diff --git a/.eslintrc.js b/.eslintrc.js
index 8770a01..8bd11d7 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,16 +1,14 @@
 module.exports = {
     "env": {
-        "node": true,
-        "es6": true
+      "node": true,
+      "es6": true
     },
-    "extends": "eslint:recommended",
-    "globals": {
-        "Atomics": "readonly",
-        "SharedArrayBuffer": "readonly"
-    },
-    "parserOptions": {
+  "extends": [
+    "plugin:prettier/recommended"
+  ],
+  "parserOptions": {
         "ecmaVersion": 2018
     },
-    "rules": {
-    }
+  "rules": {
+  }
 };
diff --git a/build.js b/build.js
index 2766996..0ca7abe 100644
--- a/build.js
+++ b/build.js
@@ -18,17 +18,17 @@
  * THE SOFTWARE.
  */
 
+"use strict";
+
 const { ArgumentParser } = require("argparse");
 const fs = require("fs");
 const { spawn, exec } = require("child_process");
 const { resolve } = require("path");
 
 function execAndPrint(fun, args) {
-  const child = spawn(fun, args.split(" "), {stdio: "inherit"});
-  return new Promise((resolve) => {
-    child.on("close", () => {
-      resolve();
-    });
+  const child = spawn(fun, args.split(" "), { stdio: "inherit" });
+  return new Promise((res) => {
+    child.on("close", res);
   });
 }
 
@@ -37,10 +37,13 @@ function create() {
 }
 
 function build(path) {
-  const workingDir = resolve(".");
-  const uid = process.getuid();
-  const gid = process.getgid();
-  return execAndPrint("docker", `run -t -v ${path}:/js -v ${workingDir}:/code --rm --user ${uid}:${gid} qjs-sandbox`);
+  const workingDir = resolve("."),
+    uid = process.getuid(),
+    gid = process.getgid();
+  return execAndPrint(
+    "docker",
+    `run -t -v ${path}:/js -v ${workingDir}:/code --rm --user ${uid}:${gid} qjs-sandbox`
+  );
 }
 
 function compile(path) {
@@ -51,7 +54,10 @@ function compile(path) {
       return;
     }
     exec("docker images qjs-sandbox", (err, stdout) => {
-      const output = stdout.split("\n").map(line => line.trim()).filter(line => !!line);
+      const output = stdout
+        .split("\n")
+        .map((line) => line.trim())
+        .filter((line) => Boolean(line));
       if (output.length === 1) {
         create().then(() => {
           build(path);
@@ -60,42 +66,33 @@ function compile(path) {
         build(path);
       }
     });
-  })
+  });
 }
 
 const parser = new ArgumentParser({
-  description: "Build sandbox"
+  description: "Build sandbox",
 });
 
-parser.add_argument(
-  "-C",
-  "--create",
-  {
-    help: "Create the docker image",
-    action: "store_true",
-  }
-);
-parser.add_argument(
-  "-c",
-  "--compile",
-  {
-    help: "Compile the sandbox and output a js file",
-    action: "store_true",
-  }
-);
-parser.add_argument(
-  "-o",
-  "--output",
-  {
-    help: "Output directory",
-    default: ".",
-  }
-);
+parser.add_argument("-C", "--create", {
+  help: "Create the docker image",
+  action: "store_true",
+});
+parser.add_argument("-c", "--compile", {
+  help: "Compile the sandbox and output a js file",
+  action: "store_true",
+});
+parser.add_argument("-o", "--output", {
+  help: "Output directory",
+  default: ".",
+});
 
-const args = parser.parse_args()
+const args = parser.parse_args();
 if (args.create) {
-  create()
-}
-if (args.compile) {
-  compile(args.output)
+  create().then(() => {
+    if (args.compile) {
+      compile(args.output);
+    }
+  });
+} else if (args.compile) {
+  compile(args.output);
 }
diff --git a/package-lock.json b/package-lock.json
index 5c712d0..18536d5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -313,6 +313,24 @@
         "v8-compile-cache": "^2.0.3"
       }
     },
+    "eslint-config-prettier": {
+      "version": "6.15.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-6.15.0.tgz",
+      "integrity": "sha512-a1+kOYLR8wMGustcgAjdydMsQ2A/2ipRPwRKUmfYaSxc9ZPcrku080Ctl6zrZzZNs/U82MjSv+qKREkoq3bJaw==",
+      "dev": true,
+      "requires": {
+        "get-stdin": "^6.0.0"
+      }
+    },
+    "eslint-plugin-prettier": {
+      "version": "3.1.4",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-prettier/-/eslint-plugin-prettier-3.1.4.tgz",
+      "integrity": "sha512-jZDa8z76klRqo+TdGDTFJSavwbnWK2ZpqGKNZ+VvweMW516pDUMmQ2koXvxEE4JhzNvTv+radye/bWGBmA6jmg==",
+      "dev": true,
+      "requires": {
+        "prettier-linter-helpers": "^1.0.0"
+      }
+    },
     "eslint-scope": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-5.1.1.tgz",
@@ -423,6 +441,12 @@
       "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
       "dev": true
     },
+    "fast-diff": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/fast-diff/-/fast-diff-1.2.0.tgz",
+      "integrity": "sha512-xJuoT5+L99XlZ8twedaRf6Ax2TgQVxvgZOYoPKqZufmJib0tL2tegPBOZb1pVNgIhlqDlA0eO0c3wBvQcmzx4w==",
+      "dev": true
+    },
     "fast-json-stable-stringify": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
@@ -473,6 +497,12 @@
       "integrity": "sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=",
       "dev": true
     },
+    "get-stdin": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-6.0.0.tgz",
+      "integrity": "sha512-jp4tHawyV7+fkkSKyvjuLZswblUtz+SQKzSWnBbii16BuZksJlU1wuBYXY75r+duh/llF1ur6oNwi+2ZzjKZ7g==",
+      "dev": true
+    },
     "glob": {
       "version": "7.1.6",
       "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
@@ -717,6 +747,21 @@
       "integrity": "sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==",
       "dev": true
     },
+    "prettier": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.2.0.tgz",
+      "integrity": "sha512-yYerpkvseM4iKD/BXLYUkQV5aKt4tQPqaGW6EsZjzyu0r7sVZZNPJW4Y8MyKmicp6t42XUPcBVA+H6sB3gqndw==",
+      "dev": true
+    },
+    "prettier-linter-helpers": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/prettier-linter-helpers/-/prettier-linter-helpers-1.0.0.tgz",
+      "integrity": "sha512-GbK2cP9nraSSUF9N2XwUwqfzlAFlMNYYl+ShE/V+H8a9uNl/oUqB1w2EL54Jh0OlyRSd8RfWYJ3coVS4TROP2w==",
+      "dev": true,
+      "requires": {
+        "fast-diff": "^1.1.2"
+      }
+    },
     "progress": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/progress/-/progress-2.0.3.tgz",
diff --git a/package.json b/package.json
index 529f40f..bb55f55 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,10 @@
   "version": "2.0.0",
   "devDependencies": {
     "argparse": "^2.0.1",
-    "eslint": "^7.13.0"
+    "eslint": "^7.13.0",
+    "eslint-plugin-prettier": "^3.1.4",
+    "prettier": "^2.1.2",
+    "eslint-config-prettier": "^6.15.0"
   },
   "license": "Apache-2.0"
 }