diff --git a/.eslintignore b/.eslintignore
index 195691c9..4dab6e9c 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,7 +1,9 @@
-/dist
+**/dist
 node_modules
 /lib/typings
 .eslintrc.js
 /example
 /test/.cgenbuild
 /test/CMakeFiles
+/packages/runtime/lib
+/packages/emnapi/lib
diff --git a/.gitignore b/.gitignore
index 6671bc0e..ca02c7b6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,7 +3,7 @@
 /test/cmake_install.cmake
 /test/Makefile
 /test/CMakefiles
-/node_modules
+node_modules
 /include/node_api_full.h
 /dist
 package-lock.json
diff --git a/.npmignore b/.npmignore
deleted file mode 100644
index 2d1d9929..00000000
--- a/.npmignore
+++ /dev/null
@@ -1,17 +0,0 @@
-node_modules
-package-lock.json
-tsconfig*
-.vscode
-.cgenbuild
-/example
-/dist/library_napi_runtime*
-/lib
-/docs
-/script
-/test
-.eslint*
-.gitignore
-cgen.config.js
-README_*
-.github
-emsdk-cache
diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
index ac78eba3..4ac9e2f2 100644
--- a/.vscode/c_cpp_properties.json
+++ b/.vscode/c_cpp_properties.json
@@ -2,7 +2,7 @@
   "env": {
     "includePath": [
       "${default}",
-      "${workspaceFolder}/include"
+      "${workspaceFolder}/packages/emnapi/include"
     ],
     "defines": ["NAPI_DISABLE_CPP_EXCEPTIONS", "NODE_ADDON_API_ENABLE_MAYBE"],
     "clPath": "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.28.29910\\bin\\Hostx64\\x64\\cl.exe",
diff --git a/.vscode/launch.json b/.vscode/launch.json
index 3e2831e1..4fb8aec6 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -6,7 +6,7 @@
       "request": "launch",
       "name": "Launch Program",
       "runtimeArgs": ["--expose-gc"],
-      "program": "${workspaceFolder}/test/emnapi/emnapi.test.js",
+      "program": "${workspaceFolder}/packages/test/emnapi/emnapi.test.js",
       "args": []
     },
     {
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 18ed79c2..2f415ff2 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,5 +1,5 @@
 {
   "files.associations": {
-    "api-extractor.json": "jsonc"
+    "**/api-extractor.json": "jsonc"
   }
 }
diff --git a/LICENSE b/LICENSE
index 72f7277c..05a59441 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2021 Toyobayashi
+Copyright (c) 2021-present Toyobayashi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/example/node_modules/@tybys/emnapi/CMakeLists.txt b/example/node_modules/@tybys/emnapi/CMakeLists.txt
index 70bb1732..fd44bab3 100644
--- a/example/node_modules/@tybys/emnapi/CMakeLists.txt
+++ b/example/node_modules/@tybys/emnapi/CMakeLists.txt
@@ -2,4 +2,4 @@ cmake_minimum_required(VERSION 3.9)
 
 project(emnapifake)
 
-add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/../../../.." "${CMAKE_CURRENT_BINARY_DIR}/real")
+add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/../../../../packages/emnapi" "${CMAKE_CURRENT_BINARY_DIR}/real")
diff --git a/lib/runtime/tsconfig.json b/lib/runtime/tsconfig.json
deleted file mode 100644
index ace71520..00000000
--- a/lib/runtime/tsconfig.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-  "extends": "../../tsconfig.base.json",
-  "compilerOptions": {
-    "module": "ESNext",
-    "downlevelIteration": true,
-    "declaration": true,
-    "removeComments": true,
-    "types": [],
-    "declarationDir": "../../dist/runtime",
-    "emitDeclarationOnly": true,
-    "lib": [
-      "ES5",
-      "ES2015",
-      "ES2020.BigInt",
-      "ES2021.WeakRef",
-      "DOM"
-    ]
-  },
-  "include": [
-    "../typings/napi.d.ts",
-    "./**/*.ts"
-  ]
-}
diff --git a/package.json b/package.json
index 5673a79b..8b8e266e 100644
--- a/package.json
+++ b/package.json
@@ -1,38 +1,11 @@
 {
-  "name": "@tybys/emnapi",
+  "private": true,
   "version": "0.10.0",
-  "description": "Node-API implementation for Emscripten",
-  "main": "index.js",
-  "typings": "index.d.ts",
   "scripts": {
-    "clean": "cd test && cgen clean",
-    "build:runtime": "tsc -p ./lib/runtime/tsconfig.json && node ./script/build-runtime.js",
-    "build:lib": "npm run build:runtime && tsc && node ./script/build.js",
+    "build": "cd ./packages/runtime&&npm run build&&cd ../emnapi&&npm run build",
     "release": "npm run build:runtime && tsc && node ./script/build.js&&node ./script/release.js",
-    "prepare": "npm run build:lib",
-    "rebuild": "npm run build:lib && cd test && cgen rebuild -e -d",
-    "rebuild:r": "npm run build:lib && cd test && cgen rebuild -e",
-    "rebuild:n": "cd test && cgen rebuild -d",
-    "rebuild:nr": "cd test && cgen rebuild",
-    "lint": "eslint {lib/**/*.ts,test/**/*.ts}",
-    "test": "node ./script/test.js",
-    "test:r": "cross-env NODE_ENV=production node ./script/test.js",
-    "test:n": "cross-env EMNAPI_TEST_NATIVE=1 node ./script/test.js",
-    "test:nr": "cross-env EMNAPI_TEST_NATIVE=1 NODE_ENV=production node ./script/test.js"
+    "lint": "eslint packages/**/*.ts"
   },
-  "keywords": [
-    "emscripten",
-    "wasm",
-    "emcc",
-    "webassembly",
-    "bindings",
-    "c",
-    "c++",
-    "cpp",
-    "n-api",
-    "napi",
-    "node-addon-api"
-  ],
   "author": "toyobayashi",
   "repository": {
     "type": "git",
@@ -47,28 +20,20 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "@microsoft/api-extractor": "^7.19.4",
-    "@rollup/plugin-node-resolve": "^13.1.3",
-    "@rollup/plugin-typescript": "^8.3.0",
-    "@tybys/cgen": "^0.11.1",
     "@tybys/cross-zip": "^3.1.0",
     "@types/fs-extra": "^9.0.13",
     "@types/node": "^16.11.21",
     "@typescript-eslint/eslint-plugin": "^5.8.1",
     "@typescript-eslint/parser": "^5.8.1",
-    "chalk": "^4.1.1",
-    "cross-env": "^7.0.3",
     "eslint": "^8.5.0",
     "eslint-config-standard-with-typescript": "^21.0.1",
     "eslint-plugin-import": "^2.25.3",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^6.0.0",
     "fs-extra": "^10.0.0",
-    "glob": "^7.2.0",
-    "node-addon-api": "4.3.0",
-    "rollup": "^2.66.1",
-    "rollup-plugin-terser": "^7.0.2",
-    "tslib": "^2.3.1",
-    "typescript": "~4.5.2"
-  }
+    "typescript": "~4.5.5"
+  },
+  "workspaces": [
+    "./packages/*"
+  ]
 }
diff --git a/packages/emnapi/.gitignore b/packages/emnapi/.gitignore
new file mode 100644
index 00000000..bd07d4e1
--- /dev/null
+++ b/packages/emnapi/.gitignore
@@ -0,0 +1,2 @@
+node_modules
+/dist
diff --git a/CMakeLists.txt b/packages/emnapi/CMakeLists.txt
similarity index 100%
rename from CMakeLists.txt
rename to packages/emnapi/CMakeLists.txt
diff --git a/packages/emnapi/LICENSE b/packages/emnapi/LICENSE
new file mode 100644
index 00000000..05a59441
--- /dev/null
+++ b/packages/emnapi/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021-present Toyobayashi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/packages/emnapi/README.md
similarity index 100%
rename from README.md
rename to packages/emnapi/README.md
diff --git a/README_CN.md b/packages/emnapi/README_CN.md
similarity index 100%
rename from README_CN.md
rename to packages/emnapi/README_CN.md
diff --git a/include/common.h b/packages/emnapi/include/common.h
similarity index 100%
rename from include/common.h
rename to packages/emnapi/include/common.h
diff --git a/include/emnapi.h b/packages/emnapi/include/emnapi.h
similarity index 100%
rename from include/emnapi.h
rename to packages/emnapi/include/emnapi.h
diff --git a/include/js_native_api.h b/packages/emnapi/include/js_native_api.h
similarity index 100%
rename from include/js_native_api.h
rename to packages/emnapi/include/js_native_api.h
diff --git a/include/js_native_api_types.h b/packages/emnapi/include/js_native_api_types.h
similarity index 100%
rename from include/js_native_api_types.h
rename to packages/emnapi/include/js_native_api_types.h
diff --git a/include/napi-inl.h b/packages/emnapi/include/napi-inl.h
similarity index 100%
rename from include/napi-inl.h
rename to packages/emnapi/include/napi-inl.h
diff --git a/include/napi.h b/packages/emnapi/include/napi.h
similarity index 100%
rename from include/napi.h
rename to packages/emnapi/include/napi.h
diff --git a/include/node_api.h b/packages/emnapi/include/node_api.h
similarity index 100%
rename from include/node_api.h
rename to packages/emnapi/include/node_api.h
diff --git a/index.d.ts b/packages/emnapi/index.d.ts
similarity index 100%
rename from index.d.ts
rename to packages/emnapi/index.d.ts
diff --git a/index.js b/packages/emnapi/index.js
similarity index 100%
rename from index.js
rename to packages/emnapi/index.js
diff --git a/packages/emnapi/package.json b/packages/emnapi/package.json
new file mode 100644
index 00000000..7ea5e461
--- /dev/null
+++ b/packages/emnapi/package.json
@@ -0,0 +1,36 @@
+{
+  "name": "@tybys/emnapi",
+  "version": "0.10.0",
+  "description": "Node-API implementation for Emscripten",
+  "main": "index.js",
+  "devDependencies": {},
+  "scripts": {
+    "build": "tsc && node ./script/build.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/toyobayashi/emnapi.git"
+  },
+  "keywords": [
+    "emscripten",
+    "wasm",
+    "emcc",
+    "webassembly",
+    "bindings",
+    "c",
+    "c++",
+    "cpp",
+    "n-api",
+    "napi",
+    "node-addon-api"
+  ],
+  "author": "toyobayashi",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/toyobayashi/emnapi/issues"
+  },
+  "homepage": "https://github.com/toyobayashi/emnapi#readme",
+  "publishConfig": {
+    "access": "public"
+  }
+}
diff --git a/packages/emnapi/script/build.js b/packages/emnapi/script/build.js
new file mode 100644
index 00000000..481ce63f
--- /dev/null
+++ b/packages/emnapi/script/build.js
@@ -0,0 +1,72 @@
+const fs = require('fs')
+const path = require('path')
+
+const {
+  runtimeOut
+} = require('../../runtime/script/build.js')
+
+async function build () {
+  const libTsconfigPath = path.join(__dirname, '../tsconfig.json')
+  const libTsconfig = JSON.parse(fs.readFileSync(libTsconfigPath, 'utf8'))
+
+  const libOut = path.join(path.dirname(libTsconfigPath), libTsconfig.compilerOptions.outFile)
+
+  const runtimeCode = fs.readFileSync(runtimeOut, 'utf8')
+  const libCode = fs.readFileSync(libOut, 'utf8')
+
+  fs.writeFileSync(libOut,
+    libCode
+      .replace('__EMNAPI_RUNTIME_REPLACE__', `'${runtimeCode.replace(/\\/g, '\\\\').replace(/\r?\n/g, '\\n').replace(/'/g, "\\'")}'`)
+      .replace('__EMNAPI_RUNTIME_INIT__;', '')
+      .replace(/(makeDynCall\(.*?\))/g, '{{{ $1 }}}')
+      /* .replace(/(makeMalloc\(.*?\))/g, '{{{ $1 }}}') */,
+    'utf8'
+  )
+
+  fs.writeFileSync(path.join(path.dirname(libOut), path.basename(libOut, '.js') + '_no_runtime.js'),
+    libCode
+      .replace('__EMNAPI_RUNTIME_REPLACE__', '""')
+      .replace('__EMNAPI_RUNTIME_INIT__;', `
+        (function () {
+          if ('emnapiRuntime' in Module) {
+            emnapi = Module.emnapiRuntime;
+          }
+          if (!emnapi && typeof require === 'function') {
+            try {
+              emnapi = require('@tybys/emnapi-runtime')
+            } catch (_) {}
+          }
+          if (!emnapi) {
+            emnapi = (function () {
+              let g;
+              g = (function () { return this })();
+      
+              try {
+                g = g || new Function('return this')();
+              } catch (_) {
+                if (typeof globalThis !== 'undefined') return globalThis;
+                if (typeof __webpack_public_path__ === 'undefined') {
+                  if (typeof global !== 'undefined') return global;
+                }
+                if (typeof window !== 'undefined') return window;
+                if (typeof self !== 'undefined') return self;
+              }
+      
+              return g;
+            })().emnapi;
+          }
+        })();`)
+      .replace(/(makeDynCall\(.*?\))/g, '{{{ $1 }}}')
+      /* .replace(/(makeMalloc\(.*?\))/g, '{{{ $1 }}}') */,
+    'utf8'
+  )
+}
+
+exports.build = build
+
+if (module === require.main) {
+  build().catch(err => {
+    console.error(err)
+    process.exit(1)
+  })
+}
diff --git a/src/emnapi.c b/packages/emnapi/src/emnapi.c
similarity index 100%
rename from src/emnapi.c
rename to packages/emnapi/src/emnapi.c
diff --git a/lib/emnapi.ts b/packages/emnapi/src/emnapi.ts
similarity index 100%
rename from lib/emnapi.ts
rename to packages/emnapi/src/emnapi.ts
diff --git a/lib/env.ts b/packages/emnapi/src/env.ts
similarity index 100%
rename from lib/env.ts
rename to packages/emnapi/src/env.ts
diff --git a/lib/error.ts b/packages/emnapi/src/error.ts
similarity index 100%
rename from lib/error.ts
rename to packages/emnapi/src/error.ts
diff --git a/lib/function.ts b/packages/emnapi/src/function.ts
similarity index 100%
rename from lib/function.ts
rename to packages/emnapi/src/function.ts
diff --git a/lib/init.ts b/packages/emnapi/src/init.ts
similarity index 100%
rename from lib/init.ts
rename to packages/emnapi/src/init.ts
diff --git a/lib/internal.ts b/packages/emnapi/src/internal.ts
similarity index 100%
rename from lib/internal.ts
rename to packages/emnapi/src/internal.ts
diff --git a/lib/life.ts b/packages/emnapi/src/life.ts
similarity index 100%
rename from lib/life.ts
rename to packages/emnapi/src/life.ts
diff --git a/lib/memory.ts b/packages/emnapi/src/memory.ts
similarity index 100%
rename from lib/memory.ts
rename to packages/emnapi/src/memory.ts
diff --git a/lib/promise.ts b/packages/emnapi/src/promise.ts
similarity index 100%
rename from lib/promise.ts
rename to packages/emnapi/src/promise.ts
diff --git a/lib/property.ts b/packages/emnapi/src/property.ts
similarity index 100%
rename from lib/property.ts
rename to packages/emnapi/src/property.ts
diff --git a/lib/register.ts b/packages/emnapi/src/register.ts
similarity index 100%
rename from lib/register.ts
rename to packages/emnapi/src/register.ts
diff --git a/lib/script.ts b/packages/emnapi/src/script.ts
similarity index 100%
rename from lib/script.ts
rename to packages/emnapi/src/script.ts
diff --git a/lib/typings/compiler.d.ts b/packages/emnapi/src/typings/compiler.d.ts
similarity index 100%
rename from lib/typings/compiler.d.ts
rename to packages/emnapi/src/typings/compiler.d.ts
diff --git a/lib/typings/ctype.d.ts b/packages/emnapi/src/typings/ctype.d.ts
similarity index 90%
rename from lib/typings/ctype.d.ts
rename to packages/emnapi/src/typings/ctype.d.ts
index e53741f8..d7b424c6 100644
--- a/lib/typings/ctype.d.ts
+++ b/packages/emnapi/src/typings/ctype.d.ts
@@ -1,4 +1,6 @@
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 declare type Pointer<T> = number
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 declare type PointerPointer<T> = number
 declare type FunctionPointer<T extends (...args: any[]) => any> = Pointer<T>
 declare type Const<T> = T
diff --git a/lib/typings/runtime.d.ts b/packages/emnapi/src/typings/runtime.d.ts
similarity index 97%
rename from lib/typings/runtime.d.ts
rename to packages/emnapi/src/typings/runtime.d.ts
index 972c2d0d..2eaec702 100644
--- a/lib/typings/runtime.d.ts
+++ b/packages/emnapi/src/typings/runtime.d.ts
@@ -39,8 +39,8 @@ declare interface ICallbackInfo {
   _this: any
   _data: void_p
   _length: number
-  _args: any[],
-  _newTarget: Function | undefined,
+  _args: any[]
+  _newTarget: Function | undefined
   _isConstructCall: boolean
 }
 
diff --git a/lib/util.ts b/packages/emnapi/src/util.ts
similarity index 100%
rename from lib/util.ts
rename to packages/emnapi/src/util.ts
diff --git a/lib/value-operation.ts b/packages/emnapi/src/value-operation.ts
similarity index 100%
rename from lib/value-operation.ts
rename to packages/emnapi/src/value-operation.ts
diff --git a/lib/value/convert2c.ts b/packages/emnapi/src/value/convert2c.ts
similarity index 100%
rename from lib/value/convert2c.ts
rename to packages/emnapi/src/value/convert2c.ts
diff --git a/lib/value/convert2napi.ts b/packages/emnapi/src/value/convert2napi.ts
similarity index 100%
rename from lib/value/convert2napi.ts
rename to packages/emnapi/src/value/convert2napi.ts
diff --git a/lib/value/create.ts b/packages/emnapi/src/value/create.ts
similarity index 100%
rename from lib/value/create.ts
rename to packages/emnapi/src/value/create.ts
diff --git a/lib/value/global.ts b/packages/emnapi/src/value/global.ts
similarity index 100%
rename from lib/value/global.ts
rename to packages/emnapi/src/value/global.ts
diff --git a/lib/version.ts b/packages/emnapi/src/version.ts
similarity index 100%
rename from lib/version.ts
rename to packages/emnapi/src/version.ts
diff --git a/lib/wrap.ts b/packages/emnapi/src/wrap.ts
similarity index 100%
rename from lib/wrap.ts
rename to packages/emnapi/src/wrap.ts
diff --git a/tsconfig.base.json b/packages/emnapi/tsconfig.base.json
similarity index 100%
rename from tsconfig.base.json
rename to packages/emnapi/tsconfig.base.json
diff --git a/tsconfig.prod.json b/packages/emnapi/tsconfig.json
similarity index 53%
rename from tsconfig.prod.json
rename to packages/emnapi/tsconfig.json
index 382e881f..98512011 100644
--- a/tsconfig.prod.json
+++ b/packages/emnapi/tsconfig.json
@@ -1,10 +1,9 @@
 {
   "extends": "./tsconfig.base.json",
   "compilerOptions": {
-    "module": "ESNext",
-    "downlevelIteration": true,
-    "removeComments": true,
-    "declaration": false,
+    "outFile": "./dist/library_napi.js",
+    "importHelpers": false,
+    "noEmitHelpers": true,
     "types": [],
     "lib": [
       "ES5",
@@ -15,7 +14,8 @@
     ]
   },
   "include": [
-    "./lib/typings/napi.d.ts",
-    "./lib/runtime/**/*.ts"
+    "../runtime/dist/emnapi.d.ts",
+    "../runtime/src/napi.d.ts",
+    "./src/**/*.ts"
   ]
 }
diff --git a/packages/runtime/.gitignore b/packages/runtime/.gitignore
new file mode 100644
index 00000000..206bfb24
--- /dev/null
+++ b/packages/runtime/.gitignore
@@ -0,0 +1,3 @@
+/lib
+node_modules
+/dist
diff --git a/packages/runtime/.npmignore b/packages/runtime/.npmignore
new file mode 100644
index 00000000..14001ca6
--- /dev/null
+++ b/packages/runtime/.npmignore
@@ -0,0 +1,9 @@
+.vscode
+node_modules
+/script
+/lib/**/*.d.ts
+/src
+.gitignore
+.npmignore
+api-extractor.json
+tsconfig.json
diff --git a/packages/runtime/LICENSE b/packages/runtime/LICENSE
new file mode 100644
index 00000000..05a59441
--- /dev/null
+++ b/packages/runtime/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021-present Toyobayashi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/lib/runtime/api-extractor.json b/packages/runtime/api-extractor.json
similarity index 90%
rename from lib/runtime/api-extractor.json
rename to packages/runtime/api-extractor.json
index bd585884..c2f65d7b 100644
--- a/lib/runtime/api-extractor.json
+++ b/packages/runtime/api-extractor.json
@@ -4,14 +4,14 @@
   // "extends": "./shared/api-extractor-base.json"
   // "extends": "my-package/include/api-extractor-base.json"
 
-  "projectFolder": "../..",
+  "projectFolder": ".",
 
-  "mainEntryPointFilePath": "<projectFolder>/dist/runtime/index.d.ts",
+  "mainEntryPointFilePath": "<projectFolder>/lib/index.d.ts",
 
   "bundledPackages": [],
 
   "compiler": {
-    "tsconfigFilePath": "<projectFolder>/lib/runtime/tsconfig.json"
+    "tsconfigFilePath": "<projectFolder>/tsconfig.json"
 
     // "overrideTsconfig": {
     //   . . .
@@ -43,7 +43,7 @@
 
     // "betaTrimmedFilePath": "<projectFolder>/dist/<unscopedPackageName>-beta.d.ts",
 
-    "publicTrimmedFilePath": "<projectFolder>/dist/library_napi_runtime.d.ts"
+    "publicTrimmedFilePath": "<projectFolder>/dist/emnapi.d.ts"
 
     // "omitTrimmingComments": true
   },
diff --git a/packages/runtime/index.js b/packages/runtime/index.js
new file mode 100644
index 00000000..1b71a27d
--- /dev/null
+++ b/packages/runtime/index.js
@@ -0,0 +1,5 @@
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./dist/emnapi.min.js')
+} else {
+  module.exports = require('./dist/emnapi.js')
+}
diff --git a/packages/runtime/package.json b/packages/runtime/package.json
new file mode 100644
index 00000000..5e5a39e0
--- /dev/null
+++ b/packages/runtime/package.json
@@ -0,0 +1,32 @@
+{
+  "name": "@tybys/emnapi-runtime",
+  "version": "0.10.0",
+  "description": "emnapi runtime",
+  "main": "index.js",
+  "module": "./lib/index.js",
+  "typings": "./dist/emnapi.d.ts",
+  "devDependencies": {
+    "@microsoft/api-extractor": "^7.19.4",
+    "@rollup/plugin-node-resolve": "^13.1.3",
+    "rollup": "^2.66.1",
+    "rollup-plugin-terser": "^7.0.2",
+    "tslib": "^2.3.1"
+  },
+  "scripts": {
+    "build": "tsc -p ./tsconfig.json && node ./script/build.js",
+    "prepare": "npm run build"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/toyobayashi/emnapi.git"
+  },
+  "author": "toyobayashi",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/toyobayashi/emnapi/issues"
+  },
+  "homepage": "https://github.com/toyobayashi/emnapi#readme",
+  "publishConfig": {
+    "access": "public"
+  }
+}
diff --git a/packages/runtime/script/build.js b/packages/runtime/script/build.js
new file mode 100644
index 00000000..65a4d143
--- /dev/null
+++ b/packages/runtime/script/build.js
@@ -0,0 +1,97 @@
+const path = require('path')
+const fs = require('fs-extra')
+const rollup = require('rollup')
+const rollupNodeResolve = require('@rollup/plugin-node-resolve').default
+const rollupTerser = require('rollup-plugin-terser').terser
+const runtimeOut = path.join(__dirname, '../dist/library_napi_runtime.js')
+
+function build () {
+  const {
+    Extractor,
+    ExtractorConfig
+  } = require('@microsoft/api-extractor')
+  const apiExtractorJsonPath = path.join(__dirname, '../api-extractor.json')
+  const extractorConfig = ExtractorConfig.loadFileAndPrepare(apiExtractorJsonPath)
+  const extractorResult = Extractor.invoke(extractorConfig, {
+    localBuild: true,
+    showVerboseMessages: true
+  })
+  if (extractorResult.succeeded) {
+    console.log('API Extractor completed successfully')
+  } else {
+    const errmsg = `API Extractor completed with ${extractorResult.errorCount} errors and ${extractorResult.warningCount} warnings`
+    return Promise.reject(new Error(errmsg))
+  }
+
+  const runtimeDts = extractorConfig.publicTrimmedFilePath
+
+  fs.appendFileSync(runtimeDts, '\nexport as namespace emnapi;\n', 'utf8')
+
+  /**
+   * @param {boolean=} minify
+   * @returns {rollup.RollupOptions}
+   */
+  function createInput (minify) {
+    return {
+      input: path.join(__dirname, '../lib/index.js'),
+      plugins: [
+        rollupNodeResolve({
+          mainFields: ['module', 'main']
+        }),
+        ...(minify
+          ? [
+              rollupTerser({
+                compress: true,
+                mangle: true,
+                format: {
+                  comments: false
+                }
+              })
+            ]
+          : [])
+      ]
+    }
+  }
+
+  return Promise.all(([
+    {
+      input: createInput(false),
+      output: {
+        file: runtimeOut,
+        format: 'iife',
+        name: 'emnapi',
+        exports: 'named'
+      }
+    },
+    {
+      input: createInput(false),
+      output: {
+        file: path.join(path.dirname(runtimeOut), 'emnapi.js'),
+        format: 'umd',
+        name: 'emnapi',
+        exports: 'named'
+      }
+    },
+    {
+      input: createInput(true),
+      output: {
+        file: path.join(path.dirname(runtimeOut), 'emnapi.min.js'),
+        format: 'umd',
+        name: 'emnapi',
+        exports: 'named'
+      }
+    }
+  ]).map(conf => {
+    return rollup.rollup(conf.input).then(bundle => bundle.write(conf.output))
+  }))
+}
+
+exports.build = build
+exports.runtimeOut = runtimeOut
+
+if (module === require.main) {
+  build().catch(err => {
+    console.error(err)
+    process.exit(1)
+  })
+}
diff --git a/lib/runtime/Deferred.ts b/packages/runtime/src/Deferred.ts
similarity index 100%
rename from lib/runtime/Deferred.ts
rename to packages/runtime/src/Deferred.ts
diff --git a/lib/runtime/Handle.ts b/packages/runtime/src/Handle.ts
similarity index 100%
rename from lib/runtime/Handle.ts
rename to packages/runtime/src/Handle.ts
diff --git a/lib/runtime/HandleScope.ts b/packages/runtime/src/HandleScope.ts
similarity index 100%
rename from lib/runtime/HandleScope.ts
rename to packages/runtime/src/HandleScope.ts
diff --git a/lib/runtime/LinkedList.ts b/packages/runtime/src/LinkedList.ts
similarity index 100%
rename from lib/runtime/LinkedList.ts
rename to packages/runtime/src/LinkedList.ts
diff --git a/lib/runtime/Reference.ts b/packages/runtime/src/Reference.ts
similarity index 100%
rename from lib/runtime/Reference.ts
rename to packages/runtime/src/Reference.ts
diff --git a/lib/runtime/Store.ts b/packages/runtime/src/Store.ts
similarity index 100%
rename from lib/runtime/Store.ts
rename to packages/runtime/src/Store.ts
diff --git a/lib/runtime/env.ts b/packages/runtime/src/env.ts
similarity index 100%
rename from lib/runtime/env.ts
rename to packages/runtime/src/env.ts
diff --git a/lib/runtime/index.ts b/packages/runtime/src/index.ts
similarity index 100%
rename from lib/runtime/index.ts
rename to packages/runtime/src/index.ts
diff --git a/lib/typings/napi.d.ts b/packages/runtime/src/napi.d.ts
similarity index 94%
rename from lib/typings/napi.d.ts
rename to packages/runtime/src/napi.d.ts
index dc491980..2dcc4aad 100644
--- a/lib/typings/napi.d.ts
+++ b/packages/runtime/src/napi.d.ts
@@ -1,5 +1,3 @@
-/// <reference path="ctype.d.ts" />
-
 declare type napi_env = Pointer<unknown>
 
 declare type napi_value = Pointer<unknown>
@@ -16,8 +14,8 @@ declare type napi_callback = FunctionPointer<(env: napi_env, info: napi_callback
 declare interface napi_extended_error_info {
   error_message: const_char_p
   engine_reserved: void_p
-  engine_error_code: uint32_t;
-  error_code: number;
+  engine_error_code: uint32_t
+  error_code: number
 }
 
 declare interface napi_property_descriptor {
diff --git a/lib/runtime/type.ts b/packages/runtime/src/type.ts
similarity index 100%
rename from lib/runtime/type.ts
rename to packages/runtime/src/type.ts
diff --git a/lib/runtime/util.ts b/packages/runtime/src/util.ts
similarity index 100%
rename from lib/runtime/util.ts
rename to packages/runtime/src/util.ts
diff --git a/packages/runtime/tsconfig.json b/packages/runtime/tsconfig.json
new file mode 100644
index 00000000..bb7867ae
--- /dev/null
+++ b/packages/runtime/tsconfig.json
@@ -0,0 +1,36 @@
+{
+  "compilerOptions": {
+    "target": "ES5",
+    "module": "ESNext",
+    "noImplicitAny": true,
+    "noImplicitReturns": true,
+    "noImplicitThis": true,
+    "noImplicitUseStrict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "strictNullChecks": true,
+    "strictPropertyInitialization": true,
+    "strictBindCallApply": true,
+    "strictFunctionTypes": true,
+    "downlevelIteration": true,
+    "noEmitHelpers": true,
+    "importHelpers": true,
+    "declaration": true,
+    "outDir": "./lib",
+    "removeComments": true,
+    "paths": {
+      "tslib" : ["./node_modules/tslib/tslib.d.ts"]
+    },
+    "lib": [
+      "ES5",
+      "ES2015",
+      "ES2020.BigInt",
+      "ES2021.WeakRef",
+      "DOM"
+    ]
+  },
+  "include": [
+    "../emnapi/src/typings/ctype.d.ts",
+    "./src/**/*.ts"
+  ]
+}
diff --git a/packages/test/.gitignore b/packages/test/.gitignore
new file mode 100644
index 00000000..22f110fd
--- /dev/null
+++ b/packages/test/.gitignore
@@ -0,0 +1,4 @@
+.cgenbuild
+node_modules
+/emnapi
+/CMakeLists.txt
diff --git a/test/arg/arg.test.js b/packages/test/arg/arg.test.js
similarity index 100%
rename from test/arg/arg.test.js
rename to packages/test/arg/arg.test.js
diff --git a/test/arg/binding.c b/packages/test/arg/binding.c
similarity index 100%
rename from test/arg/binding.c
rename to packages/test/arg/binding.c
diff --git a/test/array/array.test.js b/packages/test/array/array.test.js
similarity index 100%
rename from test/array/array.test.js
rename to packages/test/array/array.test.js
diff --git a/test/array/binding.c b/packages/test/array/binding.c
similarity index 100%
rename from test/array/binding.c
rename to packages/test/array/binding.c
diff --git a/test/bigint/bigint.test.js b/packages/test/bigint/bigint.test.js
similarity index 100%
rename from test/bigint/bigint.test.js
rename to packages/test/bigint/bigint.test.js
diff --git a/test/bigint/binding.c b/packages/test/bigint/binding.c
similarity index 100%
rename from test/bigint/binding.c
rename to packages/test/bigint/binding.c
diff --git a/test/callback/binding.c b/packages/test/callback/binding.c
similarity index 100%
rename from test/callback/binding.c
rename to packages/test/callback/binding.c
diff --git a/test/callback/callback.test.js b/packages/test/callback/callback.test.js
similarity index 100%
rename from test/callback/callback.test.js
rename to packages/test/callback/callback.test.js
diff --git a/packages/test/cgen.config.js b/packages/test/cgen.config.js
new file mode 100644
index 00000000..488a39da
--- /dev/null
+++ b/packages/test/cgen.config.js
@@ -0,0 +1,108 @@
+module.exports = function (_options, { isDebug, isEmscripten }) {
+  const compilerFlags = isEmscripten
+    ? [
+        // ...(isDebug ? ['-sDISABLE_EXCEPTION_CATCHING=0'] : [])
+      ]
+    : []
+
+  const linkerFlags = isEmscripten
+    ? [
+        // "-sEXPORTED_FUNCTIONS=['_malloc','_free']",
+        '-sALLOW_MEMORY_GROWTH=1',
+        ...(isDebug ? ['-sSAFE_HEAP=1'/* , '-sDISABLE_EXCEPTION_CATCHING=0' */] : [])
+      ]
+    : []
+
+  const includePaths = isEmscripten
+    ? ['../emnapi/include']
+    : [`${require('path').join(require('os').homedir(), 'AppData/Local/node-gyp/Cache', process.versions.node, 'include/node')}`, '../node_modules/node-addon-api']
+
+  const createTarget = (name, sources, needEntry) => ({
+    name: name,
+    type: isEmscripten ? 'exe' : 'node',
+    sources: [...(needEntry ? (sources.push('./entry_point.c'), sources) : sources)],
+    emwrap: {
+      exports: ['emnapi']
+    },
+    includePaths,
+    libs: ['testcommon', ...(isEmscripten ? ['emnapi'] : [])],
+    compileOptions: [...compilerFlags],
+    // eslint-disable-next-line no-template-curly-in-string
+    linkOptions: [...linkerFlags]
+  })
+
+  const createNodeAddonApiTarget = (name, sources) => ({
+    name: name,
+    type: isEmscripten ? 'exe' : 'node',
+    sources: [...sources],
+    emwrap: {
+      exports: ['emnapi']
+    },
+    includePaths,
+    libs: [...(isEmscripten ? ['emnapi'] : [])],
+    defines: ['NAPI_DISABLE_CPP_EXCEPTIONS', 'NODE_ADDON_API_ENABLE_MAYBE'],
+    compileOptions: [...compilerFlags],
+    // eslint-disable-next-line no-template-curly-in-string
+    linkOptions: [...linkerFlags]
+  })
+
+  return {
+    project: 'emnapitest',
+    // dependencies: isEmscripten ? { '../emnapi': { EMNAPI_LIB_NO_RUNTIME: 'ON' } } : {},
+    targets: [
+      ...(isEmscripten
+        ? [{
+            type: 'lib',
+            name: 'emnapi',
+            sources: ['../emnapi/src/emnapi.c'],
+            includePaths,
+            compileOptions: [...compilerFlags],
+            linkOptions: [...linkerFlags],
+            publicLinkOptions: [`--js-library=${require('path').join(__dirname, '../emnapi/dist/library_napi_no_runtime.js')}`]
+          }]
+        : []),
+      {
+        type: 'lib',
+        name: 'testcommon',
+        sources: ['./common.c'],
+        includePaths,
+        compileOptions: [...compilerFlags],
+        linkOptions: [...linkerFlags]
+      },
+      createTarget('env', ['./env/binding.c']),
+      createTarget('hello', ['./hello/binding.c']),
+      createTarget('arg', ['./arg/binding.c'], true),
+      createTarget('callback', ['./callback/binding.c'], true),
+      createTarget('objfac', ['./objfac/binding.c'], true),
+      createTarget('fnfac', ['./fnfac/binding.c'], true),
+      createTarget('general', ['./general/binding.c'], true),
+      createTarget('string', ['./string/binding.c'], true),
+      createTarget('property', ['./property/binding.c'], true),
+      createTarget('promise', ['./promise/binding.c'], true),
+      createTarget('object', ['./object/test_null.c', './object/test_object.c'], true),
+      createTarget('objwrap', ['./objwrap/myobject.cc'], true),
+      createTarget('bigint', ['./bigint/binding.c'], true),
+      createTarget('fnwrap', ['./fnwrap/myobject.cc', './fnwrap/binding.cc'], true),
+      createTarget('passwrap', ['./passwrap/myobject.cc', './passwrap/binding.cc'], true),
+      createTarget('array', ['./array/binding.c'], true),
+      createTarget('constructor', ['./constructor/binding.c'], true),
+      createTarget('conversion', ['./conversion/test_conversions.c', './conversion/test_null.c'], true),
+      createTarget('dataview', ['./dataview/binding.c'], true),
+      createTarget('date', ['./date/binding.c'], true),
+      createTarget('error', ['./error/binding.c'], true),
+      createTarget('exception', ['./exception/binding.c'], true),
+      createTarget('ref', ['./ref/binding.c'], true),
+      createTarget('ref_double_free', ['./ref_double_free/binding.c'], true),
+      createTarget('function', ['./function/binding.c'], true),
+      createTarget('scope', ['./scope/binding.c'], true),
+      createTarget('newtarget', ['./newtarget/binding.c'], true),
+      createTarget('number', ['./number/binding.c'], true),
+      createTarget('symbol', ['./symbol/binding.c'], true),
+      createTarget('typedarray', ['./typedarray/binding.c'], true),
+      ...(isEmscripten ? [createTarget('emnapitest', ['./emnapitest/binding.c'], true)] : []),
+      createTarget('version', ['./version/binding.c']),
+
+      createNodeAddonApiTarget('n_hello', ['./node-addon-api/hello/binding.cc'])
+    ]
+  }
+}
diff --git a/test/common.c b/packages/test/common.c
similarity index 100%
rename from test/common.c
rename to packages/test/common.c
diff --git a/test/common.h b/packages/test/common.h
similarity index 100%
rename from test/common.h
rename to packages/test/common.h
diff --git a/test/common.js b/packages/test/common.js
similarity index 100%
rename from test/common.js
rename to packages/test/common.js
diff --git a/test/constructor/binding.c b/packages/test/constructor/binding.c
similarity index 100%
rename from test/constructor/binding.c
rename to packages/test/constructor/binding.c
diff --git a/test/constructor/constructor.test.js b/packages/test/constructor/constructor.test.js
similarity index 100%
rename from test/constructor/constructor.test.js
rename to packages/test/constructor/constructor.test.js
diff --git a/test/conversion/conversion.test.js b/packages/test/conversion/conversion.test.js
similarity index 100%
rename from test/conversion/conversion.test.js
rename to packages/test/conversion/conversion.test.js
diff --git a/test/conversion/test_conversions.c b/packages/test/conversion/test_conversions.c
similarity index 100%
rename from test/conversion/test_conversions.c
rename to packages/test/conversion/test_conversions.c
diff --git a/test/conversion/test_null.c b/packages/test/conversion/test_null.c
similarity index 100%
rename from test/conversion/test_null.c
rename to packages/test/conversion/test_null.c
diff --git a/test/conversion/test_null.h b/packages/test/conversion/test_null.h
similarity index 100%
rename from test/conversion/test_null.h
rename to packages/test/conversion/test_null.h
diff --git a/test/dataview/binding.c b/packages/test/dataview/binding.c
similarity index 100%
rename from test/dataview/binding.c
rename to packages/test/dataview/binding.c
diff --git a/test/dataview/dataview.test.js b/packages/test/dataview/dataview.test.js
similarity index 100%
rename from test/dataview/dataview.test.js
rename to packages/test/dataview/dataview.test.js
diff --git a/test/date/binding.c b/packages/test/date/binding.c
similarity index 100%
rename from test/date/binding.c
rename to packages/test/date/binding.c
diff --git a/test/date/date.test.js b/packages/test/date/date.test.js
similarity index 100%
rename from test/date/date.test.js
rename to packages/test/date/date.test.js
diff --git a/test/emnapitest/binding.c b/packages/test/emnapitest/binding.c
similarity index 100%
rename from test/emnapitest/binding.c
rename to packages/test/emnapitest/binding.c
diff --git a/test/emnapitest/emnapi.test.js b/packages/test/emnapitest/emnapi.test.js
similarity index 100%
rename from test/emnapitest/emnapi.test.js
rename to packages/test/emnapitest/emnapi.test.js
diff --git a/test/entry_point.c b/packages/test/entry_point.c
similarity index 100%
rename from test/entry_point.c
rename to packages/test/entry_point.c
diff --git a/test/env/binding.c b/packages/test/env/binding.c
similarity index 100%
rename from test/env/binding.c
rename to packages/test/env/binding.c
diff --git a/test/env/env.test.js b/packages/test/env/env.test.js
similarity index 100%
rename from test/env/env.test.js
rename to packages/test/env/env.test.js
diff --git a/test/error/binding.c b/packages/test/error/binding.c
similarity index 100%
rename from test/error/binding.c
rename to packages/test/error/binding.c
diff --git a/test/error/error.test.js b/packages/test/error/error.test.js
similarity index 100%
rename from test/error/error.test.js
rename to packages/test/error/error.test.js
diff --git a/test/exception/binding.c b/packages/test/exception/binding.c
similarity index 100%
rename from test/exception/binding.c
rename to packages/test/exception/binding.c
diff --git a/test/exception/exception.test.js b/packages/test/exception/exception.test.js
similarity index 100%
rename from test/exception/exception.test.js
rename to packages/test/exception/exception.test.js
diff --git a/test/fnfac/binding.c b/packages/test/fnfac/binding.c
similarity index 100%
rename from test/fnfac/binding.c
rename to packages/test/fnfac/binding.c
diff --git a/test/fnfac/fnfac.test.js b/packages/test/fnfac/fnfac.test.js
similarity index 100%
rename from test/fnfac/fnfac.test.js
rename to packages/test/fnfac/fnfac.test.js
diff --git a/test/fnwrap/binding.cc b/packages/test/fnwrap/binding.cc
similarity index 100%
rename from test/fnwrap/binding.cc
rename to packages/test/fnwrap/binding.cc
diff --git a/test/fnwrap/fnwrap.test.js b/packages/test/fnwrap/fnwrap.test.js
similarity index 100%
rename from test/fnwrap/fnwrap.test.js
rename to packages/test/fnwrap/fnwrap.test.js
diff --git a/test/fnwrap/myobject.cc b/packages/test/fnwrap/myobject.cc
similarity index 100%
rename from test/fnwrap/myobject.cc
rename to packages/test/fnwrap/myobject.cc
diff --git a/test/fnwrap/myobject.h b/packages/test/fnwrap/myobject.h
similarity index 100%
rename from test/fnwrap/myobject.h
rename to packages/test/fnwrap/myobject.h
diff --git a/test/function/binding.c b/packages/test/function/binding.c
similarity index 100%
rename from test/function/binding.c
rename to packages/test/function/binding.c
diff --git a/test/function/function.test.js b/packages/test/function/function.test.js
similarity index 100%
rename from test/function/function.test.js
rename to packages/test/function/function.test.js
diff --git a/test/general/binding.c b/packages/test/general/binding.c
similarity index 100%
rename from test/general/binding.c
rename to packages/test/general/binding.c
diff --git a/test/general/finalizer.test.js b/packages/test/general/finalizer.test.js
similarity index 100%
rename from test/general/finalizer.test.js
rename to packages/test/general/finalizer.test.js
diff --git a/test/general/general.test.js b/packages/test/general/general.test.js
similarity index 100%
rename from test/general/general.test.js
rename to packages/test/general/general.test.js
diff --git a/test/general/global.test.js b/packages/test/general/global.test.js
similarity index 100%
rename from test/general/global.test.js
rename to packages/test/general/global.test.js
diff --git a/test/general/run.test.js b/packages/test/general/run.test.js
similarity index 100%
rename from test/general/run.test.js
rename to packages/test/general/run.test.js
diff --git a/test/general/status.test.js b/packages/test/general/status.test.js
similarity index 100%
rename from test/general/status.test.js
rename to packages/test/general/status.test.js
diff --git a/test/hello/binding.c b/packages/test/hello/binding.c
similarity index 100%
rename from test/hello/binding.c
rename to packages/test/hello/binding.c
diff --git a/test/hello/hello.test.js b/packages/test/hello/hello.test.js
similarity index 89%
rename from test/hello/hello.test.js
rename to packages/test/hello/hello.test.js
index 82d4d07c..8a4887bc 100644
--- a/test/hello/hello.test.js
+++ b/packages/test/hello/hello.test.js
@@ -21,7 +21,7 @@ module.exports = new Promise((resolve, reject) => {
   function load (request) {
     const mod = require(request)
   
-    return typeof mod.default === 'function' ? mod.default({ emnapiRuntime: require(${JSON.stringify(join(__dirname, '../../dist/emnapi.min.js'))}) }).then(({ Module }) => Module.emnapiExports) : Promise.resolve(mod)
+    return typeof mod.default === 'function' ? mod.default({ emnapiRuntime: require(${JSON.stringify(require.resolve('@tybys/emnapi-runtime'))}) }).then(({ Module }) => Module.emnapiExports) : Promise.resolve(mod)
   }
   load(${JSON.stringify(getEntry('hello'))}).then((binding) => { const msg = binding.hello(); parentPort.postMessage(msg) });`, { eval: true, env: process.env })
         .on('message', common.mustCall((msg) => {
diff --git a/test/newtarget/binding.c b/packages/test/newtarget/binding.c
similarity index 100%
rename from test/newtarget/binding.c
rename to packages/test/newtarget/binding.c
diff --git a/test/newtarget/newtarget.test.js b/packages/test/newtarget/newtarget.test.js
similarity index 100%
rename from test/newtarget/newtarget.test.js
rename to packages/test/newtarget/newtarget.test.js
diff --git a/test/node-addon-api/hello/binding.cc b/packages/test/node-addon-api/hello/binding.cc
similarity index 100%
rename from test/node-addon-api/hello/binding.cc
rename to packages/test/node-addon-api/hello/binding.cc
diff --git a/test/node-addon-api/hello/hello.test.js b/packages/test/node-addon-api/hello/hello.test.js
similarity index 100%
rename from test/node-addon-api/hello/hello.test.js
rename to packages/test/node-addon-api/hello/hello.test.js
diff --git a/test/number/binding.c b/packages/test/number/binding.c
similarity index 100%
rename from test/number/binding.c
rename to packages/test/number/binding.c
diff --git a/test/number/number.test.js b/packages/test/number/number.test.js
similarity index 100%
rename from test/number/number.test.js
rename to packages/test/number/number.test.js
diff --git a/test/object/object.test.js b/packages/test/object/object.test.js
similarity index 100%
rename from test/object/object.test.js
rename to packages/test/object/object.test.js
diff --git a/test/object/object_null.test.js b/packages/test/object/object_null.test.js
similarity index 100%
rename from test/object/object_null.test.js
rename to packages/test/object/object_null.test.js
diff --git a/test/object/test_null.c b/packages/test/object/test_null.c
similarity index 100%
rename from test/object/test_null.c
rename to packages/test/object/test_null.c
diff --git a/test/object/test_null.h b/packages/test/object/test_null.h
similarity index 100%
rename from test/object/test_null.h
rename to packages/test/object/test_null.h
diff --git a/test/object/test_object.c b/packages/test/object/test_object.c
similarity index 100%
rename from test/object/test_object.c
rename to packages/test/object/test_object.c
diff --git a/test/objfac/binding.c b/packages/test/objfac/binding.c
similarity index 100%
rename from test/objfac/binding.c
rename to packages/test/objfac/binding.c
diff --git a/test/objfac/objfac.test.js b/packages/test/objfac/objfac.test.js
similarity index 100%
rename from test/objfac/objfac.test.js
rename to packages/test/objfac/objfac.test.js
diff --git a/test/objwrap/myobject.cc b/packages/test/objwrap/myobject.cc
similarity index 100%
rename from test/objwrap/myobject.cc
rename to packages/test/objwrap/myobject.cc
diff --git a/test/objwrap/myobject.h b/packages/test/objwrap/myobject.h
similarity index 100%
rename from test/objwrap/myobject.h
rename to packages/test/objwrap/myobject.h
diff --git a/test/objwrap/objwrap.test.js b/packages/test/objwrap/objwrap.test.js
similarity index 100%
rename from test/objwrap/objwrap.test.js
rename to packages/test/objwrap/objwrap.test.js
diff --git a/packages/test/package.json b/packages/test/package.json
new file mode 100644
index 00000000..2aa7e986
--- /dev/null
+++ b/packages/test/package.json
@@ -0,0 +1,47 @@
+{
+  "name": "@tybys/emnapi-test",
+  "private": true,
+  "version": "0.10.0",
+  "description": "emnapi test",
+  "main": "index.js",
+  "devDependencies": {
+    "@tybys/cgen": "^0.11.1",
+    "chalk": "^4.1.1",
+    "cross-env": "^7.0.3",
+    "glob": "^7.2.0",
+    "node-addon-api": "4.3.0"
+  },
+  "scripts": {
+    "rebuild": "cd ../..&&npm run build&&cd ./packages/test && cgen rebuild -e -d",
+    "rebuild:r": "cd ../..&&npm run build&&cd ./packages/test && cgen rebuild -e",
+    "rebuild:n": "cgen rebuild -d",
+    "rebuild:nr": "cgen rebuild",
+    "test": "node ./script/test.js",
+    "test:r": "cross-env NODE_ENV=production node ./script/test.js",
+    "test:n": "cross-env EMNAPI_TEST_NATIVE=1 node ./script/test.js",
+    "test:nr": "cross-env EMNAPI_TEST_NATIVE=1 NODE_ENV=production node ./script/test.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/toyobayashi/emnapi.git"
+  },
+  "keywords": [
+    "emscripten",
+    "wasm",
+    "emcc",
+    "webassembly",
+    "bindings",
+    "c",
+    "c++",
+    "cpp",
+    "n-api",
+    "napi",
+    "node-addon-api"
+  ],
+  "author": "toyobayashi",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/toyobayashi/emnapi/issues"
+  },
+  "homepage": "https://github.com/toyobayashi/emnapi#readme"
+}
diff --git a/test/passwrap/binding.cc b/packages/test/passwrap/binding.cc
similarity index 100%
rename from test/passwrap/binding.cc
rename to packages/test/passwrap/binding.cc
diff --git a/test/passwrap/myobject.cc b/packages/test/passwrap/myobject.cc
similarity index 100%
rename from test/passwrap/myobject.cc
rename to packages/test/passwrap/myobject.cc
diff --git a/test/passwrap/myobject.h b/packages/test/passwrap/myobject.h
similarity index 100%
rename from test/passwrap/myobject.h
rename to packages/test/passwrap/myobject.h
diff --git a/test/passwrap/passwrap.test.js b/packages/test/passwrap/passwrap.test.js
similarity index 100%
rename from test/passwrap/passwrap.test.js
rename to packages/test/passwrap/passwrap.test.js
diff --git a/test/promise/binding.c b/packages/test/promise/binding.c
similarity index 100%
rename from test/promise/binding.c
rename to packages/test/promise/binding.c
diff --git a/test/promise/promise.test.js b/packages/test/promise/promise.test.js
similarity index 100%
rename from test/promise/promise.test.js
rename to packages/test/promise/promise.test.js
diff --git a/test/property/binding.c b/packages/test/property/binding.c
similarity index 100%
rename from test/property/binding.c
rename to packages/test/property/binding.c
diff --git a/test/property/property.test.js b/packages/test/property/property.test.js
similarity index 100%
rename from test/property/property.test.js
rename to packages/test/property/property.test.js
diff --git a/test/ref/binding.c b/packages/test/ref/binding.c
similarity index 100%
rename from test/ref/binding.c
rename to packages/test/ref/binding.c
diff --git a/test/ref/ref.test.js b/packages/test/ref/ref.test.js
similarity index 100%
rename from test/ref/ref.test.js
rename to packages/test/ref/ref.test.js
diff --git a/test/ref_double_free/binding.c b/packages/test/ref_double_free/binding.c
similarity index 100%
rename from test/ref_double_free/binding.c
rename to packages/test/ref_double_free/binding.c
diff --git a/test/ref_double_free/ref_double_free.test.js b/packages/test/ref_double_free/ref_double_free.test.js
similarity index 100%
rename from test/ref_double_free/ref_double_free.test.js
rename to packages/test/ref_double_free/ref_double_free.test.js
diff --git a/test/scope/binding.c b/packages/test/scope/binding.c
similarity index 100%
rename from test/scope/binding.c
rename to packages/test/scope/binding.c
diff --git a/test/scope/scope.test.js b/packages/test/scope/scope.test.js
similarity index 100%
rename from test/scope/scope.test.js
rename to packages/test/scope/scope.test.js
diff --git a/script/test-entry.js b/packages/test/script/test-entry.js
similarity index 100%
rename from script/test-entry.js
rename to packages/test/script/test-entry.js
diff --git a/script/test.js b/packages/test/script/test.js
similarity index 75%
rename from script/test.js
rename to packages/test/script/test.js
index 12ae0c99..de09b1b7 100644
--- a/script/test.js
+++ b/packages/test/script/test.js
@@ -3,7 +3,7 @@ const glob = require('glob')
 
 const cwd = require('path').join(__dirname, '..')
 
-const files = glob.sync('test/**/*.test.js', { cwd, ignore: process.env.EMNAPI_TEST_NATIVE ? 'test/emnapitest/**/*' : [] })
+const files = glob.sync('**/*.test.js', { cwd, ignore: process.env.EMNAPI_TEST_NATIVE ? 'test/emnapitest/**/*' : [] })
 
 files.forEach((f) => {
   test(f)
diff --git a/test/string/binding.c b/packages/test/string/binding.c
similarity index 100%
rename from test/string/binding.c
rename to packages/test/string/binding.c
diff --git a/test/string/string.test.js b/packages/test/string/string.test.js
similarity index 100%
rename from test/string/string.test.js
rename to packages/test/string/string.test.js
diff --git a/test/symbol/binding.c b/packages/test/symbol/binding.c
similarity index 100%
rename from test/symbol/binding.c
rename to packages/test/symbol/binding.c
diff --git a/test/symbol/symbol.test.js b/packages/test/symbol/symbol.test.js
similarity index 100%
rename from test/symbol/symbol.test.js
rename to packages/test/symbol/symbol.test.js
diff --git a/test/tmpdir.js b/packages/test/tmpdir.js
similarity index 100%
rename from test/tmpdir.js
rename to packages/test/tmpdir.js
diff --git a/test/typedarray/binding.c b/packages/test/typedarray/binding.c
similarity index 100%
rename from test/typedarray/binding.c
rename to packages/test/typedarray/binding.c
diff --git a/test/typedarray/typedarray.test.js b/packages/test/typedarray/typedarray.test.js
similarity index 100%
rename from test/typedarray/typedarray.test.js
rename to packages/test/typedarray/typedarray.test.js
diff --git a/test/util.js b/packages/test/util.js
similarity index 93%
rename from test/util.js
rename to packages/test/util.js
index 1b4c2252..fce9c6d8 100644
--- a/test/util.js
+++ b/packages/test/util.js
@@ -15,7 +15,7 @@ exports.load = function (targetName) {
     if (typeof mod.default === 'function') {
       const p = new Promise((resolve, reject) => {
         mod.default({
-          emnapiRuntime: require('../dist/emnapi.min.js'),
+          emnapiRuntime: require('@tybys/emnapi-runtime'),
           onEmnapiInitialized: (err) => {
             if (err) {
               reject(err)
diff --git a/test/version/binding.c b/packages/test/version/binding.c
similarity index 100%
rename from test/version/binding.c
rename to packages/test/version/binding.c
diff --git a/test/version/version.test.js b/packages/test/version/version.test.js
similarity index 100%
rename from test/version/version.test.js
rename to packages/test/version/version.test.js
diff --git a/script/build-runtime.js b/script/build-runtime.js
deleted file mode 100644
index 3e82e28d..00000000
--- a/script/build-runtime.js
+++ /dev/null
@@ -1,92 +0,0 @@
-const path = require('path')
-const fs = require('fs-extra')
-const rollup = require('rollup')
-const rollupTypescript = require('@rollup/plugin-typescript')
-const rollupNodeResolve = require('@rollup/plugin-node-resolve').default
-const rollupTerser = require('rollup-plugin-terser').terser
-const { runtimeOut } = require('./common.js')
-
-const {
-  Extractor,
-  ExtractorConfig
-} = require('@microsoft/api-extractor')
-const apiExtractorJsonPath = path.join(__dirname, '../lib/runtime/api-extractor.json')
-const extractorConfig = ExtractorConfig.loadFileAndPrepare(apiExtractorJsonPath)
-const extractorResult = Extractor.invoke(extractorConfig, {
-  localBuild: true,
-  showVerboseMessages: true
-})
-if (extractorResult.succeeded) {
-  console.log('API Extractor completed successfully')
-} else {
-  console.error(`API Extractor completed with ${extractorResult.errorCount} errors and ${extractorResult.warningCount} warnings`)
-  process.exit(1)
-}
-
-const runtimeDts = extractorConfig.publicTrimmedFilePath
-
-fs.removeSync(path.join(__dirname, '../dist/runtime'))
-fs.appendFileSync(runtimeDts, '\nexport as namespace emnapi;\n', 'utf8')
-
-const runtimeTsconfigPath = path.join(__dirname, '../tsconfig.prod.json')
-
-/**
- * @param {boolean=} minify
- * @returns {rollup.RollupOptions}
- */
-function createInput (minify) {
-  return {
-    input: path.join(__dirname, '../lib/runtime/index.ts'),
-    plugins: [
-      rollupNodeResolve({
-        mainFields: ['module', 'main']
-      }),
-      rollupTypescript({
-        tsconfig: runtimeTsconfigPath
-      }),
-      ...(minify
-        ? [
-            rollupTerser({
-              compress: true,
-              mangle: true,
-              format: {
-                comments: false
-              }
-            })
-          ]
-        : [])
-    ]
-  }
-}
-
-Promise.all(([
-  {
-    input: createInput(false),
-    output: {
-      file: runtimeOut,
-      format: 'iife',
-      name: 'emnapi',
-      exports: 'named'
-    }
-  },
-  {
-    input: createInput(false),
-    output: {
-      file: path.join(path.dirname(runtimeOut), 'emnapi.js'),
-      format: 'umd',
-      name: 'emnapi',
-      exports: 'named'
-    }
-  },
-  {
-    input: createInput(true),
-    output: {
-      file: path.join(path.dirname(runtimeOut), 'emnapi.min.js'),
-      format: 'umd',
-      name: 'emnapi',
-      exports: 'named'
-    }
-  }
-]).map(conf => {
-  return rollup.rollup(conf.input).then(bundle => bundle.write(conf.output))
-}))
diff --git a/script/build.js b/script/build.js
deleted file mode 100644
index b788550f..00000000
--- a/script/build.js
+++ /dev/null
@@ -1,63 +0,0 @@
-const fs = require('fs')
-const path = require('path')
-
-const { runtimeOut } = require('./common.js')
-
-const libTsconfigPath = path.join(__dirname, '../tsconfig.json')
-const libTsconfig = JSON.parse(fs.readFileSync(libTsconfigPath, 'utf8'))
-
-const libOut = path.join(path.dirname(libTsconfigPath), libTsconfig.compilerOptions.outFile)
-
-const runtimeCode = fs.readFileSync(runtimeOut, 'utf8')
-const libCode = fs.readFileSync(libOut, 'utf8')
-
-fs.writeFileSync(libOut,
-  libCode
-    .replace('__EMNAPI_RUNTIME_REPLACE__', `'${runtimeCode.replace(/\\/g, '\\\\').replace(/\r?\n/g, '\\n').replace(/'/g, "\\'")}'`)
-    .replace('__EMNAPI_RUNTIME_INIT__;', '')
-    .replace(/(makeDynCall\(.*?\))/g, '{{{ $1 }}}')
-    /* .replace(/(makeMalloc\(.*?\))/g, '{{{ $1 }}}') */,
-  'utf8'
-)
-
-fs.writeFileSync(path.join(path.dirname(libOut), path.basename(libOut, '.js') + '_no_runtime.js'),
-  libCode
-    .replace('__EMNAPI_RUNTIME_REPLACE__', '""')
-    .replace('__EMNAPI_RUNTIME_INIT__;', `
-      (function () {
-        if ('emnapiRuntime' in Module) {
-          emnapi = Module.emnapiRuntime;
-        }
-        if (!emnapi && typeof require === 'function') {
-          try {
-            if (typeof process !== 'undefined' && process.env.NODE_ENV === 'production') {
-              emnapi = require('@tybys/emnapi/dist/emnapi.min.js');
-            } else {
-              emnapi = require('@tybys/emnapi/dist/emnapi.js');
-            }
-          } catch (_) {}
-        }
-        if (!emnapi) {
-          emnapi = (function () {
-            let g;
-            g = (function () { return this })();
-    
-            try {
-              g = g || new Function('return this')();
-            } catch (_) {
-              if (typeof globalThis !== 'undefined') return globalThis;
-              if (typeof __webpack_public_path__ === 'undefined') {
-                if (typeof global !== 'undefined') return global;
-              }
-              if (typeof window !== 'undefined') return window;
-              if (typeof self !== 'undefined') return self;
-            }
-    
-            return g;
-          })().emnapi;
-        }
-      })();`)
-    .replace(/(makeDynCall\(.*?\))/g, '{{{ $1 }}}')
-    /* .replace(/(makeMalloc\(.*?\))/g, '{{{ $1 }}}') */,
-  'utf8'
-)
diff --git a/script/common.js b/script/common.js
deleted file mode 100644
index 170ad88b..00000000
--- a/script/common.js
+++ /dev/null
@@ -1,5 +0,0 @@
-const path = require('path')
-
-const runtimeOut = path.join(__dirname, '../dist/library_napi_runtime.js')
-
-exports.runtimeOut = runtimeOut
diff --git a/script/progress.js b/script/progress.js
deleted file mode 100644
index 9c7b4fb1..00000000
--- a/script/progress.js
+++ /dev/null
@@ -1,7 +0,0 @@
-const fs = require('fs')
-const path = require('path')
-
-const readme = fs.readFileSync(path.join(__dirname, '../README.md'), 'utf8')
-const total = readme.match(/-\s\[[x ]\] \S+/g)
-const implemented = readme.match(/-\s\[x\] \S+/g)
-console.log(implemented.length + ' / ' + total.length + ' [' + Math.floor(100 * implemented.length / total.length) + '%]')
diff --git a/script/release.js b/script/release.js
index 52ae1875..20f16825 100644
--- a/script/release.js
+++ b/script/release.js
@@ -10,14 +10,15 @@ fs.mkdirSync(path.join(root, 'lib'), { recursive: true })
 fs.mkdirSync(path.join(root, 'include/emnapi'), { recursive: true })
 fs.mkdirSync(path.join(root, 'src'), { recursive: true })
 
-fs.copyFileSync(path.join(__dirname, '../dist/library_napi.js'), path.join(root, 'lib', 'library_napi.js'))
-fs.copyFileSync(path.join(__dirname, '../dist/library_napi_no_runtime.js'), path.join(root, 'lib', 'library_napi_no_runtime.js'))
-fs.copyFileSync(path.join(__dirname, '../dist/emnapi.js'), path.join(root, 'lib', 'emnapi.js'))
-fs.copyFileSync(path.join(__dirname, '../dist/emnapi.min.js'), path.join(root, 'lib', 'emnapi.min.js'))
-fs.copyFileSync(path.join(__dirname, '../src/emnapi.c'), path.join(root, 'src', 'emnapi.c'))
-fs.readdirSync(path.join(__dirname, '../include')).forEach(item => {
+fs.copyFileSync(path.join(__dirname, '../packages/emnapi/dist/library_napi.js'), path.join(root, 'lib', 'library_napi.js'))
+fs.copyFileSync(path.join(__dirname, '../packages/emnapi/dist/library_napi_no_runtime.js'), path.join(root, 'lib', 'library_napi_no_runtime.js'))
+fs.copyFileSync(path.join(__dirname, '../packages/runtime/dist/emnapi.js'), path.join(root, 'lib', 'emnapi.js'))
+fs.copyFileSync(path.join(__dirname, '../packages/runtime/dist/emnapi.min.js'), path.join(root, 'lib', 'emnapi.min.js'))
+fs.copyFileSync(path.join(__dirname, '../packages/runtime/dist/emnapi.d.ts'), path.join(root, 'lib', 'emnapi.d.ts'))
+fs.copyFileSync(path.join(__dirname, '../packages/emnapi/src/emnapi.c'), path.join(root, 'src', 'emnapi.c'))
+fs.readdirSync(path.join(__dirname, '../packages/emnapi/include')).forEach(item => {
   if (item !== '.' && item !== '..') {
-    fs.copyFileSync(path.join(__dirname, '../include', item), path.join(root, 'include/emnapi', item))
+    fs.copyFileSync(path.join(__dirname, '../packages/emnapi/include', item), path.join(root, 'include/emnapi', item))
   }
 })
 
diff --git a/test/cgen.config.js b/test/cgen.config.js
deleted file mode 100644
index 3daba865..00000000
--- a/test/cgen.config.js
+++ /dev/null
@@ -1,97 +0,0 @@
-module.exports = function (_options, { isDebug, isEmscripten }) {
-  const compilerFlags = isEmscripten
-    ? [
-        // ...(isDebug ? ['-sDISABLE_EXCEPTION_CATCHING=0'] : [])
-      ]
-    : []
-
-  const linkerFlags = isEmscripten
-    ? [
-        // "-sEXPORTED_FUNCTIONS=['_malloc','_free']",
-        '-sALLOW_MEMORY_GROWTH=1',
-        ...(isDebug ? ['-sSAFE_HEAP=1'/* , '-sDISABLE_EXCEPTION_CATCHING=0' */] : [])
-      ]
-    : []
-
-  const includePaths = isEmscripten
-    ? ['../include']
-    : [`${require('path').join(require('os').homedir(), 'AppData/Local/node-gyp/Cache', process.versions.node, 'include/node')}`, '../node_modules/node-addon-api']
-
-  const createTarget = (name, sources, needEntry) => ({
-    name: name,
-    type: isEmscripten ? 'exe' : 'node',
-    sources: [...(needEntry ? (sources.push('../test/entry_point.c'), sources) : sources)],
-    emwrap: {
-      exports: ['emnapi']
-    },
-    includePaths,
-    libs: ['testcommon', ...(isEmscripten ? ['emnapi'] : [])],
-    compileOptions: [...compilerFlags],
-    // eslint-disable-next-line no-template-curly-in-string
-    linkOptions: [...linkerFlags]
-  })
-
-  const createNodeAddonApiTarget = (name, sources) => ({
-    name: name,
-    type: isEmscripten ? 'exe' : 'node',
-    sources: [...sources],
-    emwrap: {
-      exports: ['emnapi']
-    },
-    includePaths,
-    libs: [...(isEmscripten ? ['emnapi'] : [])],
-    defines: ['NAPI_DISABLE_CPP_EXCEPTIONS', 'NODE_ADDON_API_ENABLE_MAYBE'],
-    compileOptions: [...compilerFlags],
-    // eslint-disable-next-line no-template-curly-in-string
-    linkOptions: [...linkerFlags]
-  })
-
-  return {
-    project: 'emnapitest',
-    dependencies: isEmscripten ? { '..': { EMNAPI_LIB_NO_RUNTIME: 'ON' } } : {},
-    targets: [
-      {
-        type: 'lib',
-        name: 'testcommon',
-        sources: ['../test/common.c'],
-        includePaths,
-        compileOptions: [...compilerFlags],
-        linkOptions: [...linkerFlags]
-      },
-      createTarget('env', ['../test/env/binding.c']),
-      createTarget('hello', ['../test/hello/binding.c']),
-      createTarget('arg', ['../test/arg/binding.c'], true),
-      createTarget('callback', ['../test/callback/binding.c'], true),
-      createTarget('objfac', ['../test/objfac/binding.c'], true),
-      createTarget('fnfac', ['../test/fnfac/binding.c'], true),
-      createTarget('general', ['../test/general/binding.c'], true),
-      createTarget('string', ['../test/string/binding.c'], true),
-      createTarget('property', ['../test/property/binding.c'], true),
-      createTarget('promise', ['../test/promise/binding.c'], true),
-      createTarget('object', ['../test/object/test_null.c', '../test/object/test_object.c'], true),
-      createTarget('objwrap', ['../test/objwrap/myobject.cc'], true),
-      createTarget('bigint', ['../test/bigint/binding.c'], true),
-      createTarget('fnwrap', ['../test/fnwrap/myobject.cc', '../test/fnwrap/binding.cc'], true),
-      createTarget('passwrap', ['../test/passwrap/myobject.cc', '../test/passwrap/binding.cc'], true),
-      createTarget('array', ['../test/array/binding.c'], true),
-      createTarget('constructor', ['../test/constructor/binding.c'], true),
-      createTarget('conversion', ['../test/conversion/test_conversions.c', '../test/conversion/test_null.c'], true),
-      createTarget('dataview', ['../test/dataview/binding.c'], true),
-      createTarget('date', ['../test/date/binding.c'], true),
-      createTarget('error', ['../test/error/binding.c'], true),
-      createTarget('exception', ['../test/exception/binding.c'], true),
-      createTarget('ref', ['../test/ref/binding.c'], true),
-      createTarget('ref_double_free', ['../test/ref_double_free/binding.c'], true),
-      createTarget('function', ['../test/function/binding.c'], true),
-      createTarget('scope', ['../test/scope/binding.c'], true),
-      createTarget('newtarget', ['../test/newtarget/binding.c'], true),
-      createTarget('number', ['../test/number/binding.c'], true),
-      createTarget('symbol', ['../test/symbol/binding.c'], true),
-      createTarget('typedarray', ['../test/typedarray/binding.c'], true),
-      ...(isEmscripten ? [createTarget('emnapitest', ['../test/emnapitest/binding.c'], true)] : []),
-      createTarget('version', ['../test/version/binding.c']),
-
-      createNodeAddonApiTarget('n_hello', ['../test/node-addon-api/hello/binding.cc'])
-    ]
-  }
-}
diff --git a/tsconfig.json b/tsconfig.json
index 44e9c93a..03491535 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,9 +1,18 @@
 {
-  "extends": "./tsconfig.base.json",
   "compilerOptions": {
-    "outFile": "./dist/library_napi.js",
-    "importHelpers": false,
-    "noEmitHelpers": true,
+    "target": "ES5",
+    "module": "none",
+    "noImplicitAny": true,
+    "noImplicitReturns": true,
+    "noImplicitThis": true,
+    "noImplicitUseStrict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "strictNullChecks": true,
+    "strictPropertyInitialization": true,
+    "strictBindCallApply": true,
+    "strictFunctionTypes": true,
+    "noEmit": true,
     "types": [],
     "lib": [
       "ES5",
@@ -14,11 +23,6 @@
     ]
   },
   "include": [
-    "./dist/library_napi_runtime.d.ts",
-    "./lib/typings/runtime.d.ts",
-    "./lib/typings/napi.d.ts",
-    "./lib/typings/compiler.d.ts",
-    "./lib/*.ts",
-    "./lib/value/*.ts"
+    "./packages/**/*.ts"
   ]
 }