diff --git a/package.json b/package.json
index c9bb0a383..1679ae1d7 100644
--- a/package.json
+++ b/package.json
@@ -94,7 +94,8 @@
     "check:ci": "node refactor/scripts/ci-workflow.mjs",
     "test:ci": "node --test test/ci-summary.test.js refactor/scripts/ci-workflow.test.mjs refactor/scripts/impact.test.mjs test/package-runtime.test.js",
     "test:package:runtime": "node scripts/package-runtime.mjs --canonical",
-    "test:asr": "node --test test/asr.test.js test/asr-audio.test.js test/asr-encoding.test.js test/asr-lifecycle.test.js test/asr-distribution.test.js"
+    "test:asr": "node --test test/asr.test.js test/asr-audio.test.js test/asr-encoding.test.js test/asr-lifecycle.test.js test/asr-distribution.test.js",
+    "test:asr-types-package": "node refactor/scripts/asr-package-types.mjs"
   },
   "browserslist": "last 1 Chrome version",
   "devDependencies": {
diff --git a/packages/artplayer-plugin-asr/.npmignore b/packages/artplayer-plugin-asr/.npmignore
index 4439c6874..2b272d565 100644
--- a/packages/artplayer-plugin-asr/.npmignore
+++ b/packages/artplayer-plugin-asr/.npmignore
@@ -2,4 +2,5 @@ node_modules
 .DS_Store
 yarn.lock
 package-lock.json
-src
\ No newline at end of file
+src
+tsconfig.json
diff --git a/packages/artplayer-plugin-asr/ARCHITECTURE.md b/packages/artplayer-plugin-asr/ARCHITECTURE.md
index 411f19eec..35753e613 100644
--- a/packages/artplayer-plugin-asr/ARCHITECTURE.md
+++ b/packages/artplayer-plugin-asr/ARCHITECTURE.md
@@ -63,10 +63,20 @@ HTML, punctuation splitting, replacement, ignored non-string values and the
 historical `length=0` behavior. The CJS function has a non-enumerable self `default`
 alias for consumers of the 2.0 namespace, while preserving the callable 2.1 form.
 
-Root public declarations have not yet migrated: they describe stop as void and
-the callback as void/Promise<void>. PKG-ASR-04 owns exact asynchronous public types,
-old assignment consumers, module forms and installed tarball acceptance. Internal
-strict TypeScript does not prove that public type migration complete.
+Root and `/legacy` declarations intentionally retain the historical factory,
+void stop and void/Promise<void> callback. Their NodeNext ESM default import remains
+the old namespace type: changing it into a callable default would break legal
+namespace substitution. Historical direct-call errors are frozen separately from
+legal namespace consumers. Do not silently rewrite these declarations to match
+runtime behavior or require a self-default property on old replacement factories.
+
+The additive `/runtime` entry references the same main/ESM implementation, with
+`RuntimeOption`, `RuntimeResult` and `RuntimeFactory`: callback text/null/no result
+and asynchronous stop are accurate. Its `.d.mts` default export and `.d.cts`/
+`.d.ts` export assignment support ESM, raw CommonJS and old Node10 resolution.
+Pure type namespaces make all four named runtime types available in every mode.
+The root also exports those types for convenient annotations. No runtime code or
+version changes are needed for this entry.
 
 From the repository root:
 
@@ -76,6 +86,11 @@ From the repository root:
   published/current core, pause/resume, source switch, stop/restart and destroy.
   Set `ARTPLAYER_ASR_ARTIFACT` to an actual main/legacy file to test that artifact.
 - `yarn typecheck`: includes the package strict/noUncheckedIndexedAccess project.
+- `yarn test:asr-types-package`: packs and installs core/ASR outside the workspace,
+  checks frozen 2.0/2.1 consumers and candidate declarations in strict compiler
+  modes, verifies offline frozen reinstall and file hashes, exercises actual
+  import/require exports, and rejects invalid uses. Historical declaration errors
+  are explicit expectations and never counted as candidate success.
 - `yarn dev artplayer-plugin-asr` and `yarn build artplayer-plugin-asr`: normal
   repository development and three-format production builds.
 
diff --git a/packages/artplayer-plugin-asr/README.md b/packages/artplayer-plugin-asr/README.md
index e1c4ae10b..c45e815b3 100644
--- a/packages/artplayer-plugin-asr/README.md
+++ b/packages/artplayer-plugin-asr/README.md
@@ -8,6 +8,35 @@ restart capture; the player's direct Web Audio connection remains alive until
 the player is destroyed so that stopping recognition does not silence playback.
 Call `art.destroy()` when disposing the player.
 
+## TypeScript
+
+Existing imports keep their historical types, including `stop(): void` and a
+`void | Promise<void>` recognition callback. For accurate asynchronous types, use
+the additive `/runtime` entry. It loads the same implementation as the root entry:
+
+```ts
+import Artplayer from 'artplayer'
+import asr from 'artplayer-plugin-asr/runtime'
+import type { RuntimeOption } from 'artplayer-plugin-asr/runtime'
+
+const option: RuntimeOption = {
+  onAudioChunk: async ({ pcm, wav }) => {
+    // Send one of these buffers to your own recognition service.
+    void [pcm, wav]
+    return 'Recognized text.'
+  },
+}
+const art = new Artplayer({ container: '#player', url: '/video.mp4' })
+const recognition = asr(option)(art)
+await recognition.stop()
+```
+
+The callback may return text, `null`, or no value, synchronously or asynchronously.
+CommonJS TypeScript can use `import asr = require('artplayer-plugin-asr/runtime')`.
+The root declaration retains its historical NodeNext ESM namespace shape; use
+`/runtime` for a directly callable default import in that mode. This is an opt-in
+type entry, and does not require changes to existing JavaScript consumers.
+
 ## Maintenance
 
 See [ARCHITECTURE.md](ARCHITECTURE.md) for the current audio flow, public behavior,
diff --git a/packages/artplayer-plugin-asr/package.json b/packages/artplayer-plugin-asr/package.json
index f3a364521..87b00c8f5 100644
--- a/packages/artplayer-plugin-asr/package.json
+++ b/packages/artplayer-plugin-asr/package.json
@@ -27,11 +27,31 @@
       "types": "./types/artplayer-plugin-asr.d.ts",
       "import": "./dist/artplayer-plugin-asr.legacy.js",
       "require": "./dist/artplayer-plugin-asr.legacy.js"
+    },
+    "./runtime": {
+      "import": {
+        "types": "./types/runtime.d.mts",
+        "default": "./dist/artplayer-plugin-asr.mjs"
+      },
+      "require": {
+        "types": "./types/runtime.d.cts",
+        "default": "./dist/artplayer-plugin-asr.js"
+      }
     }
   },
   "main": "./dist/artplayer-plugin-asr.js",
   "module": "./dist/artplayer-plugin-asr.mjs",
   "types": "./types/artplayer-plugin-asr.d.ts",
   "legacy": "./dist/artplayer-plugin-asr.legacy.js",
-  "browserslist": "last 1 Chrome version"
+  "browserslist": "last 1 Chrome version",
+  "typesVersions": {
+    "*": {
+      "legacy": [
+        "types/artplayer-plugin-asr.d.ts"
+      ],
+      "runtime": [
+        "types/runtime.d.ts"
+      ]
+    }
+  }
 }
diff --git a/packages/artplayer-plugin-asr/tsconfig.json b/packages/artplayer-plugin-asr/tsconfig.json
index c9218405d..bba301755 100644
--- a/packages/artplayer-plugin-asr/tsconfig.json
+++ b/packages/artplayer-plugin-asr/tsconfig.json
@@ -1,5 +1,5 @@
 {
   "extends": "../../tsconfig.base.json",
   "compilerOptions": { "allowJs": false },
-  "include": ["src/**/*.ts", "types/**/*.d.ts", "../../types/assets.d.ts"]
+  "include": ["src/**/*.ts", "types/**/*.d.ts", "types/**/*.d.mts", "types/**/*.d.cts", "../../types/assets.d.ts"]
 }
diff --git a/packages/artplayer-plugin-asr/types/artplayer-plugin-asr.d.ts b/packages/artplayer-plugin-asr/types/artplayer-plugin-asr.d.ts
index 13aed0ccd..0cf2329ab 100644
--- a/packages/artplayer-plugin-asr/types/artplayer-plugin-asr.d.ts
+++ b/packages/artplayer-plugin-asr/types/artplayer-plugin-asr.d.ts
@@ -1,11 +1,11 @@
 import type Artplayer from 'artplayer'
 
-interface AudioChunk {
+export interface AudioChunk {
   pcm: ArrayBuffer
   wav: ArrayBuffer
 }
 
-interface AsrPluginOption {
+export interface AsrPluginOption {
   length?: number
   interval?: number
   sampleRate?: number
@@ -13,13 +13,30 @@ interface AsrPluginOption {
   onAudioChunk?: (chunk: AudioChunk) => void | Promise<void>
 }
 
-interface AsrPluginInstance {
+export interface AsrPluginInstance {
   name: 'artplayerPluginAsr'
   stop: () => void
   hide: () => void
   append: (subtitle: string) => void
 }
 
+/** Historical factory shape, including void stop and callback results. */
+export type Factory = (option?: AsrPluginOption) => (art: Artplayer) => AsrPluginInstance
+
+/** Accurate asynchronous view available through the /runtime entry. */
+export interface RuntimeOption extends Omit<AsrPluginOption, 'onAudioChunk'> {
+  onAudioChunk?: (chunk: AudioChunk) => string | void | null | Promise<string | void | null>
+}
+
+export interface RuntimeResult extends Omit<AsrPluginInstance, 'stop'> {
+  stop: () => Promise<void>
+}
+
+export interface RuntimeFactory {
+  (option?: RuntimeOption): (art: Artplayer) => RuntimeResult
+  readonly default: RuntimeFactory
+}
+
 declare function artplayerPluginAsr(option?: AsrPluginOption): (art: Artplayer) => AsrPluginInstance
 
 export default artplayerPluginAsr
diff --git a/packages/artplayer-plugin-asr/types/runtime.d.cts b/packages/artplayer-plugin-asr/types/runtime.d.cts
new file mode 100644
index 000000000..cd00f3c7e
--- /dev/null
+++ b/packages/artplayer-plugin-asr/types/runtime.d.cts
@@ -0,0 +1,11 @@
+import type { RuntimeFactory } from './artplayer-plugin-asr.js'
+
+declare const artplayerPluginAsr: RuntimeFactory
+// eslint-disable-next-line ts/no-redeclare -- Ambient merge exposes types on the CommonJS factory.
+declare namespace artplayerPluginAsr {
+  type AudioChunk = import('./artplayer-plugin-asr.js').AudioChunk
+  type RuntimeFactory = import('./artplayer-plugin-asr.js').RuntimeFactory
+  type RuntimeOption = import('./artplayer-plugin-asr.js').RuntimeOption
+  type RuntimeResult = import('./artplayer-plugin-asr.js').RuntimeResult
+}
+export = artplayerPluginAsr
diff --git a/packages/artplayer-plugin-asr/types/runtime.d.mts b/packages/artplayer-plugin-asr/types/runtime.d.mts
new file mode 100644
index 000000000..73dae478e
--- /dev/null
+++ b/packages/artplayer-plugin-asr/types/runtime.d.mts
@@ -0,0 +1,5 @@
+import type { RuntimeFactory } from './artplayer-plugin-asr.js'
+
+declare const artplayerPluginAsr: RuntimeFactory
+export default artplayerPluginAsr
+export type { AudioChunk, RuntimeFactory, RuntimeOption, RuntimeResult } from './artplayer-plugin-asr.js'
diff --git a/packages/artplayer-plugin-asr/types/runtime.d.ts b/packages/artplayer-plugin-asr/types/runtime.d.ts
new file mode 100644
index 000000000..cd00f3c7e
--- /dev/null
+++ b/packages/artplayer-plugin-asr/types/runtime.d.ts
@@ -0,0 +1,11 @@
+import type { RuntimeFactory } from './artplayer-plugin-asr.js'
+
+declare const artplayerPluginAsr: RuntimeFactory
+// eslint-disable-next-line ts/no-redeclare -- Ambient merge exposes types on the CommonJS factory.
+declare namespace artplayerPluginAsr {
+  type AudioChunk = import('./artplayer-plugin-asr.js').AudioChunk
+  type RuntimeFactory = import('./artplayer-plugin-asr.js').RuntimeFactory
+  type RuntimeOption = import('./artplayer-plugin-asr.js').RuntimeOption
+  type RuntimeResult = import('./artplayer-plugin-asr.js').RuntimeResult
+}
+export = artplayerPluginAsr
diff --git a/refactor/baselines/asr-type-diagnostics.json b/refactor/baselines/asr-type-diagnostics.json
new file mode 100644
index 000000000..517a7d49e
--- /dev/null
+++ b/refactor/baselines/asr-type-diagnostics.json
@@ -0,0 +1,254 @@
+{
+  "schemaVersion": 1,
+  "task": "PKG-ASR-04",
+  "sourceReport": "refactor/.cache/asr-package-types-3KzGBO/report.json",
+  "scope": "Observed strict installed consumers from frozen 2.0.0 and 2.1.0 archives with packed candidate core. Both old NodeNext ESM default imports are namespaces; direct-call diagnostics are retained, not counted as passing compatibility. Legal namespace consumers are verified separately.",
+  "cases": [
+    {
+      "plugin": "published-2.0.0",
+      "compiler": "5.9.3",
+      "mode": "node10-commonjs",
+      "diagnostics": []
+    },
+    {
+      "plugin": "published-2.0.0",
+      "compiler": "5.9.3",
+      "mode": "nodenext-cjs",
+      "diagnostics": []
+    },
+    {
+      "plugin": "published-2.0.0",
+      "compiler": "5.9.3",
+      "mode": "nodenext-esm",
+      "diagnostics": [
+        {
+          "file": "consumer.mts",
+          "line": 26,
+          "code": 2322,
+          "message": "Type '{ length: number; interval: number; sampleRate: number; autoHideTimeout: number; onAudioChunk(chunk: any): void; }' is not assignable to type 'never'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 26,
+          "code": 2344,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' does not satisfy the constraint '(...args: any) => any'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(...args: any): any'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 31,
+          "code": 7006,
+          "message": "Parameter 'chunk' implicitly has an 'any' type."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 37,
+          "code": 2322,
+          "message": "Type 'undefined' is not assignable to type 'never'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 37,
+          "code": 2344,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' does not satisfy the constraint '(...args: any) => any'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(...args: any): any'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 39,
+          "code": 2344,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' does not satisfy the constraint '(...args: any) => any'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(...args: any): any'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 46,
+          "code": 2322,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' is not assignable to type 'PublishedFactory'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(option?: PublishedOption | undefined): (art: Artplayer) => PublishedResult'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 47,
+          "code": 2322,
+          "message": "Type 'PublishedFactory' is not assignable to type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 48,
+          "code": 2322,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' is not assignable to type 'PublishedFactory'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(option?: PublishedOption | undefined): (art: Artplayer) => PublishedResult'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 49,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 49,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 49,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 49,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 50,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 54,
+          "code": 2339,
+          "message": "Property 'onAudioChunk' does not exist on type 'never'."
+        }
+      ]
+    },
+    {
+      "plugin": "published-2.0.0",
+      "compiler": "5.9.3",
+      "mode": "bundler-esm",
+      "diagnostics": []
+    },
+    {
+      "plugin": "published-2.0.0",
+      "compiler": "4.3.5",
+      "mode": "node10-commonjs",
+      "diagnostics": []
+    },
+    {
+      "plugin": "published-2.1.0",
+      "compiler": "5.9.3",
+      "mode": "node10-commonjs",
+      "diagnostics": []
+    },
+    {
+      "plugin": "published-2.1.0",
+      "compiler": "5.9.3",
+      "mode": "nodenext-cjs",
+      "diagnostics": []
+    },
+    {
+      "plugin": "published-2.1.0",
+      "compiler": "5.9.3",
+      "mode": "nodenext-esm",
+      "diagnostics": [
+        {
+          "file": "consumer.mts",
+          "line": 26,
+          "code": 2322,
+          "message": "Type '{ length: number; interval: number; sampleRate: number; autoHideTimeout: number; onAudioChunk(chunk: any): void; }' is not assignable to type 'never'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 26,
+          "code": 2344,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' does not satisfy the constraint '(...args: any) => any'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(...args: any): any'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 31,
+          "code": 7006,
+          "message": "Parameter 'chunk' implicitly has an 'any' type."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 37,
+          "code": 2322,
+          "message": "Type 'undefined' is not assignable to type 'never'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 37,
+          "code": 2344,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' does not satisfy the constraint '(...args: any) => any'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(...args: any): any'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 39,
+          "code": 2344,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' does not satisfy the constraint '(...args: any) => any'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(...args: any): any'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 46,
+          "code": 2322,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' is not assignable to type 'PublishedFactory'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(option?: PublishedOption | undefined): (art: Artplayer) => PublishedResult'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 47,
+          "code": 2322,
+          "message": "Type 'PublishedFactory' is not assignable to type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 48,
+          "code": 2322,
+          "message": "Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' is not assignable to type 'PublishedFactory'.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' provides no match for the signature '(option?: PublishedOption | undefined): (art: Artplayer) => PublishedResult'."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 49,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 49,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 49,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 49,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 50,
+          "code": 2349,
+          "message": "This expression is not callable.\n  Type 'typeof import(\"<consumer>/node_modules/artplayer-plugin-asr/types/artplayer-plugin-asr\")' has no call signatures."
+        },
+        {
+          "file": "consumer.mts",
+          "line": 54,
+          "code": 2339,
+          "message": "Property 'onAudioChunk' does not exist on type 'never'."
+        }
+      ]
+    },
+    {
+      "plugin": "published-2.1.0",
+      "compiler": "5.9.3",
+      "mode": "bundler-esm",
+      "diagnostics": []
+    },
+    {
+      "plugin": "published-2.1.0",
+      "compiler": "4.3.5",
+      "mode": "node10-commonjs",
+      "diagnostics": []
+    }
+  ],
+  "fixtures": {
+    "refactor/fixtures/consumers/asr-published.ts": "7611ab9ef9765fe6a6ca5112589228d49012400bf0b9d9cede96ead8e63cffc2",
+    "refactor/fixtures/consumers/asr-esm-namespace.ts": "1e3b7475452f43f71e4e038c17368860fe2bc00a61451397fe609e9a3e078d98"
+  }
+}
diff --git a/refactor/baselines/asr-types-validation.json b/refactor/baselines/asr-types-validation.json
new file mode 100644
index 000000000..6f0d97ccc
--- /dev/null
+++ b/refactor/baselines/asr-types-validation.json
@@ -0,0 +1,363 @@
+{
+  "schemaVersion": 1,
+  "task": "PKG-ASR-04",
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+    "package.json": "a95566e7e6825cda949428a71d11cbcc39c1ba3651fc631ed8511ca5e078d340"
+  },
+  "evidence": [
+    {
+      "file": "refactor/.cache/asr-package-types-nlZPaL/report.json",
+      "sha256": "5b32bda6481f74a9db7fe68f54f36a9752deb2cbb8e56b2a42cdc061297b8df7"
+    },
+    {
+      "file": "refactor/.cache/asr04-installed-final.log",
+      "sha256": "cebbdebc4b5419f16e419a33e0ba5ae33102091c3dcfd2fb95d541f0e2640634"
+    },
+    {
+      "file": "refactor/.cache/asr04-strict-final.log",
+      "sha256": "0d6e90ea1b4dadf17e3dd5dee44c3894e17455e124d2a7ab31d5850249ec72b7"
+    },
+    {
+      "file": "refactor/.cache/asr04-lint-final.log",
+      "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+    },
+    {
+      "file": "refactor/.cache/asr04-artifact-identity.log",
+      "sha256": "0ad9dc4536c26e81edf671c68cc218aef044e3655bc1ba91afbcf42187783215"
+    }
+  ],
+  "unchangedRuntimeEvidence": "refactor/baselines/asr-ownership-validation.json",
+  "limitation": [
+    "No full CI or browser rerun for unchanged JS",
+    "Node 24 actual installs only; full Node/OS distribution matrix remains later acceptance",
+    "ASR-05 native fallback/volume/CORS/device evidence remains incomplete",
+    "ASR-06 release documentation and distribution remains incomplete"
+  ],
+  "releaseReady": false
+}
diff --git a/refactor/changes/2026-09-13-PKG-ASR-04-public-types.md b/refactor/changes/2026-09-13-PKG-ASR-04-public-types.md
new file mode 100644
index 000000000..3f6411122
--- /dev/null
+++ b/refactor/changes/2026-09-13-PKG-ASR-04-public-types.md
@@ -0,0 +1,53 @@
+# PKG-ASR-04：ASR 公共类型与隔离安装
+
+本任务延续 ASR-03 的 8 个严格 TS 模块，处理公共类型与安装边界。保留根入口及
+`/legacy` 的历史工厂形状，新增 `/runtime` 精确描述回调返回字幕、异步 stop。
+不改运行时 JS、不新增依赖、不修改版本；大版本与发布仍按后续任务统一执行。
+
+## 兼容决策
+
+- 根入口仍是原来的可选参数、同步注册、void stop、void/Promise<void> callback；
+  旧工厂和插件结果可双向赋值，Parameters/ReturnType 提取也保留。
+- `/runtime` 加载同一 main/ESM 产物，只提供准确的类型入口：回调可同步或异步返回
+  string/null/void，stop 返回 Promise<void>，工厂具有只读 self.default。
+  不将 self.default 加到旧工厂类型，避免要求用户的替换函数提供额外属性。
+- root 与 runtime 都导出 AudioChunk/RuntimeOption/RuntimeResult/RuntimeFactory。
+  runtime 的 ESM 使用 `.d.mts`，CommonJS/Node10 使用 export assignment。
+  子代理发现后者漏了命名类型，已补纯类型 namespace 并加入四类型等价回归。
+- 旧根声明在 NodeNext ESM 下把 default import 描述成命名空间，合法的
+  `asr.default()`、`namespace.default.default()` 和 `{default: factory}` 替换必须保留。
+  原拟直接工厂 `.d.mts` 会破坏这些旧类型用法，已撤回；准确 ESM 默认导入用 `/runtime`。
+  这是声明兼容测试，不能推断旧 JS 支持所有双层 default 调用。
+
+包内 README 给出新入口用法，ARCHITECTURE 记录维护限制。实际打包发现 tsconfig
+泄漏，已补 `.npmignore`，保留所有历史 dist/types 文件。源码 TS 与测试不进入包。
+
+## 验证与证据
+
+`yarn test:asr-types-package` 实际打包核心与 ASR，在工作区外逐个安装 frozen
+2.0.0、2.1.0 及候选包。离线安装后用 frozen lockfile 再安装；检查锁文件不变、
+无工作区符号链接、全部包文件与 archive 哈希相符。类型程序只能读取该临时消费者
+及当前编译器标准库；strict、skipLibCheck:false、types:[]，不靠 ambient 类型兜底。
+
+- 2 个旧发布包各 5 种配置；每包 4 种直接用法通过，NodeNext ESM 原有 15 条诊断
+  按完整消息冻结。合法 ESM 命名空间 fixture 在两个旧包及候选包均通过。
+- 候选 7 种配置：TS 5.9.3 Node10/NodeNext CJS/NodeNext ESM/Bundler，TS 4.3.5
+  Node10，以及两编译器 Node10 关闭 interop。每种公共用法零诊断，12 项负例在
+  各自语句行被拒绝；原 direct fixture 的 NodeNext ESM 诊断也与旧包一致。
+- 实际 Node 24.21.0 import/require 验证三候选入口、root/runtime 实现身份、
+  self.default 不可枚举、legacy 默认导入身份；旧包验证各自 CJS 和 ESM 导出。
+- 根项目及 ASR 分包严格检查通过，source/public 类型边界加入持续检查。
+  定向 ESLint 和台账测试通过，ASR 构建 JS 与 ASR-03 HEAD 逐字节相同。
+
+类型反例中的 typed-array 与 ArrayBuffer 在旧 TS 标准库下结构可赋值，不能声称
+TS 4.3.5 会拒绝。负例使用所有目标编译器都应拒绝的字符串 buffer，保持公开
+ArrayBuffer 字段不变；没有通过缩窄字段或升级最低编译器绕过兼容性。
+
+具体 archive、输入、日志哈希及矩阵摘要见
+[验证记录](../baselines/asr-types-validation.json)，旧 direct 诊断见
+[冻结声明诊断](../baselines/asr-type-diagnostics.json)。此前 ASR-03 的音频/浏览器
+证据继续对应未变的 JS；本任务没有重复整仓 CI 或浏览器回归，也不声称完成真实
+fallback、音量/静音、CORS、物理设备或全 Node 版本验收。这些仍归 ASR-05/06。
+
+子代理独立提供公共/历史消费者与声明审查，主代理修复声明、运行实际隔离安装、
+整合证据和提交。回退本任务移除新增类型入口与测试，不改变 ASR-03 运行时修复。
diff --git a/refactor/fixtures/consumers/asr-esm-namespace.ts b/refactor/fixtures/consumers/asr-esm-namespace.ts
new file mode 100644
index 000000000..513301203
--- /dev/null
+++ b/refactor/fixtures/consumers/asr-esm-namespace.ts
@@ -0,0 +1,46 @@
+import type Artplayer from 'artplayer'
+import asr from 'artplayer-plugin-asr'
+import * as namespace from 'artplayer-plugin-asr'
+
+// Compile this fixture as .mts with NodeNext: published declarations expose
+// a CommonJS declaration namespace even though the runtime import is ESM.
+interface HistoricalOption {
+  length?: number
+  interval?: number
+  sampleRate?: number
+  autoHideTimeout?: number
+  onAudioChunk?: (chunk: { pcm: ArrayBuffer, wav: ArrayBuffer }) => void | Promise<void>
+}
+
+interface HistoricalResult {
+  name: 'artplayerPluginAsr'
+  stop: () => void
+  hide: () => void
+  append: (subtitle: string) => void
+}
+
+type HistoricalFactory = (option?: HistoricalOption) => (art: Artplayer) => HistoricalResult
+interface HistoricalModule { default: HistoricalFactory }
+const result: ReturnType<ReturnType<typeof asr.default>> = {
+  name: 'artplayerPluginAsr',
+  stop() {},
+  hide() {},
+  append(_subtitle: string) {},
+}
+const replacementFactory: HistoricalFactory = (_option?: HistoricalOption) => (_art: Artplayer) => result
+const replacementModule: typeof asr = { default: replacementFactory }
+const assignToOld: HistoricalModule = asr
+const assignFromOld: typeof asr = assignToOld
+const namespaceModule: typeof namespace.default = replacementModule
+const factoryToOld: HistoricalFactory = asr.default
+const factoryFromOld: typeof asr.default = replacementFactory
+const option: Parameters<typeof asr.default>[0] = {
+  onAudioChunk: async (_chunk): Promise<void> => {},
+}
+const absent: Parameters<typeof namespace.default.default>[0] = undefined
+declare const art: Artplayer
+const installed: HistoricalResult = asr.default(option)(art)
+const namespaceResult: HistoricalResult = namespace.default.default(absent)(art)
+const stop: void = installed.stop()
+const append: void = namespaceResult.append('Old namespace import.')
+void [assignFromOld, namespaceModule, factoryToOld, factoryFromOld, stop, append]
diff --git a/refactor/fixtures/consumers/asr-published.ts b/refactor/fixtures/consumers/asr-published.ts
new file mode 100644
index 000000000..bd46f57fe
--- /dev/null
+++ b/refactor/fixtures/consumers/asr-published.ts
@@ -0,0 +1,55 @@
+import Artplayer from 'artplayer'
+import asr from 'artplayer-plugin-asr'
+import * as namespace from 'artplayer-plugin-asr'
+
+interface PublishedChunk {
+  pcm: ArrayBuffer
+  wav: ArrayBuffer
+}
+
+interface PublishedOption {
+  length?: number
+  interval?: number
+  sampleRate?: number
+  autoHideTimeout?: number
+  onAudioChunk?: (chunk: PublishedChunk) => void | Promise<void>
+}
+
+interface PublishedResult {
+  name: 'artplayerPluginAsr'
+  stop: () => void
+  hide: () => void
+  append: (subtitle: string) => void
+}
+
+type PublishedFactory = (option?: PublishedOption) => (art: Artplayer) => PublishedResult
+const option: Parameters<typeof asr>[0] = {
+  length: 3,
+  interval: 100,
+  sampleRate: 16000,
+  autoHideTimeout: 10000,
+  onAudioChunk(chunk) {
+    const pcm: ArrayBuffer = chunk.pcm
+    const wav: ArrayBuffer = chunk.wav
+    void [pcm, wav]
+  },
+}
+const empty: Parameters<typeof asr>[0] = undefined
+const asyncOption: PublishedOption = { onAudioChunk: async (_chunk: PublishedChunk): Promise<void> => {} }
+const result: ReturnType<ReturnType<typeof asr>> = {
+  name: 'artplayerPluginAsr',
+  stop() {},
+  hide() {},
+  append(_subtitle: string) {},
+}
+const replacement: PublishedFactory = (_option?: PublishedOption) => (_art: Artplayer) => result
+const assignToOld: PublishedFactory = asr
+const assignFromOld: typeof asr = replacement
+const namespaceFactory: PublishedFactory = namespace.default
+const art = new Artplayer({ container: '#player', url: '/video.mp4', plugins: [asr(option), asr(asyncOption), asr(), namespace.default(empty)] })
+const installed: PublishedResult = asr(option)(art)
+const stop: void = installed.stop()
+const hide: void = installed.hide()
+const append: void = installed.append('Historical subtitle.')
+const callback: ((chunk: PublishedChunk) => void | Promise<void>) | undefined = option.onAudioChunk
+void [assignToOld, assignFromOld, namespaceFactory, stop, hide, append, callback]
diff --git a/refactor/plan.md b/refactor/plan.md
index c7ee6c3b6..21dfbca44 100644
--- a/refactor/plan.md
+++ b/refactor/plan.md
@@ -4,7 +4,7 @@
 
 基线：`40fcda6a37d0049d42e49c1e64e70d4fd9ba5f7f`。总任务 225 项，范围 22 个包及工作区/示例。
 
-状态：todo 83 / doing 16 / blocked 0 / done 126 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。
+状态：todo 82 / doing 16 / blocked 0 / done 127 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。
 
 前置依赖是启动条件；验收是完成条件。任务可以继续拆分，但不能复用或悄悄删除旧 ID。
 
@@ -254,7 +254,7 @@
 | PKG-ASR-01 | artplayer-plugin-asr<br>核对包契约与历史用法 | BASE-05 | length/interval/sampleRate/onAudioChunk、append/hide/stop 的真实能力 | 源码/声明/README/demo/发布包差异已登记；公开形状和版本范围冻结 | H | done |
 | PKG-ASR-02 | artplayer-plugin-asr<br>建立特有行为与错误测试 | PKG-ASR-01, ENG-03, ENG-05 | PCM/WAV、chunk 时序、回调慢/拒绝、重复初始化与停止 | 旧版本行为可重跑，成功/失败/切源/销毁有必要断言 | H | done |
 | PKG-ASR-03 | artplayer-plugin-asr<br>整理内部职责与资源 | PKG-ASR-02, CORE-10, CORE-18 | AudioContext/Worklet/Stream 生命周期和背压分离 | 结构变化和缺陷修复分开记录；原 API/事件/资源生命周期通过 | H | done |
-| PKG-ASR-04 | artplayer-plugin-asr<br>迁移自有源码和公开类型 | PKG-ASR-03, ENG-04, ENG-06, CORE-07 | 主线程/Worklet/音频 buffer 与异步回调类型 | 严格类型检查、旧消费样例通过；声明路径/导出和同步异步兼容 | H | todo |
+| PKG-ASR-04 | artplayer-plugin-asr<br>迁移自有源码和公开类型 | PKG-ASR-03, ENG-04, ENG-06, CORE-07 | 主线程/Worklet/音频 buffer 与异步回调类型 | 严格类型检查、旧消费样例通过；声明路径/导出和同步异步兼容 | H | done |
 | PKG-ASR-05 | artplayer-plugin-asr<br>验证新旧核心和组合 | PKG-ASR-04, CORE-22 | 真实 WebAudio 分块、播放暂停/切源/销毁，不引入网络 ASR | 最终核心与原支持范围核心分别通过；设备/SDK 缺证据不能标完成 | H | todo |
 | PKG-ASR-06 | artplayer-plugin-asr<br>验证分发并同步文档 | PKG-ASR-05, ENG-07 | asr.js、Worklet 资源、输出格式与声明证据 | tarball 入口/资源、类型、8082 demo 和 README 一致，有回退记录 | H | todo |
 
@@ -529,6 +529,7 @@
 - PKG-ASR-01: [记录](changes/2026-09-13-PKG-ASR-01-contracts.md) [记录](baselines/asr-contract.md) [记录](baselines/asr-release.json)
 - PKG-ASR-02: [记录](changes/2026-09-13-PKG-ASR-02-audio-baseline.md) [记录](baselines/asr-audio-validation.json)
 - PKG-ASR-03: [记录](changes/2026-09-13-PKG-ASR-03-audio-ownership.md) [记录](baselines/asr-ownership-validation.json)
+- PKG-ASR-04: [记录](changes/2026-09-13-PKG-ASR-04-public-types.md) [记录](baselines/asr-types-validation.json) [记录](baselines/asr-type-diagnostics.json)
 - PKG-ADS-01: [记录](baselines/ads-release.json) [记录](baselines/ads-contract.md) [记录](baselines/ads-contract-validation.json) [记录](changes/2026-09-12-PKG-ADS-01-contract.md) [记录](scripts/ads-contract.test.mjs)
 - PKG-ADS-02: [记录](changes/2026-09-12-PKG-ADS-02-tests.md) [记录](ads-validation.md) [记录](baselines/ads-validation.json)
 - PKG-ADS-03: [记录](changes/2026-09-12-PKG-ADS-03-lifecycle.md) [记录](ads-validation.md) [记录](baselines/ads-lifecycle-validation.json)
diff --git a/refactor/progress.md b/refactor/progress.md
index aaa999a03..92811e1d6 100644
--- a/refactor/progress.md
+++ b/refactor/progress.md
@@ -1,5 +1,19 @@
 # 进度与证据
 
+## PKG-ASR-04 公共类型与安装兼容完成
+
+保留根入口及 legacy 的旧工厂、void stop 和 NodeNext ESM 命名空间形状；新增
+runtime 精确类型入口，描述字幕回调与 Promise stop。子代理补消费者并发现
+CommonJS 命名类型遗漏、旧 ESM 替换对象兼容风险，均修复后由主代理隔离安装验收。
+实际 2.0/2.1/候选共 17 配置：候选 7 配置通过，每种 12 负例按语句拒绝；两旧包
+各有 1 组原生 NodeNext direct 声明错误单独冻结，三个包的合法 namespace 用法通过。
+根/分包 strict、定向 lint、包字节与 frozen reinstall 检查通过，修复 tsconfig 打包泄漏。
+见[变更](changes/2026-09-13-PKG-ASR-04-public-types.md)与[证据](baselines/asr-types-validation.json)。
+225 项：127 done、16 doing、82 todo；205 风险，ASR-TYPE-01 闭环。
+下一步 ASR-05 原生 fallback/音量/跨源/设备组合与 ASR-06 发行；运行时 JS 未改，
+沿用 ASR-03 浏览器证据，本项不等于 ASR 整包发布验收，没有推送或发布。
+
+
 ## PKG-ASR-03 TS 拆分与音频生命周期完成
 
 生产源码拆为 8 个严格 TS 模块；队列保留半块/尾部，识别回调背压、拒绝恢复、
diff --git a/refactor/risk-table.md b/refactor/risk-table.md
index da7acd235..5bce4e423 100644
--- a/refactor/risk-table.md
+++ b/refactor/risk-table.md
@@ -206,6 +206,6 @@
 | JASSUB-EXPORT-01 | open / 已复现 | JASSUB historical CommonJS object.default changes to a direct factory in 1.1.0 | PKG-JASSUB-04, PKG-JASSUB-06 |
 | CORE-DEFAULTS-SSR-01 | resolved / 已复现 | Reading static defaults throws when navigator is absent | CORE-25 |
 | ENG-DIST-PUBLIC-01 | resolved / 已复现 | Vite copied authored declarations into library distribution | ENG-12 |
-| ASR-TYPE-01 | open / 源码/产物事实 | ASR declarations omit asynchronous stop and callback text results | PKG-ASR-04 |
+| ASR-TYPE-01 | resolved / 已复现 | ASR declarations omit asynchronous stop and callback text results | PKG-ASR-04 |
 | ASR-CHUNK-01 | resolved / 已复现 | ASR tick discards underfilled chunks and overrun samples in source | PKG-ASR-02, PKG-ASR-03 |
 | ASR-LIFE-01 | resolved / 已复现 | ASR partial initialization, pause resume and stale callback cleanup need controlled evidence | PKG-ASR-02, PKG-ASR-03, PKG-ASR-05 |
diff --git a/refactor/risks.json b/refactor/risks.json
index e11ca9a0d..767559716 100644
--- a/refactor/risks.json
+++ b/refactor/risks.json
@@ -4545,8 +4545,8 @@
     {
       "id": "ASR-TYPE-01",
       "title": "ASR declarations omit asynchronous stop and callback text results",
-      "confirmation": "source-observed",
-      "status": "open",
+      "confirmation": "reproduced",
+      "status": "resolved",
       "owners": [
         "PKG-ASR-04"
       ],
@@ -4555,7 +4555,15 @@
         "refactor/baselines/asr-release.json"
       ],
       "compatibleResolution": "Keep historical assignment compatibility while supplying accurate asynchronous consumption.",
-      "closureCriteria": "Actual old/new installed TS consumers cover void callback, Promise<void>, returned text and factory substitution."
+      "closureCriteria": "Actual old/new installed TS consumers cover void callback, Promise<void>, returned text and factory substitution.",
+      "resolutionEvidence": [
+        "refactor/changes/2026-09-13-PKG-ASR-04-public-types.md",
+        "refactor/baselines/asr-types-validation.json",
+        "refactor/scripts/asr-package-types.mjs",
+        "test/types/asr-public.ts",
+        "refactor/fixtures/consumers/asr-esm-namespace.ts"
+      ],
+      "resolutionRationale": "Root/legacy preserve historical void callback and stop, factory substitution and legal NodeNext namespace shape. Additive runtime supplies text/null/void callbacks and Promise stop with consistent named types. Actual isolated 2.0/2.1/candidate installs, seven candidate compiler configurations and 12 per-mode invalid statements verify declarations. Existing old NodeNext direct-call diagnostics remain explicit, not candidate success."
     },
     {
       "id": "ASR-CHUNK-01",
diff --git a/refactor/scripts/asr-package-types.mjs b/refactor/scripts/asr-package-types.mjs
new file mode 100644
index 000000000..0744b621b
--- /dev/null
+++ b/refactor/scripts/asr-package-types.mjs
@@ -0,0 +1,166 @@
+import assert from 'node:assert/strict'
+import fs from 'node:fs'
+import path from 'node:path'
+import process from 'node:process'
+import ts from 'typescript'
+import compat from 'typescript-compat'
+import { checkFiles, packedFiles } from '../../scripts/package-check.mjs'
+import { consumerDirectory, removeConsumer, run, workspace, writeJson } from '../../scripts/package-consumer.mjs'
+import { verifyAsrContract } from './asr-contract.mjs'
+import { hash, readMember } from './releases.mjs'
+
+const publicFixture = fs.readFileSync(path.join(workspace, 'test/types/asr-public.ts'), 'utf8')
+const publishedFixture = fs.readFileSync(path.join(workspace, 'refactor/fixtures/consumers/asr-published.ts'), 'utf8')
+const standardModes = [[ts, 'node10-commonjs'], [ts, 'nodenext-cjs'], [ts, 'nodenext-esm'], [ts, 'bundler-esm'], [compat, 'node10-commonjs']]
+
+function typecheck(consumer, compiler, mode, candidate) {
+  const next = mode.startsWith('nodenext')
+  const extension = next ? mode.endsWith('-cjs') ? 'cts' : 'mts' : 'ts'
+  const filename = path.join(consumer, `consumer.${extension}`)
+  const files = [filename]
+  if (candidate && mode !== 'bundler-esm' && mode !== 'nodenext-esm') {
+    const commonjs = path.join(consumer, `commonjs.${extension}`)
+    fs.writeFileSync(commonjs, `import asr = require('artplayer-plugin-asr');
+import legacy = require('artplayer-plugin-asr/legacy');
+import runtime = require('artplayer-plugin-asr/runtime');
+import type Artplayer from 'artplayer';
+const replacement: typeof asr.default = () => (_art: Artplayer) => ({name: 'artplayerPluginAsr', stop() {}, hide() {}, append(_text: string) {}});
+const legacyReplacement: typeof legacy.default = replacement;
+asr.default(); legacy.default(); runtime({onAudioChunk: async () => 'Text.'}); runtime.default();
+declare const art: Artplayer;
+const stopped: Promise<void> = runtime()(art).stop();
+void [legacyReplacement, stopped];`)
+    files.push(commonjs)
+  }
+  const options = {
+    strict: true,
+    noEmit: true,
+    skipLibCheck: false,
+    types: [],
+    esModuleInterop: !mode.endsWith('-no-interop'),
+    target: compiler.ScriptTarget.ES2020,
+    lib: ['lib.es2020.d.ts', 'lib.dom.d.ts'],
+    module: next ? compiler.ModuleKind.NodeNext : mode === 'bundler-esm' ? compiler.ModuleKind.ESNext : compiler.ModuleKind.CommonJS,
+    moduleResolution: next ? compiler.ModuleResolutionKind.NodeNext : mode === 'bundler-esm' ? compiler.ModuleResolutionKind.Bundler : compiler.ModuleResolutionKind.NodeJs,
+  }
+  function compile(code) {
+    fs.writeFileSync(filename, code)
+    const program = compiler.createProgram(files, options)
+    for (const file of program.getSourceFiles()) {
+      const actual = fs.realpathSync(file.fileName)
+      assert(actual.startsWith(fs.realpathSync(consumer) + path.sep)
+        || (program.isSourceFileDefaultLibrary(file) && path.dirname(actual) === fs.realpathSync(path.dirname(compiler.sys.getExecutingFilePath()))), `Types escaped installed consumer: ${actual}`)
+    }
+    return compiler.getPreEmitDiagnostics(program).map(item => ({
+      file: item.file ? path.relative(consumer, item.file.fileName).replaceAll('\\', '/') : null,
+      line: item.file && item.start !== undefined ? item.file.getLineAndCharacterOfPosition(item.start).line + 1 : null,
+      code: item.code,
+      message: compiler.flattenDiagnosticMessageText(item.messageText, '\n').replaceAll(consumer.replaceAll('\\', '/'), '<consumer>'),
+    }))
+  }
+  let source = candidate
+    ? mode.endsWith('-no-interop') ? publicFixture.replace('import runtime from \'artplayer-plugin-asr/runtime\'', 'import runtime = require(\'artplayer-plugin-asr/runtime\')') : publicFixture
+    : publishedFixture
+  if (candidate && mode === 'nodenext-esm') {
+    source = source
+      .replace('import legacy from \'artplayer-plugin-asr\'', 'import legacyModule from \'artplayer-plugin-asr\'\nconst legacy = legacyModule.default')
+      .replace('import legacyEntry from \'artplayer-plugin-asr/legacy\'', 'import legacyEntryModule from \'artplayer-plugin-asr/legacy\'\nconst legacyEntry = legacyEntryModule.default')
+      .replace('namespace.default', 'namespace.default.default')
+  }
+  const diagnostics = compile(source)
+  const invalid = candidate ? compile(source.replaceAll(/\/\/ @ts-expect-error[^\n]*\n/g, '')) : []
+  if (candidate) {
+    const expectedLines = []
+    let line = 1
+    for (const text of source.split('\n')) {
+      if (text.startsWith('// @ts-expect-error'))
+        expectedLines.push(line)
+      else line++
+    }
+    assert.deepEqual(invalid.map(item => item.line).sort((a, b) => a - b), expectedLines, 'Each invalid statement must fail at its own line')
+  }
+  const published = candidate ? compile(publishedFixture) : diagnostics
+  const namespace = mode === 'nodenext-esm' ? compile(fs.readFileSync(path.join(workspace, 'refactor/fixtures/consumers/asr-esm-namespace.ts'), 'utf8')) : []
+  return { compiler: compiler.version, mode, diagnostics, invalid, published, namespace }
+}
+
+async function main() {
+  assert.equal(process.env.npm_config_user_agent?.split(' ')[0], 'yarn/1.22.22', 'Use yarn test:asr-types-package')
+  const yarn = process.env.npm_execpath
+  assert(yarn && fs.existsSync(yarn))
+  const output = fs.mkdtempSync(path.join(workspace, 'refactor/.cache/asr-package-types-'))
+  console.log(`ASR isolated package evidence: ${output}`)
+  const contract = await verifyAsrContract()
+  const expected = JSON.parse(fs.readFileSync(path.join(workspace, 'refactor/baselines/asr-type-diagnostics.json'), 'utf8'))
+  for (const [file, digest] of Object.entries(expected.fixtures))
+    assert.equal(hash(fs.readFileSync(path.join(workspace, file), 'utf8').replaceAll('\r\n', '\n')), digest, `Frozen ASR fixture changed: ${file}`)
+  const packages = []
+  for (const name of ['artplayer', 'artplayer-plugin-asr']) {
+    const archive = path.join(output, `${name}.tgz`)
+    fs.writeFileSync(path.join(output, `${name}-pack.log`), run([yarn, 'pack', '--filename', archive], path.join(workspace, 'packages', name)))
+    const manifest = JSON.parse(readMember(archive, 'package/package.json'))
+    const files = packedFiles(archive)
+    checkFiles(manifest, files, name === contract.baseline.release.name ? Object.keys(contract.baseline.release.files) : [])
+    packages.push({ name, archive, sha256: hash(fs.readFileSync(archive)), files: Object.fromEntries(files.map(member => [member, hash(readMember(archive, member))])) })
+  }
+  const matrix = []
+  const core = packages[0]
+  const candidates = [
+    ...[...contract.baseline.previous].reverse().concat(contract.baseline.release).map(release => ({ ...release, archive: contract.archives.get(release.version), label: `published-${release.version}` })),
+    { ...packages[1], label: 'candidate' },
+  ]
+  for (const plugin of candidates) {
+    const candidate = plugin.label === 'candidate'
+    const consumer = consumerDirectory()
+    try {
+      writeJson(path.join(consumer, 'package.json'), { name: 'asr-isolated-consumer', private: true, dependencies: Object.fromEntries([core, plugin].map(pkg => [pkg.name, `file:${pkg.archive.replaceAll('\\', '/')}`])) })
+      fs.copyFileSync(path.join(workspace, 'yarn.lock'), path.join(consumer, 'yarn.lock'))
+      fs.writeFileSync(path.join(output, `${plugin.label}-install.log`), run([yarn, 'install', '--offline', '--ignore-scripts', '--non-interactive'], consumer))
+      const lock = fs.readFileSync(path.join(consumer, 'yarn.lock'))
+      fs.writeFileSync(path.join(output, `${plugin.label}-frozen-install.log`), run([yarn, 'install', '--offline', '--frozen-lockfile', '--ignore-scripts', '--non-interactive'], consumer))
+      assert.deepEqual(fs.readFileSync(path.join(consumer, 'yarn.lock')), lock)
+      fs.writeFileSync(path.join(output, `${plugin.label}-yarn.lock`), lock)
+      for (const pkg of [core, plugin]) {
+        const root = path.join(consumer, 'node_modules', pkg.name)
+        assert.equal(fs.realpathSync(root), root, 'Installed package must not be a workspace link')
+        for (const [member, expected] of Object.entries(pkg.files))
+          assert.equal(hash(fs.readFileSync(path.join(root, member.slice(8)))), expected, `Installed bytes differ: ${member}`)
+      }
+      const runtimeFile = path.join(consumer, 'exports.cjs')
+      fs.writeFileSync(runtimeFile, candidate
+        ? `const assert = require('node:assert/strict');
+for (const name of ['artplayer-plugin-asr', 'artplayer-plugin-asr/legacy', 'artplayer-plugin-asr/runtime']) { const factory = require(name); assert.equal(typeof factory, 'function'); assert.equal(factory.default, factory); assert.equal(Object.getOwnPropertyDescriptor(factory, 'default').enumerable, false); assert.equal(typeof factory({}), 'function'); }
+assert.equal(require('artplayer-plugin-asr/runtime'), require('artplayer-plugin-asr'));
+Promise.all(['artplayer-plugin-asr', 'artplayer-plugin-asr/runtime', 'artplayer-plugin-asr/legacy'].map(name => import(name))).then(([root, runtime, legacy]) => { assert.deepEqual(Object.keys(root), ['default']); assert.deepEqual(Object.keys(runtime), ['default']); assert.equal(runtime.default, root.default); assert.equal(root.default.default, root.default); assert.equal(legacy.default, require('artplayer-plugin-asr/legacy')); }).catch(error => { console.error(error); process.exitCode = 1; });`
+        : `const assert = require('node:assert/strict'); const value = require('artplayer-plugin-asr'); assert.equal(typeof value, '${plugin.version === '2.1.0' ? 'function' : 'object'}'); assert.equal(typeof (value.default || value)({}), 'function'); assert.equal(typeof value.default, '${plugin.version === '2.1.0' ? 'undefined' : 'function'}'); import('artplayer-plugin-asr').then(module => { assert.equal(typeof module.default, 'function'); assert.equal(typeof module.default({}), 'function'); }).catch(error => { console.error(error); process.exitCode = 1; });`)
+      fs.writeFileSync(path.join(output, `${plugin.label}-runtime.log`), run([runtimeFile], consumer))
+      const modes = candidate ? [...standardModes, [ts, 'node10-commonjs-no-interop'], [compat, 'node10-commonjs-no-interop']] : standardModes
+      for (const [compiler, mode] of modes) {
+        const result = { plugin: plugin.label, ...typecheck(consumer, compiler, mode, candidate) }
+        matrix.push(result)
+        writeJson(path.join(output, `${plugin.label}-${compiler.version}-${mode}.json`), result)
+        console.log(`${plugin.label} TS ${compiler.version} ${mode}: ${result.diagnostics.length} diagnostics; ${result.invalid.length} negative diagnostics`)
+      }
+    }
+    finally {
+      removeConsumer(consumer)
+    }
+  }
+  writeJson(path.join(output, 'report.json'), { suite: 'asr-isolated-package-types', introducedBy: 'PKG-ASR-04', packages, published: candidates.slice(0, -1).map(pkg => ({ label: pkg.label, archive: pkg.archive, sha256: hash(fs.readFileSync(pkg.archive)) })), matrix })
+  for (const result of matrix) {
+    const baseline = result.plugin === 'candidate' ? [] : expected.cases.find(item => item.plugin === result.plugin && item.compiler === result.compiler && item.mode === result.mode)?.diagnostics
+    assert.deepEqual(result.diagnostics, baseline, `${result.plugin} TS ${result.compiler} ${result.mode}`)
+    assert.deepEqual(result.namespace, [], `Historical ESM namespace: ${result.plugin}`)
+    if (result.plugin === 'candidate') {
+      const publishedBaseline = result.mode === 'nodenext-esm' ? expected.cases.find(item => item.plugin === 'published-2.1.0' && item.compiler === result.compiler && item.mode === result.mode).diagnostics : []
+      assert.deepEqual(result.published, publishedBaseline, `Historical direct consumer: ${result.compiler} ${result.mode}`)
+      assert.equal(result.invalid.length, 12, 'Installed declarations must reject all 12 invalid uses')
+    }
+  }
+  console.log(`ASR installed matrix verified: ${matrix.length} cases; ${output}`)
+}
+
+main().catch((error) => {
+  console.error(error)
+  process.exitCode = 1
+})
diff --git a/refactor/tasks.json b/refactor/tasks.json
index 0b70fd2f7..4440d29ba 100644
--- a/refactor/tasks.json
+++ b/refactor/tasks.json
@@ -2682,11 +2682,15 @@
         "ENG-06",
         "CORE-07"
       ],
-      "status": "todo",
+      "status": "done",
       "risk": "H",
       "deliverable": "主线程/Worklet/音频 buffer 与异步回调类型",
       "acceptance": "严格类型检查、旧消费样例通过；声明路径/导出和同步异步兼容",
-      "evidence": []
+      "evidence": [
+        "changes/2026-09-13-PKG-ASR-04-public-types.md",
+        "baselines/asr-types-validation.json",
+        "baselines/asr-type-diagnostics.json"
+      ]
     },
     {
       "id": "PKG-ASR-05",
diff --git a/scripts/typecheck.mjs b/scripts/typecheck.mjs
index 8879bdce6..9e09b89d0 100644
--- a/scripts/typecheck.mjs
+++ b/scripts/typecheck.mjs
@@ -73,6 +73,15 @@ export function runTypechecks() {
     console.log(`Strict project passed: ${relative(config)} (${result.files.length} root files)`)
   }
   for (const [compiler, mode] of [[ts, 'node10-commonjs'], [ts, 'nodenext-cjs'], [ts, 'bundler-esm'], [ts, 'nodenext-esm'], [compat, 'node10-commonjs']]) {
+    for (const fixture of ['test/types/asr-public.ts', mode === 'nodenext-esm' ? 'refactor/fixtures/consumers/asr-esm-namespace.ts' : 'refactor/fixtures/consumers/asr-published.ts']) {
+      let source = fs.readFileSync(path.join(root, fixture), 'utf8')
+      if (fixture === 'test/types/asr-public.ts' && mode === 'nodenext-esm') {
+        source = source.replace('import legacy from \'artplayer-plugin-asr\'', 'import legacyModule from \'artplayer-plugin-asr\'\nconst legacy = legacyModule.default')
+          .replace('import legacyEntry from \'artplayer-plugin-asr/legacy\'', 'import legacyEntryModule from \'artplayer-plugin-asr/legacy\'\nconst legacyEntry = legacyEntryModule.default')
+          .replace('namespace.default', 'namespace.default.default')
+      }
+      assert.deepEqual(checkConsumer(compiler, mode, source), [], `ASR consumer failed: TS ${compiler.version} ${mode}`)
+    }
     for (const fixture of ['test/types/public.ts', 'test/types/declaration-inputs.ts', 'test/types/declaration-legacy.ts', 'test/types/plugins-public.ts', 'test/types/playback-public.ts', 'test/types/chapter-options.ts', 'test/types/chapter-exports.ts', 'test/types/hls-control.ts', 'test/types/dash-control.ts', 'test/types/ads.ts', 'refactor/fixtures/consumers/ads-published.ts', 'refactor/fixtures/consumers/ads-workspace.ts', 'refactor/fixtures/consumers/dash-control-legacy.ts', 'test/types/audio-track.ts', 'test/types/language-value.ts', 'refactor/fixtures/consumers/language.ts', 'refactor/fixtures/consumers/legacy-plugin.ts']) {
       assert.deepEqual(checkConsumer(compiler, mode, fs.readFileSync(path.join(root, fixture), 'utf8')), [], `Consumer failed: TS ${compiler.version} ${mode} ${fixture}`)
     }
diff --git a/test/types/asr-public.ts b/test/types/asr-public.ts
new file mode 100644
index 000000000..317b826bf
--- /dev/null
+++ b/test/types/asr-public.ts
@@ -0,0 +1,101 @@
+import type { AsrPluginInstance, AsrPluginOption, AudioChunk, RuntimeFactory, RuntimeOption, RuntimeResult } from 'artplayer-plugin-asr'
+import type { AudioChunk as EntryChunk, RuntimeFactory as EntryFactory, RuntimeOption as EntryOption, RuntimeResult as EntryResult } from 'artplayer-plugin-asr/runtime'
+import Artplayer from 'artplayer'
+import legacy from 'artplayer-plugin-asr'
+import * as namespace from 'artplayer-plugin-asr'
+import legacyEntry from 'artplayer-plugin-asr/legacy'
+import runtime from 'artplayer-plugin-asr/runtime'
+
+type Equal<A, B> = (<T>() => T extends A ? 1 : 2) extends (<T>() => T extends B ? 1 : 2) ? true : false
+type Assert<T extends true> = T
+type RuntimeEntryTypes = Assert<Equal<[EntryChunk, EntryFactory, EntryOption, EntryResult], [AudioChunk, RuntimeFactory, RuntimeOption, RuntimeResult]>>
+
+interface HistoricalOption {
+  length?: number
+  interval?: number
+  sampleRate?: number
+  autoHideTimeout?: number
+  onAudioChunk?: (chunk: { pcm: ArrayBuffer, wav: ArrayBuffer }) => void | Promise<void>
+}
+
+interface HistoricalResult {
+  name: 'artplayerPluginAsr'
+  stop: () => void
+  hide: () => void
+  append: (subtitle: string) => void
+}
+
+type HistoricalFactory = (option?: HistoricalOption) => (art: Artplayer) => HistoricalResult
+type RootArguments = Assert<Equal<Parameters<typeof legacy>, [option?: AsrPluginOption]>>
+type RootOption = Assert<Equal<AsrPluginOption, HistoricalOption>>
+type RootResult = Assert<Equal<ReturnType<ReturnType<typeof legacy>>, AsrPluginInstance>>
+type RootShape = Assert<Equal<AsrPluginInstance, HistoricalResult>>
+type RootFactory = Assert<Equal<typeof legacy, HistoricalFactory>>
+type RootStop = Assert<Equal<ReturnType<AsrPluginInstance['stop']>, void>>
+type ChunkShape = Assert<Equal<AudioChunk, { pcm: ArrayBuffer, wav: ArrayBuffer }>>
+type PreciseArguments = Assert<Equal<Parameters<typeof runtime>, [option?: RuntimeOption]>>
+type PreciseResult = Assert<Equal<ReturnType<ReturnType<typeof runtime>>, RuntimeResult>>
+type PreciseStop = Assert<Equal<ReturnType<RuntimeResult['stop']>, Promise<void>>>
+type PreciseFactory = Assert<Equal<typeof runtime, RuntimeFactory>>
+type PreciseCallback = Assert<Equal<NonNullable<RuntimeOption['onAudioChunk']>, (chunk: AudioChunk) => string | void | null | Promise<string | void | null>>>
+
+const replacement: HistoricalFactory = (_option?: HistoricalOption) => (_art: Artplayer) => ({
+  name: 'artplayerPluginAsr',
+  stop() {},
+  hide() {},
+  append(_subtitle: string) {},
+})
+const assignToOld: HistoricalFactory = legacy
+const assignFromOld: typeof legacy = replacement
+const namespaceFactory: HistoricalFactory = namespace.default
+const explicitLegacy: HistoricalFactory = legacyEntry
+const option: AsrPluginOption = { onAudioChunk: async (_chunk: AudioChunk): Promise<void> => {} }
+const absent: Parameters<typeof legacy>[0] = undefined
+const art = new Artplayer({ container: '#player', url: '/video.mp4', plugins: [legacy(option), runtime(), legacyEntry(absent)] })
+const old = legacy(option)(art)
+const oldReturns: void[] = [old.stop(), old.hide(), old.append('Subtitle.')]
+const bareRoot: typeof legacy = replacement
+
+const runtimeOption: RuntimeOption = { length: 2, interval: 250, sampleRate: 48000, autoHideTimeout: 3000, onAudioChunk: async (chunk) => {
+  const pcm: ArrayBuffer = chunk.pcm
+  const wav: ArrayBuffer = chunk.wav
+  void [pcm, wav]
+  return 'Recognized subtitle.'
+} }
+const correct: RuntimeResult = runtime(runtimeOption)(art)
+const stopped: Promise<void> = correct.stop()
+const alias: RuntimeFactory = runtime.default.default
+const aliasResult: RuntimeResult = alias(undefined)(art)
+runtime({ onAudioChunk: () => 'Synchronous subtitle.' })
+runtime({ onAudioChunk: () => null })
+runtime({ onAudioChunk: () => undefined })
+runtime({ onAudioChunk: async () => {} })
+runtime({ onAudioChunk: async () => null })
+runtime(option)
+
+// @ts-expect-error Root options preserve the historical void/Promise<void> callback shape.
+legacy({ onAudioChunk: () => 'Only the precise entry describes returned subtitles.' })
+// @ts-expect-error Root stop extraction remains void for historical replacement factories.
+const rootPromise: Promise<void> = old.stop()
+// @ts-expect-error The legacy factory type must not demand or expose a self default alias.
+bareRoot.default()
+// @ts-expect-error Accurate stop is asynchronous.
+const synchronous: void = correct.stop()
+// @ts-expect-error Accurate result replacements cannot return void from stop.
+const wrongStop: RuntimeResult = { name: 'artplayerPluginAsr', stop() {}, hide() {}, append(_text: string) {} }
+// @ts-expect-error Callback results do not include booleans.
+runtime({ onAudioChunk: () => true })
+// @ts-expect-error Async callback results do not include booleans.
+runtime({ onAudioChunk: async () => true })
+// @ts-expect-error Options use numeric sample rates.
+runtime({ sampleRate: '16000' })
+// @ts-expect-error Unknown options remain rejected.
+runtime({ unknown: true })
+// @ts-expect-error Registration requires an Artplayer instance.
+runtime()()
+// @ts-expect-error Append accepts a string.
+correct.append(123)
+// @ts-expect-error PCM is an ArrayBuffer rather than encoded text.
+const invalidChunk: AudioChunk = { pcm: 'raw audio', wav: new ArrayBuffer(4) }
+void [assignToOld, assignFromOld, namespaceFactory, explicitLegacy, oldReturns, stopped, aliasResult, rootPromise, synchronous, wrongStop, invalidChunk]
+export type { ChunkShape, PreciseArguments, PreciseCallback, PreciseFactory, PreciseResult, PreciseStop, RootArguments, RootFactory, RootOption, RootResult, RootShape, RootStop, RuntimeEntryTypes }
diff --git a/test/types/asr-source.ts b/test/types/asr-source.ts
new file mode 100644
index 000000000..269069a26
--- /dev/null
+++ b/test/types/asr-source.ts
@@ -0,0 +1,21 @@
+import type { AudioChunk, Factory, RuntimeFactory, RuntimeOption, RuntimeResult } from 'artplayer-plugin-asr'
+import type source from '../../packages/artplayer-plugin-asr/src/index'
+import type { AsrOptions, AsrResult, AudioChunk as SourceChunk } from '../../packages/artplayer-plugin-asr/src/types'
+
+declare const implementation: typeof source
+declare const runtimeFactory: RuntimeFactory
+declare const runtimeOption: RuntimeOption
+declare const sourceResult: AsrResult
+declare const publicResult: RuntimeResult
+declare const sourceChunk: SourceChunk
+declare const publicChunk: AudioChunk
+
+const historical: Factory = implementation
+const accurate: Factory = runtimeFactory
+const runtimeCall: (option?: RuntimeOption) => ReturnType<RuntimeFactory> = implementation
+const sourceOption: AsrOptions = runtimeOption
+const resultToPublic: RuntimeResult = sourceResult
+const resultToSource: AsrResult = publicResult
+const chunkToPublic: AudioChunk = sourceChunk
+const chunkToSource: SourceChunk = publicChunk
+void [historical, accurate, runtimeCall, sourceOption, resultToPublic, resultToSource, chunkToPublic, chunkToSource]