diff --git a/.gitignore b/.gitignore
index 0125458..bd50957 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
+# Autogenerated
+*.d.ts
+
 # Logs
 logs
 *.log
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..405b278
--- /dev/null
+++ b/README.md
@@ -0,0 +1,35 @@
+# @isbl/fs
+
+Wraps `node:fs/promises` and sync functions from `node:fs` to add proper async
+error stack.
+
+Install
+
+```sh
+yarn add @isbl/fs
+```
+
+If you are using typescript then you should also install type definitions
+
+```sh
+yarn add -D @types/node
+```
+
+## Usage
+
+Same as original wrapped functions, also includes typescript definitions.
+Note that this module is ESM-only so it can't be imported using `require`.
+
+```ts
+import fs from '@isbl/fs'
+await fs.readFile(...)
+
+// or
+
+import { readFile } from '@isbl/fs'
+await readFile(...)
+```
+
+## Available functions
+
+See start of `index.mjs` file. It lists all the exports.
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..1c949f6
--- /dev/null
+++ b/index.js
@@ -0,0 +1,58 @@
+import * as fsPromises from "fs/promises"
+import * as fsSync from "fs"
+
+// Adding new function:
+// 1. add `export const ...` here
+// 2. add it to `export default { ... }`
+export const readFile = wrap("readFile")
+export const writeFile = wrap("writeFile")
+export const readFileSync = wrapSync("readFileSync")
+export const mkdir = wrap("mkdir")
+export const copyFile = wrap("copyFile")
+export const rm = wrap("rm")
+export default { readFile, writeFile, readFileSync, mkdir, copyFile, rm }
+
+/** @type {<M extends keyof typeof fsPromises>(method: M) => fsPromises[M]} */
+function wrap(method) {
+  if (!fsPromises[method]) return null
+  Object.defineProperty(wrapper, "name", { writable: true })
+  wrapper.name = fsPromises[method].name
+  Object.defineProperty(wrapper, "name", { writable: false })
+  return wrapper
+  async function wrapper(...args) {
+    try {
+      return await fsPromises[method](...args)
+    } catch (e) {
+      const opt = { cause: e }
+      const err = new Error(
+        `Error in fsPromises.${method} ${args[0]}\n${e.message}`,
+        opt,
+      )
+      Error.captureStackTrace?.(err, wrapper)
+      err.code = e.code
+      throw err
+    }
+  }
+}
+
+/** @type <M extends keyof typeof fsSync>(method: M) => fsSync[M] */
+function wrapSync(method) {
+  if (!fsSync[method]) return null
+  Object.defineProperty(wrapper, "name", { writable: true })
+  wrapper.name = fsSync[method].name
+  Object.defineProperty(wrapper, "name", { writable: false })
+  return wrapper
+  function wrapper(...args) {
+    try {
+      return fsSync[method](...args)
+    } catch (e) {
+      const opt = { cause: e }
+      const err = new Error(
+        `Error in fs.${method} ${args[0]}\n${e.message}`,
+        opt,
+      )
+      err.code = e.code
+      throw err
+    }
+  }
+}
diff --git a/package.json b/package.json
index a7beb7e..ac14a98 100644
--- a/package.json
+++ b/package.json
@@ -2,19 +2,40 @@
   "name": "@isbl/fs",
   "version": "0.1.0",
   "description": "Wrappers around node:fs with proper error stack support",
-  "main": "index.js",
   "repository": {
     "type": "git",
     "url": "https://github.com/CodeWitchBella/isbl-fs.git"
   },
+  "exports": "./index.js",
+  "types": "./index.d.ts",
   "author": "Isabella Skořepová <isabella@skorepova.info>",
   "license": "MIT",
   "private": false,
+  "type": "module",
+  "peerDependenciesMeta": {
+    "@types/node": {
+      "optional": true
+    }
+  },
+  "engines": {
+    "node": ">=14.15.0"
+  },
+  "peerDependencies": {
+    "@types/node": ">=14.15.0"
+  },
+  "files": [
+    "index.js",
+    "index.d.ts",
+    "README.md"
+  ],
   "devDependencies": {
     "@isbl/publisher": "^0.7.1",
-    "prettier": "^2.3.2"
+    "@types/node": "^16.7.10",
+    "prettier": "^2.3.2",
+    "typescript": "^4.4.2"
   },
   "scripts": {
+    "prepare": "tsc",
     "prepublishOnly": "isbl-publisher prepublishOnly",
     "publish:npm": "isbl-publisher publish --no-draft"
   }
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..c09876b
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "target": "es2021",
+    "module": "ES2020",
+    "allowJs": true,
+    "declaration": true,
+    "emitDeclarationOnly": true,
+    "strict": false,
+    "skipLibCheck": false
+  },
+  "include": ["index.js"]
+}
diff --git a/yarn.lock b/yarn.lock
index 0903ff6..a141908 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10,6 +10,11 @@
     node-fetch "^2.6.1"
     open "^8.2.1"
 
+"@types/node@^16.7.10":
+  version "16.7.10"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-16.7.10.tgz#7aa732cc47341c12a16b7d562f519c2383b6d4fc"
+  integrity sha512-S63Dlv4zIPb8x6MMTgDq5WWRJQe56iBEY0O3SOFA9JrRienkOVDXSXBjjJw6HTNQYSE2JI6GMCR6LVbIMHJVvA==
+
 define-lazy-prop@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/define-lazy-prop/-/define-lazy-prop-2.0.0.tgz#3f7ae421129bcaaac9bc74905c98a0009ec9ee7f"
@@ -45,3 +50,8 @@ prettier@^2.3.2:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.3.2.tgz#ef280a05ec253712e486233db5c6f23441e7342d"
   integrity sha512-lnJzDfJ66zkMy58OL5/NY5zp70S7Nz6KqcKkXYzn2tMVrNxvbqaBpg7H3qHaLxCJ5lNMsGuM8+ohS7cZrthdLQ==
+
+typescript@^4.4.2:
+  version "4.4.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.4.2.tgz#6d618640d430e3569a1dfb44f7d7e600ced3ee86"
+  integrity sha512-gzP+t5W4hdy4c+68bfcv0t400HVJMMd2+H9B7gae1nQlBzCqvrXX+6GL/b3GAgyTH966pzrZ70/fRjwAtZksSQ==