diff --git a/relayer/middleware/staging-area.middleware.ts b/relayer/middleware/staging-area.middleware.ts
index ca23912a..9a43ede7 100644
--- a/relayer/middleware/staging-area.middleware.ts
+++ b/relayer/middleware/staging-area.middleware.ts
@@ -14,24 +14,31 @@ export interface StagingAreaContext extends Context {
   kv: StagingAreaKeyLock;
 }
 
-export interface StagingAreaOpts {
-  redisClusterEndpoints?: ClusterNode[];
-  redisCluster?: ClusterOptions;
+export type StagingAreaOpts = (
+  | {
+      redisClusterEndpoints: ClusterNode[];
+      redisCluster: ClusterOptions;
+    }
+  | {}
+) & {
   redis?: RedisOptions;
   namespace?: string;
-}
+};
 
 export function stagingArea(
   opts: StagingAreaOpts = {},
 ): Middleware<StagingAreaContext> {
-  opts.redis = opts.redis || { host: "localhost", port: 6379 };
+  const options = {
+    redis: { host: "localhost", port: 6379 },
+    ...opts,
+  }
 
   // TODO: maybe refactor redis pool for all plugins that rely on it.
   const factory = {
     create: async function () {
-      const redis = opts.redisCluster
+      const redis = "redisCluster" in opts
         ? new Redis.Cluster(opts.redisClusterEndpoints, opts.redisCluster)
-        : new Redis(opts.redis);
+        : new Redis(options.redis);
       return redis;
     },
     destroy: async function () {
@@ -51,8 +58,8 @@ export function stagingArea(
 
     ctx.kv = new DefaultStagingAreaKeyLock(
       redis,
-      ctx.logger,
       opts.namespace ?? "default",
+      ctx.logger,
     );
     try {
       ctx.logger?.debug("Staging area attached to context");
@@ -83,8 +90,8 @@ class DefaultStagingAreaKeyLock implements StagingAreaKeyLock {
 
   constructor(
     private readonly redis: Redis | Cluster,
-    readonly logger: Logger,
     namespace: string,
+    readonly logger?: Logger,
   ) {
     this.stagingAreaKey = `stagingAreas:${sanitize(namespace)}`;
   }
@@ -117,14 +124,14 @@ class DefaultStagingAreaKeyLock implements StagingAreaKeyLock {
       };
       return tx ? await op((tx as unknown as Tx).redis) : op(this.redis);
     } catch (e) {
-      // Figure out how to catch wath error in ioredis
+      // Figure out how to catch watch error in ioredis
       // if (e instanceof WatchError) {
       //   // todo: retry in this case?
       //   this.logger.warn("Staging area key was mutated while executing");
       // } else {
       //   this.logger.error("Error while reading and writing staging area keys");
       // }
-      this.logger.error(e);
+      this.logger?.error(e);
       throw e;
     }
   }
diff --git a/relayer/middleware/tokenBridge.middleware.ts b/relayer/middleware/tokenBridge.middleware.ts
index a502efb3..d3b04785 100644
--- a/relayer/middleware/tokenBridge.middleware.ts
+++ b/relayer/middleware/tokenBridge.middleware.ts
@@ -136,11 +136,15 @@ export function tokenBridgeContracts(): Middleware<TokenBridgeContext> {
     }
     // User might or might not use sui, so a provider for sui
     // might not be present.
-    if (!suiState && ctx.providers.sui[0]) {
-      suiState = await getObjectFields(
+    if (suiState === undefined && ctx.providers.sui.length > 0) {
+      const fields = await getObjectFields(
         ctx.providers.sui[0],
-        CONTRACTS[ctx.env.toUpperCase() as "MAINNET"].sui.token_bridge,
+        CONTRACTS[ctx.env.toUpperCase() as "MAINNET" | "TESTNET" | "DEVNET"].sui.token_bridge,
       );
+      if (fields === null) {
+        throw new UnrecoverableError("Couldn't read ")
+      }
+      suiState = fields;
       tokenBridgeEmitterCapSui = suiState?.emitter_cap.fields.id.id;
     }
     if (!evmContracts) {
diff --git a/relayer/middleware/wallet/wallet-management.ts b/relayer/middleware/wallet/wallet-management.ts
index 1e8ab749..0f273bff 100644
--- a/relayer/middleware/wallet/wallet-management.ts
+++ b/relayer/middleware/wallet/wallet-management.ts
@@ -30,6 +30,8 @@ import {
 } from "@certusone/wormhole-sdk/lib/cjs/utils/consts.js";
 import { Environment } from "../../environment.js";
 
+export type MetricsOptions = (WalletManagerFullConfig["options"] & {}) ["metrics"] & {};
+
 const networks = {
   [Environment.MAINNET]: {
     [CHAIN_ID_ETH]: "mainnet",
@@ -140,7 +142,7 @@ export function startWalletManagement(
   env: Environment,
   privateKeys: PrivateKeys,
   tokensByChain?: TokensByChain,
-  metricsOpts?: WalletManagerFullConfig["options"]["metrics"],
+  metricsOpts?: MetricsOptions,
   logger?: Logger,
 ): IClientWalletManager | ILibraryWalletManager {
   const wallets = buildWalletsConfig(env, privateKeys, tokensByChain);
diff --git a/relayer/middleware/wallet/walletToolBox.ts b/relayer/middleware/wallet/walletToolBox.ts
index cba2df63..f5425cc9 100644
--- a/relayer/middleware/wallet/walletToolBox.ts
+++ b/relayer/middleware/wallet/walletToolBox.ts
@@ -44,6 +44,8 @@ export async function createWalletToolbox(
       const seiPkBuf = Buffer.from(privateKey, "hex");
       return createSeiWalletToolBox(providers, seiPkBuf);
   }
+
+  throw new Error(`Unknown chain id ${chainId}`);
 }
 
 function createEVMWalletToolBox(
@@ -51,7 +53,11 @@ function createEVMWalletToolBox(
   privateKey: string,
   chainId: wh.EVMChainId,
 ): WalletToolBox<EVMWallet> {
-  const wallet = new ethers.Wallet(privateKey, providers.evm[chainId][0]);
+  const chainProviders = providers.evm[chainId];
+  if (chainProviders === undefined || chainProviders.length === 0) {
+    throw new Error(`No provider found for chain ${chainId}`);
+  }
+  const wallet = new ethers.Wallet(privateKey, chainProviders[0]);
   return {
     ...providers,
     wallet: wallet,
diff --git a/relayer/rpc/fail-fast-grpc-transport.ts b/relayer/rpc/fail-fast-grpc-transport.ts
index f65a41bd..518b324e 100644
--- a/relayer/rpc/fail-fast-grpc-transport.ts
+++ b/relayer/rpc/fail-fast-grpc-transport.ts
@@ -85,6 +85,10 @@ class TimeoutableTransport implements pkg.grpc.Transport {
   }
 
   sendMessage(msgBytes: Uint8Array): void {
+    if (this.request === undefined) {
+      throw new Error("Attempted to send a message without a request context");
+    }
+
     if (
       !this.options.methodDefinition.requestStream &&
       !this.options.methodDefinition.responseStream
diff --git a/relayer/storage/redis-storage.ts b/relayer/storage/redis-storage.ts
index ff56a2c7..2069f1df 100644
--- a/relayer/storage/redis-storage.ts
+++ b/relayer/storage/redis-storage.ts
@@ -89,11 +89,11 @@ const defaultOptions: Partial<StorageOptions> = {
 };
 
 export class RedisStorage implements Storage {
-  logger: Logger;
+  logger?: Logger;
   vaaQueue: Queue<JobData, string[], string>;
   public registry: Registry;
-  workerId: string;
-  private worker: Worker<JobData, void, string>;
+  workerId?: string;
+  private worker?: Worker<JobData, void, string>;
   private readonly prefix: string;
   private readonly redis: Cluster | Redis;
   private metrics: StorageMetrics;
@@ -109,7 +109,7 @@ export class RedisStorage implements Storage {
     this.opts.redis.maxRetriesPerRequest = null; //Added because of: DEPRECATION WARNING! Your redis options maxRetriesPerRequest must be null. On the next versions having this settings will throw an exception
     this.prefix = `{${this.opts.namespace ?? this.opts.queueName}}`;
     this.redis =
-      this.opts.redisClusterEndpoints?.length > 0
+      this.opts.redisClusterEndpoints !== undefined && this.opts.redisClusterEndpoints.length > 0
         ? new Redis.Cluster(
             this.opts.redisClusterEndpoints,
             this.opts.redisCluster,
@@ -169,7 +169,7 @@ export class RedisStorage implements Storage {
     return {
       attempts: 0,
       data: { vaaBytes, parsedVaa },
-      id: job.id,
+      id: job.id!,
       name: job.name,
       log: job.log.bind(job),
       receivedAt: startTime,
@@ -218,7 +218,7 @@ export class RedisStorage implements Storage {
             sequence: parsedVaa.sequence.toString(),
           });
         } else {
-          this.logger.debug("Received job with no parsedVaa");
+          this.logger?.debug("Received job with no parsedVaa");
         }
 
         const vaaBytes = Buffer.from(job.data.vaaBytes, "base64");
@@ -228,7 +228,7 @@ export class RedisStorage implements Storage {
             vaaBytes,
             parsedVaa: parseVaa(vaaBytes),
           },
-          id: job.id,
+          id: job.id!,
           maxAttempts: this.opts.attempts,
           name: job.name,
           receivedAt: job.timestamp,
@@ -253,11 +253,11 @@ export class RedisStorage implements Storage {
 
   async stopWorker() {
     await this.worker?.close();
-    this.worker = null;
+    this.worker = undefined;
   }
 
   async spawnGaugeUpdateWorker(ms = 5000) {
-    while (this.worker !== null) {
+    while (this.worker !== undefined) {
       await this.updateGauges();
       await sleep(ms);
     }