diff --git a/src/call.ts b/src/call.ts
index f2f4c7f..553f7c6 100644
--- a/src/call.ts
+++ b/src/call.ts
@@ -1,12 +1,12 @@
 import type { JsonFragment, JsonFragmentType, Provider } from 'ethers';
 import { Contract, Result, concat } from 'ethers';
 
-import deploylessMulticallAbi from './abi/deploylessMulticall.json' assert { type: 'json' };
-import deploylessMulticall2Abi from './abi/deploylessMulticall2.json' assert { type: 'json' };
-import deploylessMulticall3Abi from './abi/deploylessMulticall3.json' assert { type: 'json' };
-import multicallAbi from './abi/multicall.json' assert { type: 'json' };
-import multicall2Abi from './abi/multicall2.json' assert { type: 'json' };
-import multicall3Abi from './abi/multicall3.json' assert { type: 'json' };
+import deploylessMulticallAbi from './abi/deploylessMulticall.json';
+import deploylessMulticall2Abi from './abi/deploylessMulticall2.json';
+import deploylessMulticall3Abi from './abi/deploylessMulticall3.json';
+import multicallAbi from './abi/multicall.json';
+import multicall2Abi from './abi/multicall2.json';
+import multicall3Abi from './abi/multicall3.json';
 import type { Params } from './abi.js';
 import Abi from './abi.js';
 import type { Multicall } from './multicall.js';
@@ -83,7 +83,7 @@ async function tryAll<T>(
   multicall2: Multicall | null,
   calls: Call[],
   overrides?: CallOverrides,
-): Promise<(T | null)[]> {
+): Promise<Array<T | null>> {
   const contract = multicall2
     ? new Contract(multicall2.address, multicall2Abi, provider)
     : null;
@@ -124,7 +124,7 @@ async function tryEach<T>(
   multicall3: Multicall | null,
   calls: FailableCall[],
   overrides?: CallOverrides,
-): Promise<(T | null)[]> {
+): Promise<Array<T | null>> {
   const contract = multicall3
     ? new Contract(multicall3.address, multicall3Abi, provider)
     : null;
diff --git a/src/calls.ts b/src/calls.ts
index 222d27d..178517d 100644
--- a/src/calls.ts
+++ b/src/calls.ts
@@ -1,4 +1,4 @@
-import multicallAbi from './abi/multicall.json' assert { type: 'json' };
+import multicallAbi from './abi/multicall.json';
 import type { Call } from './call.js';
 import Contract from './contract.js';
 
diff --git a/src/contract.ts b/src/contract.ts
index a16f52f..e0169d7 100644
--- a/src/contract.ts
+++ b/src/contract.ts
@@ -11,8 +11,8 @@ import type { Call } from './call.js';
  * daiContract.balanceOf(address); // returns a Call object
  */
 class Contract {
-  #address: string;
-  #functions: JsonFragment[];
+  address: string;
+  functions: JsonFragment[];
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   [key: string]: Call | any;
 
@@ -22,11 +22,11 @@ class Contract {
    * @param abi ABI of the contract
    */
   constructor(address: string, abi: JsonFragment[]) {
-    this.#address = address;
+    this.address = address;
 
-    this.#functions = abi.filter((x) => x.type === 'function');
-    const callFunctions = this.#functions.filter(
-      (x) => x.stateMutability === 'pure' || x.stateMutability === 'view',
+    this.functions = abi.filter((x) => x.type === 'function');
+    const callFunctions = this.functions.filter(
+      (f) => f.stateMutability === 'pure' || f.stateMutability === 'view',
     );
 
     for (const callFunction of callFunctions) {
@@ -34,7 +34,7 @@ class Contract {
       if (!name) {
         continue;
       }
-      const getCall = this.#makeCallFunction(name);
+      const getCall = this.makeCallFunction(name);
       if (!this[name]) {
         Object.defineProperty(this, name, {
           enumerable: true,
@@ -45,10 +45,10 @@ class Contract {
     }
   }
 
-  #makeCallFunction(name: string) {
+  makeCallFunction(name: string) {
     return (...params: Params): Call => {
-      const address = this.#address;
-      const func = this.#functions.find((f) => f.name === name);
+      const address = this.address;
+      const func = this.functions.find((f) => f.name === name);
       const inputs = func?.inputs || [];
       const outputs = func?.outputs || [];
       return {
diff --git a/src/provider.ts b/src/provider.ts
index a386127..2e922b0 100644
--- a/src/provider.ts
+++ b/src/provider.ts
@@ -22,11 +22,11 @@ interface ProviderConfig {
  * Represents a Multicall provider. Used to execute multiple Calls.
  */
 class Provider {
-  #provider?: EthersProvider;
-  #config: Partial<ProviderConfig>;
-  #multicall: Multicall | null;
-  #multicall2: Multicall | null;
-  #multicall3: Multicall | null;
+  provider?: EthersProvider;
+  config: Partial<ProviderConfig>;
+  multicall: Multicall | null;
+  multicall2: Multicall | null;
+  multicall3: Multicall | null;
 
   /**
    * Create a provider.
@@ -39,11 +39,11 @@ class Provider {
     provider: EthersProvider,
     config?: Partial<ProviderConfig>,
   ) {
-    this.#provider = provider;
-    this.#config = config || {};
-    this.#multicall = this.#getMulticall(chainId, 1);
-    this.#multicall2 = this.#getMulticall(chainId, 2);
-    this.#multicall3 = this.#getMulticall(chainId, 3);
+    this.provider = provider;
+    this.config = config || {};
+    this.multicall = this.getMulticall(chainId, 1);
+    this.multicall2 = this.getMulticall(chainId, 2);
+    this.multicall3 = this.getMulticall(chainId, 3);
   }
 
   /**
@@ -52,10 +52,10 @@ class Provider {
    * @returns Ether balance fetching call
    */
   getEthBalance(address: string): Call {
-    const multicall = this.#multicall3 || this.#multicall2 || this.#multicall;
-    if (!multicall) {
+    const multicall = this.multicall3 || this.multicall2 || this.multicall;
+    if (!multicall)
       throw Error('Multicall contract is not available on this network.');
-    }
+
     return getEthBalance(address, multicall.address);
   }
 
@@ -68,11 +68,11 @@ class Provider {
    * @returns List of fetched data
    */
   async all<T>(calls: Call[], overrides?: CallOverrides): Promise<T[]> {
-    if (!this.#provider) {
+    if (!this.provider)
       throw Error('Provider should be initialized before use.');
-    }
-    const multicall = this.#getContract('BASIC', overrides?.blockTag);
-    const provider = this.#provider;
+
+    const multicall = this.getContract('BASIC', overrides?.blockTag);
+    const provider = this.provider;
     return await callAll<T>(provider, multicall, calls, overrides);
   }
 
@@ -87,11 +87,11 @@ class Provider {
     calls: Call[],
     overrides?: CallOverrides,
   ): Promise<(T | null)[]> {
-    if (!this.#provider) {
+    if (!this.provider)
       throw Error('Provider should be initialized before use.');
-    }
-    const multicall = this.#getContract('TRY_ALL', overrides?.blockTag);
-    const provider = this.#provider;
+
+    const multicall = this.getContract('TRY_ALL', overrides?.blockTag);
+    const provider = this.provider;
     return await callTryAll<T>(provider, multicall, calls, overrides);
   }
 
@@ -109,11 +109,11 @@ class Provider {
     canFail: boolean[],
     overrides?: CallOverrides,
   ): Promise<(T | null)[]> {
-    if (!this.#provider) {
+    if (!this.provider)
       throw Error('Provider should be initialized before use.');
-    }
-    const multicall = this.#getContract('TRY_EACH', overrides?.blockTag);
-    const provider = this.#provider;
+
+    const multicall = this.getContract('TRY_EACH', overrides?.blockTag);
+    const provider = this.provider;
     const failableCalls = calls.map((call, index) => {
       return {
         ...call,
@@ -123,15 +123,15 @@ class Provider {
     return await callTryEach<T>(provider, multicall, failableCalls, overrides);
   }
 
-  #getContract(call: CallType, block?: BlockTag): Multicall | null {
-    const multicall = this.#isAvailable(this.#multicall, block)
-      ? this.#multicall
+  getContract(call: CallType, block?: BlockTag): Multicall | null {
+    const multicall = this.isAvailable(this.multicall, block)
+      ? this.multicall
       : null;
-    const multicall2 = this.#isAvailable(this.#multicall2, block)
-      ? this.#multicall2
+    const multicall2 = this.isAvailable(this.multicall2, block)
+      ? this.multicall2
       : null;
-    const multicall3 = this.#isAvailable(this.#multicall3, block)
-      ? this.#multicall3
+    const multicall3 = this.isAvailable(this.multicall3, block)
+      ? this.multicall3
       : null;
     switch (call) {
       case 'BASIC':
@@ -143,7 +143,7 @@ class Provider {
     }
   }
 
-  #isAvailable(multicall: Multicall | null, block?: BlockTag): boolean {
+  isAvailable(multicall: Multicall | null, block?: BlockTag): boolean {
     if (!multicall) {
       return false;
     }
@@ -156,7 +156,7 @@ class Provider {
     return multicall.block < block;
   }
 
-  #getMulticall(chainId: number, version: 1 | 2 | 3): Multicall | null {
+  getMulticall(chainId: number, version: 1 | 2 | 3): Multicall | null {
     function getRegistryMulticall(
       chainId: number,
       version: 1 | 2 | 3,
@@ -171,14 +171,12 @@ class Provider {
       }
     }
 
-    const customMulticall = this.#config?.multicall;
-    if (!customMulticall) {
-      return getRegistryMulticall(chainId, version);
-    }
+    const customMulticall = this.config?.multicall;
+    if (!customMulticall) return getRegistryMulticall(chainId, version);
+
     const address = customMulticall.address;
-    if (!address) {
-      return getRegistryMulticall(chainId, version);
-    }
+    if (!address) return getRegistryMulticall(chainId, version);
+
     return {
       address,
       block: customMulticall.block || 0,
diff --git a/test/contract.test.ts b/test/contract.test.ts
index 34090e4..49c78a6 100644
--- a/test/contract.test.ts
+++ b/test/contract.test.ts
@@ -1,6 +1,7 @@
 import { describe, test, expect } from 'vitest';
 
-import { Call, Contract } from '../src';
+import { Contract } from '../src';
+import type { Call } from '../src';
 
 import erc20Abi from './abi/erc20.json';
 
diff --git a/tsconfig.json b/tsconfig.json
index 5aa0a73..c79f757 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,8 +1,8 @@
 {
   "compilerOptions": {
     "target": "ES2022",
-    "module": "NodeNext",
-    "moduleResolution": "NodeNext",
+    "module": "ES2022",
+    "moduleResolution": "Node",
 
     "allowSyntheticDefaultImports": true,
     "declaration": true,