diff --git a/argon2.d.ts b/argon2.d.mts
similarity index 96%
rename from argon2.d.ts
rename to argon2.d.mts
index 0e7bc7a..6c52040 100644
--- a/argon2.d.ts
+++ b/argon2.d.mts
@@ -1,5 +1,3 @@
-// Type definitions for argon2 v0.19.2
-
 /// <reference types="node" />
 
 export const argon2d: 0;
diff --git a/argon2.js b/argon2.mjs
similarity index 62%
rename from argon2.js
rename to argon2.mjs
index 0e6cfa2..d0caf08 100644
--- a/argon2.js
+++ b/argon2.mjs
@@ -1,39 +1,45 @@
-"use strict";
-const assert = require("assert");
-const { randomBytes, timingSafeEqual } = require("crypto");
-const path = require("path");
-const { promisify } = require("util");
-const binary = require("@mapbox/node-pre-gyp");
-
-const bindingPath = binary.find(path.resolve(__dirname, "./package.json"));
+import assert from "node:assert/strict";
+import { randomBytes, timingSafeEqual } from "node:crypto";
+import { createRequire } from "node:module";
+import { fileURLToPath } from "node:url";
+import { promisify } from "node:util";
+import nodePreGyp from "@mapbox/node-pre-gyp";
+import { deserialize, serialize } from "@phc/format";
+
+const packageJson = fileURLToPath(new URL("./package.json", import.meta.url));
+const bindingPath = nodePreGyp.find(packageJson);
+
+const require = createRequire(import.meta.url);
 const { hash: _hash } = require(bindingPath);
 
-const { deserialize, serialize } = require("@phc/format");
+export const argon2d = 0;
+export const argon2i = 1;
+export const argon2id = 2;
 
-const types = Object.freeze({ argon2d: 0, argon2i: 1, argon2id: 2 });
-
-const defaults = Object.freeze({
+export const defaults = Object.freeze({
   hashLength: 32,
   saltLength: 16,
   timeCost: 3,
-  memoryCost: 1 << 16,
+  memoryCost: 2 ** 16,
   parallelism: 4,
-  type: types.argon2id,
+  type: argon2id,
   version: 0x13,
 });
 
-const limits = Object.freeze({
+export const limits = Object.freeze({
   hashLength: { min: 4, max: 2 ** 32 - 1 },
-  memoryCost: { min: 1 << 10, max: 2 ** 32 - 1 },
+  memoryCost: { min: 2 ** 10, max: 2 ** 32 - 1 },
   timeCost: { min: 2, max: 2 ** 32 - 1 },
   parallelism: { min: 1, max: 2 ** 24 - 1 },
 });
 
-const names = Object.freeze({
-  [types.argon2d]: "argon2d",
-  [types.argon2i]: "argon2i",
-  [types.argon2id]: "argon2id",
-});
+const names = {
+  [argon2d]: "argon2d",
+  [argon2i]: "argon2i",
+  [argon2id]: "argon2id",
+};
+
+const types = { argon2d, argon2i, argon2id };
 
 const bindingsHash = promisify(_hash);
 const generateSalt = promisify(randomBytes);
@@ -48,7 +54,7 @@ const assertLimits =
     );
   };
 
-const hash = async (plain, { raw, salt, ...options } = {}) => {
+export const hash = async (plain, { raw, salt, ...options } = {}) => {
   options = { ...defaults, ...options };
 
   Object.entries(limits).forEach(assertLimits(options));
@@ -77,7 +83,7 @@ const hash = async (plain, { raw, salt, ...options } = {}) => {
   });
 };
 
-const needsRehash = (digest, options) => {
+export const needsRehash = (digest, options) => {
   const { memoryCost, timeCost, version } = { ...defaults, ...options };
 
   const {
@@ -87,13 +93,14 @@ const needsRehash = (digest, options) => {
   return +v !== +version || +m !== +memoryCost || +t !== +timeCost;
 };
 
-const verify = async (digest, plain, options) => {
+export const verify = async (digest, plain, options) => {
   const obj = deserialize(digest);
   // Only these have the "params" key, so if the password was encoded
   // using any other method, the destructuring throws an error
-  if (!(obj.id in types)) {
-    return false;
-  }
+  assert(
+    obj.id in types,
+    `Invalid type, must be one of: ${Object.keys(types).join(", ")}`,
+  );
 
   const {
     id,
@@ -117,5 +124,3 @@ const verify = async (digest, plain, options) => {
     hash,
   );
 };
-
-module.exports = { defaults, limits, hash, needsRehash, verify, ...types };
diff --git a/package.json b/package.json
index bf4ec74..f827c8e 100644
--- a/package.json
+++ b/package.json
@@ -2,10 +2,30 @@
   "name": "argon2",
   "version": "0.31.2",
   "description": "An Argon2 library for Node",
-  "main": "argon2.js",
+  "keywords": [
+    "argon2",
+    "crypto",
+    "encryption",
+    "hashing",
+    "password"
+  ],
+  "homepage": "https://github.com/ranisalt/node-argon2#readme",
+  "bugs": {
+    "url": "https://github.com/ranisalt/node-argon2/issues"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ranisalt/node-argon2.git"
+  },
+  "license": "MIT",
+  "author": "Ranieri Althoff <ranisalt+argon2@gmail.com>",
+  "type": "module",
+  "main": "argon2.mjs",
+  "module": "argon2.mjs",
+  "types": "argon2.d.mts",
   "files": [
     "argon2_node.cpp",
-    "argon2.d.ts",
+    "argon2.d.mts",
     "binding.gyp",
     "argon2/CHANGELOG.md",
     "argon2/LICENSE",
@@ -21,30 +41,22 @@
     "argon2/src/thread.c",
     "argon2/src/thread.h"
   ],
-  "types": "argon2.d.ts",
+  "binary": {
+    "module_name": "argon2",
+    "module_path": "./lib/binding/napi-v{napi_build_version}",
+    "remote_path": "v{version}",
+    "package_name": "{module_name}-v{version}-napi-v{napi_build_version}-{platform}-{arch}-{libc}.tar.gz",
+    "host": "https://github.com/ranisalt/node-argon2/releases/download/",
+    "napi_versions": [
+      3
+    ]
+  },
   "scripts": {
-    "install": "node-pre-gyp install --fallback-to-build",
     "format": "prettier --write \"*.{js,json,ts}\"",
-    "test": "c8 node --test test.js",
-    "test:ts": "tsc -p . && node test/test-d.js"
-  },
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/ranisalt/node-argon2.git"
-  },
-  "keywords": [
-    "argon2",
-    "crypto",
-    "encryption",
-    "hashing",
-    "password"
-  ],
-  "author": "Ranieri Althoff <ranisalt+argon2@gmail.com>",
-  "license": "MIT",
-  "bugs": {
-    "url": "https://github.com/ranisalt/node-argon2/issues"
+    "install": "node-pre-gyp install --fallback-to-build",
+    "test": "c8 node --test test.mjs",
+    "test:ts": "tsc -p ."
   },
-  "homepage": "https://github.com/ranisalt/node-argon2#readme",
   "dependencies": {
     "@mapbox/node-pre-gyp": "^1.0.11",
     "@phc/format": "^1.0.0",
@@ -57,26 +69,16 @@
     "prettier": "^3.0.0",
     "typescript": "^5.1.6"
   },
-  "binary": {
-    "module_name": "argon2",
-    "module_path": "./lib/binding/napi-v{napi_build_version}",
-    "host": "https://github.com/ranisalt/node-argon2/releases/download/",
-    "remote_path": "v{version}",
-    "package_name": "{module_name}-v{version}-napi-v{napi_build_version}-{platform}-{arch}-{libc}.tar.gz",
-    "napi_versions": [
-      3
-    ]
-  },
   "engines": {
     "node": ">=16.17.0"
   },
+  "collective": {
+    "type": "opencollective",
+    "url": "https://opencollective.com/node-argon2"
+  },
   "standard": {
     "ignore": [
       "test-d.js"
     ]
-  },
-  "collective": {
-    "type": "opencollective",
-    "url": "https://opencollective.com/node-argon2"
   }
 }
diff --git a/test-d.ts b/test-d.mts
similarity index 98%
rename from test-d.ts
rename to test-d.mts
index 2cf85c4..b46ade8 100644
--- a/test-d.ts
+++ b/test-d.mts
@@ -3,7 +3,7 @@
 
 /// <reference types="node" />
 
-import * as argon2 from "./argon2";
+import * as argon2 from "./argon2.mjs";
 
 const password = "password";
 const passwordBuffer = Buffer.from("password");
diff --git a/test.js b/test.mjs
similarity index 98%
rename from test.js
rename to test.mjs
index 51cdf35..c647e29 100644
--- a/test.js
+++ b/test.mjs
@@ -1,6 +1,6 @@
-const assert = require("node:assert/strict");
-const { describe, it } = require("node:test");
-const argon2 = require("./argon2.js");
+import assert from "node:assert/strict";
+import { describe, it } from "node:test";
+import * as argon2 from "./argon2.mjs";
 
 const { argon2i, argon2d, argon2id } = argon2;
 const password = "password";
diff --git a/tsconfig.json b/tsconfig.json
index 1775286..720f991 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,9 +1,9 @@
 {
   "compilerOptions": {
-    "target": "es2015",
-    "module": "commonjs",
-    "moduleResolution": "node",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "noEmit": true,
     "strict": true
   },
-  "files": ["test-d.ts"]
+  "files": ["test-d.mts"]
 }