diff --git a/package-lock.json b/package-lock.json
index 0dfe264..e85eb81 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,2378 +1,8 @@
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   "dependencies": {
     "@babel/code-frame": {
       "version": "7.12.11",
diff --git a/package.json b/package.json
index c58aaba..29889f7 100644
--- a/package.json
+++ b/package.json
@@ -40,10 +40,10 @@
     "url": "https://www.patreon.com/tshemsedinov"
   },
   "scripts": {
-    "lint": "eslint . && prettier --check \"**/*.js\" \"**/*.json\" \"**/*.md\" \"**/.*rc\" \"**/*.yml\"",
+    "lint": "eslint . && prettier -c \"**/*.js\" \"**/*.json\" \"**/*.md\" \"**/.*rc\" \"**/*.ts\"",
     "types": "tsc -p types/tsconfig.json",
-    "fmt": "prettier --write \"**/*.js\" \"**/*.json\" \"**/*.md\" \"**/.*rc\" \"**/*.yml\"",
-    "test": "npm run types && eslint . && metatests test/"
+    "fmt": "prettier --write \"**/*.js\" \"**/*.json\" \"**/*.md\" \"**/.*rc\" \"**/*.ts\"",
+    "test": "npm run lint && npm run types && metatests test/"
   },
   "devDependencies": {
     "@types/node": "^14.14.37",
diff --git a/types/metavm.d.ts b/types/metavm.d.ts
new file mode 100644
index 0000000..4dbb5f5
--- /dev/null
+++ b/types/metavm.d.ts
@@ -0,0 +1,32 @@
+import { Context, Script, ScriptOptions, BaseOptions } from 'vm';
+
+export const EMPTY_CONTEXT: Context;
+export const COMMON_CONTEXT: Context;
+
+export function createContext(
+  context: Context,
+  preventEscape?: boolean
+): Context;
+
+export interface MetaScriptOptions extends ScriptOptions {
+  context: Context;
+}
+
+export class MetaScript {
+  constructor(name: string, src: string, options?: MetaScriptOptions);
+  name: string;
+  script: Script;
+  context: Context;
+  exports: any;
+}
+
+export function createScript(
+  name: string,
+  src: string,
+  options?: MetaScriptOptions
+): MetaScript;
+
+export function readScript(
+  filePath: string,
+  options?: BaseOptions
+): Promise<MetaScript>;
diff --git a/types/tsconfig.json b/types/tsconfig.json
index 88d9299..8a74313 100644
--- a/types/tsconfig.json
+++ b/types/tsconfig.json
@@ -8,4 +8,4 @@
     "preserveWatchOutput": true
   },
   "include": ["*.d.ts"]
-}
\ No newline at end of file
+}