diff --git a/modules/bitgo/test/v2/unit/coins/utxo/recovery/mock.ts b/modules/bitgo/test/v2/unit/coins/utxo/recovery/mock.ts
index 507b26fa8e..ccb7fe771e 100644
--- a/modules/bitgo/test/v2/unit/coins/utxo/recovery/mock.ts
+++ b/modules/bitgo/test/v2/unit/coins/utxo/recovery/mock.ts
@@ -10,8 +10,10 @@ import { Bsv } from '@bitgo/sdk-coin-bsv';
 
 type Unspent<TNumber extends number | bigint = number> = bitgo.Unspent<TNumber>;
 export class MockRecoveryProvider implements RecoveryProvider {
+  public unspents: Unspent<bigint>[];
   private prevTxCache: Record<string, string> = {};
-  constructor(public unspents: Unspent<bigint>[]) {
+  constructor(unspents: Unspent<bigint>[]) {
+    this.unspents = unspents;
     this.unspents.forEach((u) => {
       if (utxolib.bitgo.isUnspentWithPrevTx(u)) {
         const { txid } = bitgo.parseOutputId(u.id);
diff --git a/modules/bitgo/test/v2/unit/staking/stakingWalletNonTSS.ts b/modules/bitgo/test/v2/unit/staking/stakingWalletNonTSS.ts
index 72a5663560..44779f7f7d 100644
--- a/modules/bitgo/test/v2/unit/staking/stakingWalletNonTSS.ts
+++ b/modules/bitgo/test/v2/unit/staking/stakingWalletNonTSS.ts
@@ -242,7 +242,7 @@ describe('non-TSS Staking Wallet', function () {
         .reply(200, transaction);
 
       const prebuildTransaction = sandbox.stub(Wallet.prototype, 'prebuildTransaction');
-      const descriptor = sandbox.stub(StakingWallet.prototype, <any>'getDescriptorWallet');
+      const descriptor = sandbox.stub(StakingWallet.prototype, 'getDescriptorWallet' as any);
       await btcStakingWallet.build(transaction);
       prebuildTransaction.calledOnceWithExactly(transaction.buildParams).should.be.true;
       descriptor.notCalled.should.be.true;
diff --git a/modules/blockapis/test/UtxoApi.ts b/modules/blockapis/test/UtxoApi.ts
index fc3249728d..f00305f93e 100644
--- a/modules/blockapis/test/UtxoApi.ts
+++ b/modules/blockapis/test/UtxoApi.ts
@@ -43,12 +43,19 @@ type MethodArguments = unknown[];
  * A test case for a UtxoApi method.
  */
 class TestCase<T> {
+  public coinName: string;
+  public methodName: keyof UtxoApi;
+  public args: unknown[];
   /**
    * @param coinName - coin to test
    * @param methodName - method to test
    * @param args - method arguments
    */
-  constructor(public coinName: string, public methodName: keyof UtxoApi, public args: unknown[]) {}
+  constructor(coinName: string, methodName: keyof UtxoApi, args: unknown[]) {
+    this.coinName = coinName;
+    this.methodName = methodName;
+    this.args = args;
+  }
 
   /**
    * Call the method on the given API.
diff --git a/modules/sdk-coin-eos/test/unit/eos.ts b/modules/sdk-coin-eos/test/unit/eos.ts
index 0b2bd7525f..a72f611d8f 100644
--- a/modules/sdk-coin-eos/test/unit/eos.ts
+++ b/modules/sdk-coin-eos/test/unit/eos.ts
@@ -126,7 +126,7 @@ describe('EOS:', function () {
 
     // mock responses to the block chain
     const sandBox = sinon.createSandbox();
-    const callBack = sandBox.stub(Eos.prototype, <any>'getDataFromNode');
+    const callBack = sandBox.stub(Eos.prototype, 'getDataFromNode' as any);
     callBack
       .withArgs({
         endpoint: '/v1/chain/get_account',
@@ -380,7 +380,7 @@ describe('EOS:', function () {
     beforeEach(async () => {
       // mock responses to the block chain
       sandBox = sinon.createSandbox();
-      const callBack = sandBox.stub(Eos.prototype, <any>'getDataFromNode');
+      const callBack = sandBox.stub(Eos.prototype, 'getDataFromNode' as any);
       callBack
         .withArgs({
           endpoint: '/v1/chain/get_info',
diff --git a/modules/sdk-coin-sui/test/local_fullnode/RpcClient.ts b/modules/sdk-coin-sui/test/local_fullnode/RpcClient.ts
index f82a71cf17..f50b418e69 100644
--- a/modules/sdk-coin-sui/test/local_fullnode/RpcClient.ts
+++ b/modules/sdk-coin-sui/test/local_fullnode/RpcClient.ts
@@ -24,8 +24,11 @@ function unwrapResult<A>(method: string, v: { result: A } | { error: { code: num
 }
 
 export class RpcError extends Error {
-  constructor(public rpcError: { code: number; message: string }) {
+  public rpcError: { code: number; message: string };
+
+  constructor(rpcError: { code: number; message: string }) {
     super(`RPC error: ${rpcError.message} (code=${rpcError.code})`);
+    this.rpcError = rpcError;
   }
 
   static isRpcErrorWithCode(e: Error, code: number): boolean {
@@ -44,10 +47,13 @@ export type Coin = {
 
 /** Wrapper around https://docs.sui.io/sui-jsonrpc */
 export class RpcClient {
+  public url: string;
   // Running counter, increments every request
   id = 0;
 
-  constructor(public url: string) {}
+  constructor(url: string) {
+    this.url = url;
+  }
 
   static async createCheckedConnection(url: string): Promise<RpcClient> {
     const rpcClient = new RpcClient(url);
diff --git a/modules/sdk-coin-sui/test/local_fullnode/faucet.ts b/modules/sdk-coin-sui/test/local_fullnode/faucet.ts
index fa13c21c40..691d226fbf 100644
--- a/modules/sdk-coin-sui/test/local_fullnode/faucet.ts
+++ b/modules/sdk-coin-sui/test/local_fullnode/faucet.ts
@@ -1,7 +1,10 @@
 import axios from 'axios';
 
 export class Faucet {
-  constructor(public url: string) {}
+  public url: string;
+  constructor(url: string) {
+    this.url = url;
+  }
 
   async getCoins(address: string, amount: number): Promise<void> {
     await axios.post(this.url + '/gas', { FixedAmountRequest: { recipient: address } });
diff --git a/modules/unspents/test/signedTx/txGen.ts b/modules/unspents/test/signedTx/txGen.ts
index 5836105fff..ca0d30be9b 100644
--- a/modules/unspents/test/signedTx/txGen.ts
+++ b/modules/unspents/test/signedTx/txGen.ts
@@ -105,17 +105,29 @@ function signInput(
 }
 
 class TxCombo {
+  public walletKeys: BIP32Interface[];
+  public inputTypes: string[];
+  public outputTypes: TestUnspentType[];
+  public expectedDims: Readonly<Dimensions>;
+  public signKeys?: BIP32Interface[];
+  public inputValue: number;
   public unspents: IUnspent[];
   public inputTx: any;
 
   constructor(
-    public walletKeys: BIP32Interface[],
-    public inputTypes: string[],
-    public outputTypes: TestUnspentType[],
-    public expectedDims: Readonly<Dimensions> = Dimensions.ZERO,
-    public signKeys?: BIP32Interface[],
-    public inputValue: number = 10
+    walletKeys: BIP32Interface[],
+    inputTypes: string[],
+    outputTypes: TestUnspentType[],
+    expectedDims: Readonly<Dimensions> = Dimensions.ZERO,
+    signKeys?: BIP32Interface[],
+    inputValue = 10
   ) {
+    this.walletKeys = walletKeys;
+    this.inputTypes = inputTypes;
+    this.outputTypes = outputTypes;
+    this.expectedDims = expectedDims;
+    this.signKeys = signKeys;
+    this.inputValue = inputValue;
     this.unspents = inputTypes.map((inputType) =>
       createUnspent(
         walletKeys.map((key) => key.publicKey),
@@ -180,9 +192,12 @@ const runCombinations = (
 };
 
 class Histogram {
+  public map: Map<number, number>;
   public total = 0;
 
-  constructor(public map: Map<number, number> = new Map()) {}
+  constructor(map: Map<number, number> = new Map()) {
+    this.map = map;
+  }
 
   public add(size: number): void {
     this.map.set(size, (this.map.get(size) || 0) + 1);
diff --git a/modules/unspents/test/testutils.ts b/modules/unspents/test/testutils.ts
index d1afb03109..ee432b472a 100644
--- a/modules/unspents/test/testutils.ts
+++ b/modules/unspents/test/testutils.ts
@@ -31,7 +31,10 @@ export const UnspentTypePubKeyHash: {
 export type TestUnspentType = string | UnspentTypeOpReturn;
 
 export class UnspentTypeOpReturn {
-  constructor(public size: number) {}
+  public size: number;
+  constructor(size: number) {
+    this.size = size;
+  }
 
   public toString(): string {
     return `opReturn(${this.size})`;