fix: lint issues

src/index.ts

@@ -1 +1 @@
-export * from './public-api';
+export * from './public-api'

src/parallel/default.ts

@@ -1,4 +1,5 @@
-import { IExecutionOptions } from '../models/execution-options.model'
+/* eslint-disable @typescript-eslint/no-empty-function */
+import type { IExecutionOptions } from '../models/execution-options.model'
 
 export const DEFAULT_EXECUTION_OPTIONS: Required<Omit<IExecutionOptions, 'payload' | 'handler'>> = {
     concurrency: 1,

src/parallel/parallel.service.spec.ts

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/ban-ts-comment */
 import { Subject, debounceTime, finalize, skip, take, tap } from 'rxjs'
 import { Parallel } from './parallel.service'
 
@@ -73,11 +74,11 @@ describe('Parallel', () => {
             const failFn = jest.fn()
             const payload = Array.from({ length: 1000 }, (_, i) => i)
             const length = payload.length
-            const concurrency: number = 100
+            const concurrency = 100
 
             const checker$ = new Subject()
             const expectedChunksTriggered = length / concurrency
-            let chunksTriggered: number = 0
+            let chunksTriggered = 0
 
             checker$
                 .asObservable()
@@ -119,7 +120,7 @@ describe('Parallel', () => {
             const payload = [0, 1, 2, 3]
             const length = payload.length
 
-            // @ts-ignore
+            // @ts-expect-error
             const { callsPipe, execution$ } = Parallel._createExecution<number, void>(
                 payload,
                 async (p) => {
@@ -156,7 +157,7 @@ describe('Parallel', () => {
             const payload = [0, 1, 2, 3]
             const length = payload.length
 
-            // @ts-ignore
+            // @ts-expect-error
             const { callsPipe, execution$ } = Parallel._createExecution<number, void>(
                 payload,
                 async (p) => {

src/parallel/parallel.service.ts

@@ -1,6 +1,6 @@
 import { merge } from 'lodash'
 import { Subject, Subscription, filter, finalize, skip, switchMap, take, tap } from 'rxjs'
-import { IExecutionOptions, ProcessDirection } from '../models/execution-options.model'
+import type { IExecutionOptions, ProcessDirection } from '../models/execution-options.model'
 import { DEFAULT_EXECUTION_OPTIONS } from './default'
 
 export class Parallel {
@@ -10,7 +10,7 @@ export class Parallel {
      */
     public static execute<T = unknown, K = unknown>(options: IExecutionOptions<T, K>): Subscription {
         const { onDone, onItemDone, onItemFail, handler, payload, processDirection, concurrency } = merge<
-            {},
+            object,
             Required<Omit<IExecutionOptions, 'payload' | 'handler'>>,
             IExecutionOptions<T, K>
         >({}, DEFAULT_EXECUTION_OPTIONS, options)
@@ -34,6 +34,7 @@ export class Parallel {
             )
             .subscribe()
 
+        // eslint-disable-next-line @typescript-eslint/no-unused-vars
         const pipes: Subject<T>[] = firstItems.map((item) => {
             const { execution$, callsPipe } = this._createExecution<T, K>(
                 payload,