diff --git a/.eslintrc.js b/.eslintrc.js
index aa83d7ce..d9378386 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -23,6 +23,8 @@ module.exports = {
   ],
   rules: {
     'prettier/prettier': 'warn',
+    '@typescript-eslint/no-unsafe-declaration-merging': 'off',
+    '@typescript-eslint/no-redundant-type-constituents': 'off',
     '@typescript-eslint/adjacent-overload-signatures': 'error',
     '@typescript-eslint/await-thenable': 'error',
     '@typescript-eslint/explicit-function-return-type': [
diff --git a/README.md b/README.md
index e20e8451..3f031a0e 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 [![commits since latest release][comm-image]][comm-url]
 
 Resumable upload middleware for [express](https://github.com/expressjs/express)
- and plain node.js.
+and plain node.js.
 Server-side part of [ngx-uploadx](https://github.com/kukhariev/ngx-uploadx)
 
 ## ✨ Features
diff --git a/packages/core/src/utils/cache.ts b/packages/core/src/utils/cache.ts
index 3d6d0a58..d0e0f734 100644
--- a/packages/core/src/utils/cache.ts
+++ b/packages/core/src/utils/cache.ts
@@ -9,7 +9,10 @@ export class Cache<T> {
    * @param maxEntries - The maximum number of entries before the cache starts flushing out the old items
    * @param maxAge - The maximum life of a cached items in seconds
    */
-  constructor(public maxEntries = 1000, readonly maxAge?: number) {
+  constructor(
+    public maxEntries = 1000,
+    readonly maxAge?: number
+  ) {
     this._ttl = maxAge ? maxAge * 1000 : 0;
   }
 
diff --git a/packages/core/src/utils/validator.ts b/packages/core/src/utils/validator.ts
index 9d3ce2ee..a0d9eccc 100644
--- a/packages/core/src/utils/validator.ts
+++ b/packages/core/src/utils/validator.ts
@@ -34,7 +34,7 @@ export class Validator<T> {
     }
   }
 
-  async verify(t: T): Promise<void | never> {
+  async verify(t: T): Promise<void> {
     for (const [code, validator] of Object.entries(this._validators)) {
       if (!(await validator.isValid(t))) {
         return Promise.reject({