diff --git a/.eslintrc.js b/.eslintrc.js
deleted file mode 100644
index 4daa18f..0000000
--- a/.eslintrc.js
+++ /dev/null
@@ -1,86 +0,0 @@
-module.exports = {
-  'extends': [
-    'airbnb',
-    'prettier'
-  ],
-  'parser': '@typescript-eslint/parser',
-  'parserOptions': {
-    'ecmaVersion': 2018,
-    'sourceType': 'module',
-    'modules': true
-  },
-  'plugins': [
-    '@typescript-eslint'
-  ],
-  'settings': {
-    'import/resolver': {
-      'typescript': {
-      }
-    }
-  },
-  'rules': {
-    'quotes': [
-      2,
-      'single',
-      {
-        'allowTemplateLiterals': true
-      }
-    ],
-    'class-methods-use-this': 0,
-    'consistent-return': 0,
-    'func-names': 0,
-    'global-require': 0,
-    'guard-for-in': 0,
-    'import/no-duplicates': 0,
-    'import/no-dynamic-require': 0,
-    'import/no-extraneous-dependencies': 0,
-    'import/prefer-default-export': 0,
-    'lines-between-class-members': 0,
-    'no-await-in-loop': 0,
-    'no-bitwise': 0,
-    'no-console': 0,
-    'no-continue': 0,
-    'no-control-regex': 0,
-    'no-empty': 0,
-    'no-loop-func': 0,
-    'no-nested-ternary': 0,
-    'no-param-reassign': 0,
-    'no-plusplus': 0,
-    'no-restricted-globals': 0,
-    'no-restricted-syntax': 0,
-    'no-shadow': 0,
-    'no-underscore-dangle': 0,
-    'no-use-before-define': 0,
-    'prefer-const': 0,
-    'prefer-destructuring': 0,
-    'camelcase': 0,
-    'no-unused-vars': 0,          // in favor of '@typescript-eslint/no-unused-vars'
-    // 'indent': 0                // in favor of '@typescript-eslint/indent'
-    '@typescript-eslint/no-unused-vars': 'warn',
-    // '@typescript-eslint/indent': ['error', 2]        // this might conflict with a lot ongoing changes
-    '@typescript-eslint/no-array-constructor': 'error',
-    '@typescript-eslint/adjacent-overload-signatures': 'error',
-    '@typescript-eslint/class-name-casing': 'error',
-    '@typescript-eslint/interface-name-prefix': 'error',
-    '@typescript-eslint/no-empty-interface': 'error',
-    '@typescript-eslint/no-inferrable-types': 'error',
-    '@typescript-eslint/no-misused-new': 'error',
-    // '@typescript-eslint/no-namespace': 'error',
-    '@typescript-eslint/no-non-null-assertion': 'error',
-    '@typescript-eslint/no-parameter-properties': 'error',
-    '@typescript-eslint/no-triple-slash-reference': 'error',
-    '@typescript-eslint/prefer-namespace-keyword': 'error',
-    '@typescript-eslint/type-annotation-spacing': 'error',
-    // '@typescript-eslint/array-type': 'error',
-    // '@typescript-eslint/ban-types': 'error',
-    // '@typescript-eslint/explicit-function-return-type': 'warn',
-    // '@typescript-eslint/explicit-member-accessibility': 'error',
-    // '@typescript-eslint/member-delimiter-style': 'error',
-    // '@typescript-eslint/no-angle-bracket-type-assertion': 'error',
-    // '@typescript-eslint/no-explicit-any': 'warn',
-    // '@typescript-eslint/no-object-literal-type-assertion': 'error',
-    // '@typescript-eslint/no-use-before-define': 'error',
-    // '@typescript-eslint/no-var-requires': 'error',
-    // '@typescript-eslint/prefer-interface': 'error'
-  }
-}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b64cb9f..7e2e4d7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [6.x, 8.x, 10.x, 12.x]
+        node-version: [12.x, 14.x, 16.x]
 
     steps:
     - uses: actions/checkout@v1
diff --git a/package.json b/package.json
index c864768..c1c6f33 100644
--- a/package.json
+++ b/package.json
@@ -2,15 +2,16 @@
   "name": "data-uri-to-buffer",
   "version": "3.0.1",
   "description": "Generate a Buffer instance from a Data URI string",
-  "main": "dist/src/index.js",
-  "types": "dist/src/index.d.ts",
+  "type": "module",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
   "files": [
-    "dist/src"
+    "dist",
+    "src"
   ],
   "scripts": {
     "build": "tsc",
-    "test": "mocha --reporter spec dist/test/*.js",
-    "test-lint": "eslint src --ext .js,.ts",
+    "test": "jest",
     "prepublishOnly": "npm run build"
   },
   "repository": {
@@ -18,7 +19,7 @@
     "url": "git://github.com/TooTallNate/node-data-uri-to-buffer.git"
   },
   "engines": {
-    "node": ">= 6"
+    "node": ">= 12"
   },
   "keywords": [
     "data",
@@ -38,18 +39,24 @@
   "homepage": "https://github.com/TooTallNate/node-data-uri-to-buffer",
   "devDependencies": {
     "@types/es6-promisify": "^5.0.0",
-    "@types/mocha": "^5.2.7",
+    "@types/mocha": "^9.0.0",
     "@types/node": "^10.5.3",
-    "@typescript-eslint/eslint-plugin": "1.6.0",
-    "@typescript-eslint/parser": "1.1.0",
-    "eslint": "5.16.0",
-    "eslint-config-airbnb": "17.1.0",
-    "eslint-config-prettier": "4.1.0",
-    "eslint-import-resolver-typescript": "1.1.1",
-    "eslint-plugin-import": "2.16.0",
-    "eslint-plugin-jsx-a11y": "6.2.1",
-    "eslint-plugin-react": "7.12.4",
-    "mocha": "^6.2.0",
-    "typescript": "^3.5.3"
+    "jest": "^27.2.2",
+    "ts-jest": "^27.0.5",
+    "typescript": "^4.4.3"
+  },
+  "jest": {
+    "preset": "ts-jest",
+    "globals": {
+      "ts-jest": {
+        "diagnostics": false,
+        "isolatedModules": true
+      }
+    },
+    "verbose": false,
+    "testEnvironment": "node",
+    "testMatch": [
+      "<rootDir>/test/**/*.test.ts"
+    ]
   }
 }
diff --git a/src/index.ts b/src/index.ts
index 4c2255a..00e4446 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,12 +1,17 @@
+export interface MimeBuffer extends Buffer {
+	type: string;
+	typeFull: string;
+	charset: string;
+}
+
 /**
  * Returns a `Buffer` instance from the given data URI `uri`.
  *
  * @param {String} uri Data URI to turn into a Buffer instance
- * @return {Buffer} Buffer instance from Data URI
+ * @returns {Buffer} Buffer instance from Data URI
  * @api public
  */
-
-function dataUriToBuffer(uri: string): dataUriToBuffer.MimeBuffer {
+export function dataUriToBuffer(uri: string): MimeBuffer {
 	if (!/^data:/i.test(uri)) {
 		throw new TypeError(
 			'`uri` does not appear to be a Data URI (must begin with "data:")'
@@ -48,7 +53,7 @@ function dataUriToBuffer(uri: string): dataUriToBuffer.MimeBuffer {
 	// get the encoded data portion and decode URI-encoded chars
 	const encoding = base64 ? 'base64' : 'ascii';
 	const data = unescape(uri.substring(firstComma + 1));
-	const buffer = Buffer.from(data, encoding) as dataUriToBuffer.MimeBuffer;
+	const buffer = Buffer.from(data, encoding) as MimeBuffer;
 
 	// set `.type` and `.typeFull` properties to MIME type
 	buffer.type = type;
@@ -60,12 +65,4 @@ function dataUriToBuffer(uri: string): dataUriToBuffer.MimeBuffer {
 	return buffer;
 }
 
-namespace dataUriToBuffer { // eslint-disable-line no-redeclare
-	export interface MimeBuffer extends Buffer {
-		type: string;
-		typeFull: string;
-		charset: string;
-	}
-}
-
-export = dataUriToBuffer;
+export default dataUriToBuffer;
diff --git a/test/test.ts b/test/data-uri-to-buffer.test.ts
similarity index 99%
rename from test/test.ts
rename to test/data-uri-to-buffer.test.ts
index 534106d..09ace17 100644
--- a/test/test.ts
+++ b/test/data-uri-to-buffer.test.ts
@@ -1,7 +1,3 @@
-/**
- * Module dependencies.
- */
-
 import assert from 'assert';
 import dataUriToBuffer from '../src';
 
diff --git a/test/tsconfig.json b/test/tsconfig.json
new file mode 100644
index 0000000..e516b7f
--- /dev/null
+++ b/test/tsconfig.json
@@ -0,0 +1,4 @@
+{
+  "extends": "../tsconfig.json",
+  "include": ["**/*.ts"]
+}
diff --git a/tsconfig.json b/tsconfig.json
index 679c8ec..d88d5e6 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,17 +1,17 @@
 {
   "compilerOptions": {
     "strict": true,
-    "module": "CommonJS",
-    "target": "es2015",
+    "module": "es2020",
+    "target": "es2019",
     "esModuleInterop": true,
+    "moduleResolution": "node",
     "lib": ["esnext"],
     "outDir": "dist",
     "sourceMap": true,
     "declaration": true
   },
   "include": [
-    "src/**/*",
-    "test/**/*"
+    "src/**/*.ts",
   ],
   "exclude": [
     "node_modules"