diff --git a/README.md b/README.md
index d554c16..54c4c61 100644
--- a/README.md
+++ b/README.md
@@ -31,52 +31,6 @@ npm install obug
 
 Please refer to the original [debug](https://github.com/debug-js/debug#usage) package for usage instructions.
 
-## Refactor Plan
-
-The obug package is currently a direct fork of the debug package with minimal modifications. The following refactor plan outlines the intended changes to be made in future releases.
-
-```ts
-import { createDebug, disable, enable, enabled, namespaces } from 'obug'
-
-// Get the currently enabled namespaces
-console.log(namespaces())
-
-// createDebug has no extra properties or methods.
-const debug = createDebug('my-namespace', {
-  // All options are optional
-
-  useColors: true, // false, true, 'auto'
-  color: 2, // custom color
-  // custom formatArgs
-  formatArgs(args) {},
-  formatters: {},
-  // Node.js only
-  inspectOpts: {},
-
-  // custom log
-  log: console.log,
-})
-
-debug('This is a debug message')
-console.log(
-  debug.namespace, // 'my-namespace'
-  debug.enabled, // Check if enabled
-  debug.useColors, // true
-  debug.color, // 2
-  debug.formatArgs, // custom formatArgs
-  debug.formatters, // {}
-  debug.inspectOpts, // {}
-  debug.log, // implemented log function
-)
-
-// Create a sub-namespace, and it will inherit options from the parent debugger
-const sub = debug.extend('sub-namespace')
-sub('This is a sub-namespace debug message')
-console.log(sub.namespace) // 'my-namespace:sub-namespace'
-```
-
-For more details, please refer to the [src/types-v2.ts](./src/types-v2.ts).
-
 ## Original Authors
 
 As obug is a fork of debug, we would like to acknowledge the original authors:
diff --git a/src/types-v2.ts b/src/types-v2.ts
deleted file mode 100644
index 24974bc..0000000
--- a/src/types-v2.ts
+++ /dev/null
@@ -1,48 +0,0 @@
-import type { InspectOptions as NodeInspectOptions } from 'node:util'
-
-/**
- * Disable debug output.
- */
-export declare function disable(): string
-/**
- * Enables a debug mode by namespaces. This can include modes
- * separated by a colon and wildcards.
- */
-export declare function enable(namespaces: string): void
-/**
- * Returns true if the given mode name is enabled, false otherwise.
- */
-export declare function enabled(namespaces: string): boolean
-/**
- * Returns an array of the currently enabled debug namespaces.
- */
-export declare function namespaces(): string[]
-
-export interface InspectOptions extends NodeInspectOptions {
-  hideDate?: boolean
-}
-
-export interface Formatters {
-  [formatter: string]: (this: Debugger, v: any) => string
-}
-
-export interface Debugger extends Required<DebugOptions> {
-  (formatter: any, ...args: any[]): void
-
-  namespace: string
-  enabled: boolean
-
-  extend: (namespace: string, delimiter?: string) => Debugger
-}
-
-export interface DebugOptions {
-  useColors?: boolean
-  color?: string | number
-
-  formatArgs?: (this: Debugger, diff: number, args: [string, ...any[]]) => void
-  formatters?: Formatters
-  /** Node.js only */
-  inspectOpts?: InspectOptions
-
-  log?: (this: Debugger, ...args: any[]) => void
-}