diff --git a/README.md b/README.md
index 41aec98..3888ace 100644
--- a/README.md
+++ b/README.md
@@ -502,16 +502,16 @@ import type { DebugOptions } from 'vitest-when'
 #### `DebugResult`
 
 ```ts
-import type { DebugResult, DebugStubbing, DebugBehavior } from 'vitest-when'
+import type { DebugResult, Stubbing, Behavior } from 'vitest-when'
 ```
 
 | fields                       | type                                         | description                                                 |
 | ---------------------------- | -------------------------------------------- | ----------------------------------------------------------- |
 | `description`                | `string`                                     | A human-readable description of the stub, logged by default |
 | `name`                       | `string`                                     | The name of the mock, if set by [`mockName`][mockName]      |
-| `stubbings`                  | `DebugStubbing[]`                            | The list of configured stub behaviors                       |
+| `stubbings`                  | `Stubbing[]`                                 | The list of configured stub behaviors                       |
 | `stubbings[].args`           | `unknown[]`                                  | The stubbing's arguments to match                           |
-| `stubbings[].behavior`       | `DebugBehavior`                              | The configured behavior of the stubbing                     |
+| `stubbings[].behavior`       | `Behavior`                                   | The configured behavior of the stubbing                     |
 | `stubbings[].behavior.type`  | `return`, `throw`, `resolve`, `reject`, `do` | Result type of the stubbing                                 |
 | `stubbings[].behavior.value` | `unknown`                                    | Value for the behavior, if `type` is `return` or `resolve`  |
 | `stubbings[].behavior.error` | `unknown`                                    | Error for the behavior, it `type` is `throw` or `reject`    |
diff --git a/src/behaviors.ts b/src/behaviors.ts
index 10fb77a..96cf7df 100644
--- a/src/behaviors.ts
+++ b/src/behaviors.ts
@@ -33,12 +33,20 @@ export interface BehaviorEntry<TArgs extends unknown[]> {
   maxCallCount?: number | undefined
 }
 
+export const BehaviorType = {
+  RETURN: 'return',
+  RESOLVE: 'resolve',
+  THROW: 'throw',
+  REJECT: 'reject',
+  DO: 'do',
+} as const
+
 export type Behavior =
-  | { type: 'return'; value: unknown }
-  | { type: 'resolve'; value: unknown }
-  | { type: 'throw'; error: unknown }
-  | { type: 'reject'; error: unknown }
-  | { type: 'do'; callback: AnyFunction }
+  | { type: typeof BehaviorType.RETURN; value: unknown }
+  | { type: typeof BehaviorType.RESOLVE; value: unknown }
+  | { type: typeof BehaviorType.THROW; error: unknown }
+  | { type: typeof BehaviorType.REJECT; error: unknown }
+  | { type: typeof BehaviorType.DO; callback: AnyFunction }
 
 export interface BehaviorOptions<TValue> {
   value: TValue
@@ -77,7 +85,7 @@ export const createBehaviorStack = <
             ({ value, maxCallCount }) => ({
               args,
               maxCallCount,
-              behavior: { type: 'return' as const, value },
+              behavior: { type: BehaviorType.RETURN, value },
               calls: [],
             }),
           ),
@@ -89,7 +97,7 @@ export const createBehaviorStack = <
             ({ value, maxCallCount }) => ({
               args,
               maxCallCount,
-              behavior: { type: 'resolve' as const, value },
+              behavior: { type: BehaviorType.RESOLVE, value },
               calls: [],
             }),
           ),
@@ -101,7 +109,7 @@ export const createBehaviorStack = <
             ({ value, maxCallCount }) => ({
               args,
               maxCallCount,
-              behavior: { type: 'throw' as const, error: value },
+              behavior: { type: BehaviorType.THROW, error: value },
               calls: [],
             }),
           ),
@@ -113,7 +121,7 @@ export const createBehaviorStack = <
             ({ value, maxCallCount }) => ({
               args,
               maxCallCount,
-              behavior: { type: 'reject' as const, error: value },
+              behavior: { type: BehaviorType.REJECT, error: value },
               calls: [],
             }),
           ),
@@ -125,7 +133,7 @@ export const createBehaviorStack = <
             ({ value, maxCallCount }) => ({
               args,
               maxCallCount,
-              behavior: { type: 'do' as const, callback: value },
+              behavior: { type: BehaviorType.DO, callback: value },
               calls: [],
             }),
           ),
diff --git a/src/debug.ts b/src/debug.ts
index 1b25815..1d1fb60 100644
--- a/src/debug.ts
+++ b/src/debug.ts
@@ -5,7 +5,7 @@ import {
 
 import { validateSpy, getBehaviorStack } from './stubs'
 import type { AnyFunction } from './types'
-import type { Behavior } from './behaviors'
+import { type Behavior, BehaviorType } from './behaviors'
 
 export interface DebugResult {
   name: string
@@ -71,23 +71,23 @@ const formatCall = (args: readonly unknown[]): string => {
 
 const formatBehavior = (behavior: Behavior): string => {
   switch (behavior.type) {
-    case 'return': {
+    case BehaviorType.RETURN: {
       return `=> ${stringify(behavior.value)}`
     }
 
-    case 'resolve': {
+    case BehaviorType.RESOLVE: {
       return `=> Promise.resolve(${stringify(behavior.value)})`
     }
 
-    case 'throw': {
+    case BehaviorType.THROW: {
       return `=> { throw ${stringify(behavior.error)} }`
     }
 
-    case 'reject': {
+    case BehaviorType.REJECT: {
       return `=> Promise.reject(${stringify(behavior.error)})`
     }
 
-    case 'do': {
+    case BehaviorType.DO: {
       return `=> ${stringify(behavior.callback)}()`
     }
   }
diff --git a/src/stubs.ts b/src/stubs.ts
index 750f748..05adad0 100644
--- a/src/stubs.ts
+++ b/src/stubs.ts
@@ -1,5 +1,9 @@
 import { type Mock as Spy } from 'vitest'
-import { createBehaviorStack, type BehaviorStack } from './behaviors.ts'
+import {
+  createBehaviorStack,
+  type BehaviorStack,
+  BehaviorType,
+} from './behaviors.ts'
 import { NotAMockFunctionError } from './errors.ts'
 import type { AnyFunction } from './types.ts'
 
@@ -24,28 +28,28 @@ export const configureStub = <TFunc extends AnyFunction>(
 
   const implementation = (...args: Parameters<TFunc>): unknown => {
     const behavior = behaviors.use(args)?.behavior ?? {
-      type: 'return',
+      type: BehaviorType.RETURN,
       value: undefined,
     }
 
     switch (behavior.type) {
-      case 'return': {
+      case BehaviorType.RETURN: {
         return behavior.value
       }
 
-      case 'resolve': {
+      case BehaviorType.RESOLVE: {
         return Promise.resolve(behavior.value)
       }
 
-      case 'throw': {
+      case BehaviorType.THROW: {
         throw behavior.error
       }
 
-      case 'reject': {
+      case BehaviorType.REJECT: {
         return Promise.reject(behavior.error)
       }
 
-      case 'do': {
+      case BehaviorType.DO: {
         return behavior.callback(...args)
       }
     }
diff --git a/src/vitest-when.ts b/src/vitest-when.ts
index f562254..f582e7f 100644
--- a/src/vitest-when.ts
+++ b/src/vitest-when.ts
@@ -3,7 +3,8 @@ import type { WhenOptions } from './behaviors.ts'
 import type { AnyFunction } from './types.ts'
 import { getDebug, type DebugResult } from './debug.ts'
 
-export type { WhenOptions } from './behaviors.ts'
+export { type WhenOptions, type Behavior, BehaviorType } from './behaviors.ts'
+export type { DebugResult, Stubbing } from './debug.ts'
 export * from './errors.ts'
 
 export interface StubWrapper<TFunc extends AnyFunction> {
@@ -49,9 +50,10 @@ export const debug = <TFunc extends AnyFunction>(
   spy: TFunc,
   options: DebugOptions = {},
 ): DebugResult => {
+  const log = options.log ?? true
   const result = getDebug(spy)
 
-  if (options.log !== false) {
+  if (log) {
     console.debug(result.description)
   }