 const getOrGenerateKeyPair = async (): Promise<[JsonWebKey, JsonWebKey]> => {
-  const hasProcess = typeof process !== "undefined";
   // @ts-ignore
-  const publicKeyEnvValue = typeof Deno !== "undefined"
+  const isDeno = typeof Deno !== "undefined";
+  // @ts-ignore
+  const publicKeyEnvValue = isDeno
     // @ts-ignore
     ? Deno.env.get(PUBLIC_KEY_ENV_VAR)
-    : hasProcess
+    // @ts-ignore
+    : typeof process !== "undefined"
+    // @ts-ignore
     ? process.env[PUBLIC_KEY_ENV_VAR]
     : undefined;
   // @ts-ignore
-  const privateKeyEnvValue = typeof Deno !== "undefined"
+  const privateKeyEnvValue = isDeno
     // @ts-ignore
     ? Deno.env.get(PRIVATE_KEY_ENV_VAR)
-    : hasProcess
+    // @ts-ignore
+    : typeof process !== "undefined"
+    // @ts-ignore
     ? process.env[PRIVATE_KEY_ENV_VAR]
     : undefined;
   if (!publicKeyEnvValue || !privateKeyEnvValue) {