diff --git a/.gitignore b/.gitignore
index 331a2b48..dfae509b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -128,3 +128,6 @@ dist
 .yarn/build-state.yml
 .yarn/install-state.gz
 .pnp.*
+
+# prettierrc for local editing
+.prettierrc
diff --git a/src/errors.ts b/src/errors.ts
index d70d71f4..af889c68 100644
--- a/src/errors.ts
+++ b/src/errors.ts
@@ -1,4 +1,4 @@
-import type { POJO } from '@matrixai/errors';
+import type { POJO } from './types.js';
 import type { ConnectionError, CryptoError } from './native/types.js';
 import { AbstractError } from '@matrixai/errors';
 
@@ -6,15 +6,15 @@ class ErrorQUIC<T> extends AbstractError<T> {
   static description = 'QUIC error';
 }
 
-class ErrorQUICUndefinedBehaviour<T> extends AbstractError<T> {
+class ErrorQUICUndefinedBehaviour<T> extends ErrorQUIC<T> {
   static description = 'You should never see this error';
 }
 
-class ErrorQUICHostInvalid<T> extends AbstractError<T> {
+class ErrorQUICHostInvalid<T> extends ErrorQUIC<T> {
   static description = 'Host provided was not valid';
 }
 
-class ErrorQUICPortInvalid<T> extends AbstractError<T> {
+class ErrorQUICPortInvalid<T> extends ErrorQUIC<T> {
   static description = 'Port provided was not valid';
 }
 
diff --git a/src/types.ts b/src/types.ts
index aad435e0..d469193d 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,6 +1,8 @@
 import type QUICStream from './QUICStream.js';
 import type { CryptoError } from './native/types.js';
 
+type POJO = { [key: string]: any };
+
 /**
  * Opaque types are wrappers of existing types
  * that require smart constructors
@@ -350,6 +352,7 @@ type StreamCodeToReason = (type: 'read' | 'write', code: number) => any;
 type QUICStreamMap = Map<StreamId, QUICStream>;
 
 export type {
+  POJO,
   Opaque,
   Class,
   Callback,