diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsole.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsole.kt
index 317efebcd..8bed464da 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsole.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/MiraiConsole.kt
@@ -18,9 +18,9 @@ import kotlinx.coroutines.Job
 import net.mamoe.mirai.Bot
 import net.mamoe.mirai.console.MiraiConsole.INSTANCE
 import net.mamoe.mirai.console.MiraiConsoleImplementation.Companion.start
-import net.mamoe.mirai.console.extension.GlobalComponentStorage
 import net.mamoe.mirai.console.extensions.BotConfigurationAlterer
 import net.mamoe.mirai.console.internal.MiraiConsoleImplementationBridge
+import net.mamoe.mirai.console.internal.extension.GlobalComponentStorage
 import net.mamoe.mirai.console.plugin.PluginManager
 import net.mamoe.mirai.console.plugin.center.PluginCenter
 import net.mamoe.mirai.console.plugin.jvm.JvmPluginLoader
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/ComponentStorage.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/ComponentStorage.kt
index b5b286848..62b7b47c2 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/ComponentStorage.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/ComponentStorage.kt
@@ -9,17 +9,9 @@
 
 package net.mamoe.mirai.console.extension
 
-import net.mamoe.mirai.console.extensions.SingletonExtensionSelector
-import net.mamoe.mirai.console.extensions.SingletonExtensionSelector.ExtensionPoint.selectSingleton
-import net.mamoe.mirai.console.internal.data.kClassQualifiedNameOrTip
 import net.mamoe.mirai.console.plugin.Plugin
 import net.mamoe.mirai.console.plugin.jvm.JvmPlugin
 import net.mamoe.mirai.console.plugin.jvm.JvmPlugin.Companion.onLoad
-import net.mamoe.mirai.console.plugin.name
-import java.util.concurrent.ConcurrentHashMap
-import java.util.concurrent.CopyOnWriteArraySet
-import kotlin.contracts.contract
-import kotlin.reflect.KClass
 
 /**
  * 组件容器, 容纳 [Plugin] 注册的 [Extension].
@@ -41,146 +33,3 @@ public interface ComponentStorage {
     )
 }
 
-internal object GlobalComponentStorage : AbstractConcurrentComponentStorage()
-
-internal interface ExtensionRegistry<out E : Extension> {
-    val plugin: Plugin
-    val extension: E
-
-    operator fun component1(): Plugin {
-        return this.plugin
-    }
-
-    operator fun component2(): E {
-        return this.extension
-    }
-}
-
-internal class LazyExtensionRegistry<out E : Extension>(
-    override val plugin: Plugin,
-    initializer: () -> E,
-) : ExtensionRegistry<E> {
-    override val extension: E by lazy { initializer() }
-}
-
-internal data class DataExtensionRegistry<out E : Extension>(
-    override val plugin: Plugin,
-    override val extension: E,
-) : ExtensionRegistry<E>
-
-internal abstract class AbstractConcurrentComponentStorage : ComponentStorage {
-    @Suppress("UNCHECKED_CAST")
-    internal fun <T : Extension> ExtensionPoint<out T>.getExtensions(): Set<ExtensionRegistry<T>> {
-        return instances.getOrPut(this, ::CopyOnWriteArraySet) as Set<ExtensionRegistry<T>>
-    }
-
-    internal fun mergeWith(another: AbstractConcurrentComponentStorage) {
-        for ((ep, list) in another.instances) {
-            for (extensionRegistry in list) {
-                @Suppress("UNCHECKED_CAST")
-                ep as ExtensionPoint<Extension>
-                this.contribute(ep, extensionRegistry.plugin, lazyInstance = { extensionRegistry.extension })
-            }
-        }
-    }
-
-    internal inline fun <T : Extension> ExtensionPoint<out T>.withExtensions(block: T.() -> Unit) {
-        return withExtensions { _ -> block() }
-    }
-
-    @Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")
-    @kotlin.internal.LowPriorityInOverloadResolution
-    internal inline fun <T : Extension> ExtensionPoint<out T>.withExtensions(block: T.(plugin: Plugin) -> Unit) {
-        contract {
-            callsInPlace(block)
-        }
-        for ((plugin, extension) in this.getExtensions()) {
-            kotlin.runCatching {
-                block.invoke(extension, plugin)
-            }.getOrElse { throwable ->
-                throwExtensionException(extension, plugin, throwable)
-            }
-        }
-    }
-
-    internal inline fun <reified E : SingletonExtension<*>> ExtensionPoint<out E>.findSingleton(builtin: E): E =
-        findSingleton(E::class, builtin)
-
-    internal fun <E : SingletonExtension<*>> ExtensionPoint<out E>.findSingleton(type: KClass<E>, builtin: E): E {
-        val candidates = this.getExtensions()
-        return when (candidates.size) {
-            0 -> builtin
-            1 -> candidates.single().extension
-            else -> SingletonExtensionSelector.instance.selectSingleton(type, candidates) ?: builtin
-        }
-    }
-
-    internal inline fun <reified E : SingletonExtension<T>, T> ExtensionPoint<out E>.findSingletonInstance(builtin: T): T =
-        findSingletonInstance(E::class, builtin)
-
-    internal fun <E : SingletonExtension<T>, T> ExtensionPoint<out E>.findSingletonInstance(
-        type: KClass<E>,
-        builtin: T,
-    ): T {
-        val candidates = this.getExtensions()
-        return when (candidates.size) {
-            0 -> builtin
-            1 -> candidates.single().extension.instance
-            else -> SingletonExtensionSelector.instance.selectSingleton(type, candidates)?.instance ?: builtin
-        }
-    }
-
-    internal inline fun <T : Extension, E> ExtensionPoint<out T>.foldExtensions(
-        initial: E,
-        block: (acc: E, extension: T) -> E,
-    ): E {
-        contract {
-            callsInPlace(block)
-        }
-        var e: E = initial
-        for ((plugin, extension) in this.getExtensions()) {
-            kotlin.runCatching {
-                e = block.invoke(e, extension)
-            }.getOrElse { throwable ->
-                throwExtensionException(extension, plugin, throwable)
-            }
-        }
-        return e
-    }
-
-    internal fun <T : Extension> ExtensionPoint<out T>.throwExtensionException(
-        extension: T,
-        plugin: Plugin,
-        throwable: Throwable,
-    ) {
-        throw ExtensionException(
-            "Exception while executing extension '${extension.kClassQualifiedNameOrTip}' provided by plugin '${plugin.name}', registered for '${this.extensionType.qualifiedName}'",
-            throwable
-        )
-    }
-
-    internal inline fun <T : Extension> ExtensionPoint<T>.useExtensions(block: (extension: T) -> Unit): Unit =
-        withExtensions(block)
-
-    @Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")
-    @kotlin.internal.LowPriorityInOverloadResolution
-    internal inline fun <T : Extension> ExtensionPoint<T>.useExtensions(block: (extension: T, plugin: Plugin) -> Unit): Unit =
-        withExtensions(block)
-
-    val instances: MutableMap<ExtensionPoint<*>, MutableSet<ExtensionRegistry<*>>> = ConcurrentHashMap()
-    override fun <T : Extension> contribute(
-        extensionPoint: ExtensionPoint<T>,
-        plugin: Plugin,
-        extensionInstance: T,
-    ) {
-        instances.getOrPut(extensionPoint, ::CopyOnWriteArraySet).add(DataExtensionRegistry(plugin, extensionInstance))
-    }
-
-    override fun <T : Extension> contribute(
-        extensionPoint: ExtensionPoint<T>,
-        plugin: Plugin,
-        lazyInstance: () -> T,
-    ) {
-        instances.getOrPut(extensionPoint, ::CopyOnWriteArraySet).add(LazyExtensionRegistry(plugin, lazyInstance))
-    }
-}
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/PluginComponentStorage.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/PluginComponentStorage.kt
index 32a51a6aa..2a6a8a63f 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/PluginComponentStorage.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extension/PluginComponentStorage.kt
@@ -10,6 +10,7 @@
 package net.mamoe.mirai.console.extension
 
 import net.mamoe.mirai.console.extensions.*
+import net.mamoe.mirai.console.internal.extension.AbstractConcurrentComponentStorage
 import net.mamoe.mirai.console.permission.PermissionService
 import net.mamoe.mirai.console.plugin.Plugin
 import net.mamoe.mirai.console.plugin.loader.PluginLoader
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extensions/SingletonExtensionSelector.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extensions/SingletonExtensionSelector.kt
index 60c2a4ce8..e5fd07fb8 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extensions/SingletonExtensionSelector.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/extensions/SingletonExtensionSelector.kt
@@ -10,8 +10,13 @@
 package net.mamoe.mirai.console.extensions
 
 import net.mamoe.mirai.console.MiraiConsole
-import net.mamoe.mirai.console.extension.*
-import net.mamoe.mirai.console.internal.extensions.BuiltInSingletonExtensionSelector
+import net.mamoe.mirai.console.extension.AbstractExtensionPoint
+import net.mamoe.mirai.console.extension.Extension
+import net.mamoe.mirai.console.extension.FunctionExtension
+import net.mamoe.mirai.console.extension.SingletonExtension
+import net.mamoe.mirai.console.internal.extension.BuiltInSingletonExtensionSelector
+import net.mamoe.mirai.console.internal.extension.ExtensionRegistry
+import net.mamoe.mirai.console.internal.extension.GlobalComponentStorage
 import net.mamoe.mirai.console.plugin.Plugin
 import net.mamoe.mirai.console.plugin.name
 import net.mamoe.mirai.utils.info
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt
index d063c1059..2bbad7896 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/MiraiConsoleImplementationBridge.kt
@@ -27,7 +27,6 @@ import net.mamoe.mirai.console.command.Command.Companion.primaryName
 import net.mamoe.mirai.console.command.CommandManager
 import net.mamoe.mirai.console.command.ConsoleCommandSender
 import net.mamoe.mirai.console.data.PluginDataStorage
-import net.mamoe.mirai.console.extension.GlobalComponentStorage
 import net.mamoe.mirai.console.extensions.PermissionServiceProvider
 import net.mamoe.mirai.console.extensions.PostStartupExtension
 import net.mamoe.mirai.console.extensions.SingletonExtensionSelector
@@ -35,7 +34,8 @@ import net.mamoe.mirai.console.internal.command.CommandManagerImpl
 import net.mamoe.mirai.console.internal.data.builtins.AutoLoginConfig
 import net.mamoe.mirai.console.internal.data.builtins.ConsoleDataScope
 import net.mamoe.mirai.console.internal.data.castOrNull
-import net.mamoe.mirai.console.internal.extensions.BuiltInSingletonExtensionSelector
+import net.mamoe.mirai.console.internal.extension.BuiltInSingletonExtensionSelector
+import net.mamoe.mirai.console.internal.extension.GlobalComponentStorage
 import net.mamoe.mirai.console.internal.permission.BuiltInPermissionService
 import net.mamoe.mirai.console.internal.plugin.PluginManagerImpl
 import net.mamoe.mirai.console.internal.util.autoHexToBytes
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/extensions/BuiltInSingletonExtensionSelector.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/extension/BuiltInSingletonExtensionSelector.kt
similarity index 98%
rename from backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/extensions/BuiltInSingletonExtensionSelector.kt
rename to backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/extension/BuiltInSingletonExtensionSelector.kt
index 5308ba4a3..5b50e64ca 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/extensions/BuiltInSingletonExtensionSelector.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/extension/BuiltInSingletonExtensionSelector.kt
@@ -1,4 +1,4 @@
-package net.mamoe.mirai.console.internal.extensions
+package net.mamoe.mirai.console.internal.extension
 
 import kotlinx.coroutines.runBlocking
 import net.mamoe.mirai.console.MiraiConsole
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/extension/ComponentStorageInternal.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/extension/ComponentStorageInternal.kt
new file mode 100644
index 000000000..6527aadb3
--- /dev/null
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/extension/ComponentStorageInternal.kt
@@ -0,0 +1,164 @@
+/*
+ * Copyright 2020 Mamoe Technologies and contributors.
+ *
+ * 此源代码的使用受 GNU AFFERO GENERAL PUBLIC LICENSE version 3 许可证的约束, 可以在以下链接找到该许可证.
+ * Use of this source code is governed by the GNU AGPLv3 license that can be found through the following link.
+ *
+ * https://github.com/mamoe/mirai/blob/master/LICENSE
+ */
+
+package net.mamoe.mirai.console.internal.extension
+
+import net.mamoe.mirai.console.extension.*
+import net.mamoe.mirai.console.extensions.SingletonExtensionSelector
+import net.mamoe.mirai.console.extensions.SingletonExtensionSelector.ExtensionPoint.selectSingleton
+import net.mamoe.mirai.console.internal.data.kClassQualifiedNameOrTip
+import net.mamoe.mirai.console.plugin.Plugin
+import net.mamoe.mirai.console.plugin.name
+import java.util.concurrent.ConcurrentHashMap
+import java.util.concurrent.CopyOnWriteArraySet
+import kotlin.contracts.contract
+import kotlin.reflect.KClass
+
+internal object GlobalComponentStorage : AbstractConcurrentComponentStorage()
+internal interface ExtensionRegistry<out E : Extension> {
+    val plugin: Plugin
+    val extension: E
+
+    operator fun component1(): Plugin {
+        return this.plugin
+    }
+
+    operator fun component2(): E {
+        return this.extension
+    }
+}
+
+internal class LazyExtensionRegistry<out E : Extension>(
+    override val plugin: Plugin,
+    initializer: () -> E,
+) : ExtensionRegistry<E> {
+    override val extension: E by lazy { initializer() }
+}
+
+internal data class DataExtensionRegistry<out E : Extension>(
+    override val plugin: Plugin,
+    override val extension: E,
+) : ExtensionRegistry<E>
+
+internal abstract class AbstractConcurrentComponentStorage : ComponentStorage {
+    @Suppress("UNCHECKED_CAST")
+    internal fun <T : Extension> ExtensionPoint<out T>.getExtensions(): Set<ExtensionRegistry<T>> {
+        return instances.getOrPut(this, ::CopyOnWriteArraySet) as Set<ExtensionRegistry<T>>
+    }
+
+    internal fun mergeWith(another: AbstractConcurrentComponentStorage) {
+        for ((ep, list) in another.instances) {
+            for (extensionRegistry in list) {
+                @Suppress("UNCHECKED_CAST")
+                ep as ExtensionPoint<Extension>
+                this.contribute(ep, extensionRegistry.plugin, lazyInstance = { extensionRegistry.extension })
+            }
+        }
+    }
+
+    internal inline fun <T : Extension> ExtensionPoint<out T>.withExtensions(block: T.() -> Unit) {
+        return withExtensions { _ -> block() }
+    }
+
+    @Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")
+    @kotlin.internal.LowPriorityInOverloadResolution
+    internal inline fun <T : Extension> ExtensionPoint<out T>.withExtensions(block: T.(plugin: Plugin) -> Unit) {
+        contract {
+            callsInPlace(block)
+        }
+        for ((plugin, extension) in this.getExtensions()) {
+            kotlin.runCatching {
+                block.invoke(extension, plugin)
+            }.getOrElse { throwable ->
+                throwExtensionException(extension, plugin, throwable)
+            }
+        }
+    }
+
+    internal inline fun <reified E : SingletonExtension<*>> ExtensionPoint<out E>.findSingleton(builtin: E): E =
+        findSingleton(E::class, builtin)
+
+    internal fun <E : SingletonExtension<*>> ExtensionPoint<out E>.findSingleton(type: KClass<E>, builtin: E): E {
+        val candidates = this.getExtensions()
+        return when (candidates.size) {
+            0 -> builtin
+            1 -> candidates.single().extension
+            else -> SingletonExtensionSelector.instance.selectSingleton(type, candidates) ?: builtin
+        }
+    }
+
+    internal inline fun <reified E : SingletonExtension<T>, T> ExtensionPoint<out E>.findSingletonInstance(builtin: T): T =
+        findSingletonInstance(E::class, builtin)
+
+    internal fun <E : SingletonExtension<T>, T> ExtensionPoint<out E>.findSingletonInstance(
+        type: KClass<E>,
+        builtin: T,
+    ): T {
+        val candidates = this.getExtensions()
+        return when (candidates.size) {
+            0 -> builtin
+            1 -> candidates.single().extension.instance
+            else -> SingletonExtensionSelector.instance.selectSingleton(type, candidates)?.instance ?: builtin
+        }
+    }
+
+    internal inline fun <T : Extension, E> ExtensionPoint<out T>.foldExtensions(
+        initial: E,
+        block: (acc: E, extension: T) -> E,
+    ): E {
+        contract {
+            callsInPlace(block)
+        }
+        var e: E = initial
+        for ((plugin, extension) in this.getExtensions()) {
+            kotlin.runCatching {
+                e = block.invoke(e, extension)
+            }.getOrElse { throwable ->
+                throwExtensionException(extension, plugin, throwable)
+            }
+        }
+        return e
+    }
+
+    internal fun <T : Extension> ExtensionPoint<out T>.throwExtensionException(
+        extension: T,
+        plugin: Plugin,
+        throwable: Throwable,
+    ) {
+        throw ExtensionException(
+            "Exception while executing extension '${extension.kClassQualifiedNameOrTip}' provided by plugin '${plugin.name}', registered for '${this.extensionType.qualifiedName}'",
+            throwable
+        )
+    }
+
+    internal inline fun <T : Extension> ExtensionPoint<T>.useExtensions(block: (extension: T) -> Unit): Unit =
+        withExtensions(block)
+
+    @Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")
+    @kotlin.internal.LowPriorityInOverloadResolution
+    internal inline fun <T : Extension> ExtensionPoint<T>.useExtensions(block: (extension: T, plugin: Plugin) -> Unit): Unit =
+        withExtensions(block)
+
+    val instances: MutableMap<ExtensionPoint<*>, MutableSet<ExtensionRegistry<*>>> = ConcurrentHashMap()
+    override fun <T : Extension> contribute(
+        extensionPoint: ExtensionPoint<T>,
+        plugin: Plugin,
+        extensionInstance: T,
+    ) {
+        instances.getOrPut(extensionPoint, ::CopyOnWriteArraySet).add(DataExtensionRegistry(plugin, extensionInstance))
+    }
+
+    override fun <T : Extension> contribute(
+        extensionPoint: ExtensionPoint<T>,
+        plugin: Plugin,
+        lazyInstance: () -> T,
+    ) {
+        instances.getOrPut(extensionPoint, ::CopyOnWriteArraySet).add(LazyExtensionRegistry(plugin, lazyInstance))
+    }
+}
\ No newline at end of file
diff --git a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/plugin/PluginManagerImpl.kt b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/plugin/PluginManagerImpl.kt
index f6776bd8f..f84e8f4c5 100644
--- a/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/plugin/PluginManagerImpl.kt
+++ b/backend/mirai-console/src/main/kotlin/net/mamoe/mirai/console/internal/plugin/PluginManagerImpl.kt
@@ -14,10 +14,10 @@ package net.mamoe.mirai.console.internal.plugin
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Job
 import net.mamoe.mirai.console.MiraiConsole
-import net.mamoe.mirai.console.extension.GlobalComponentStorage
 import net.mamoe.mirai.console.extensions.PluginLoaderProvider
 import net.mamoe.mirai.console.internal.data.cast
 import net.mamoe.mirai.console.internal.data.mkdir
+import net.mamoe.mirai.console.internal.extension.GlobalComponentStorage
 import net.mamoe.mirai.console.plugin.Plugin
 import net.mamoe.mirai.console.plugin.PluginManager
 import net.mamoe.mirai.console.plugin.description.PluginDependency