diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..74c19c9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+/dist/
+/node_modules/
+/package-lock.json
+/pnpm-lock.yaml
+/shrinkwrap.yaml
+/yarn.lock
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 34d3bb3..87e9d68 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# v2.2.0
+
+- Expose proper ESM build (along with CJS build) using `pkg.exports` map
+
 # v2.1.1
 
 - Fix published types for `defiler.add(file)`
diff --git a/package.json b/package.json
index 1435aa4..8c12d4d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "defiler",
-	"version": "2.1.1",
+	"version": "2.2.0",
 	"description": "A small, strange building block",
 	"keywords": [
 		"build",
@@ -8,12 +8,19 @@
 		"async",
 		"watch"
 	],
-	"type": "module",
-	"main": "src/index.js",
+	"exports": {
+		".": {
+			"import": "./dist/index.mjs",
+			"require": "./dist/index.cjs"
+		},
+		"./package.json": "./package.json"
+	},
+	"main": "./dist/index.cjs",
+	"module": "./dist/index.mjs",
 	"types": "types/index.d.ts",
 	"files": [
 		"*.md",
-		"src",
+		"dist",
 		"types"
 	],
 	"engines": {
@@ -28,5 +35,14 @@
 	"bugs": {
 		"url": "https://github.com/Conduitry/defiler/issues"
 	},
-	"homepage": "https://conduitry.dev/defiler"
+	"homepage": "https://conduitry.dev/defiler",
+	"devDependencies": {
+		"@types/node": "=12",
+		"rollup": "^2"
+	},
+	"scripts": {
+		"build": "rollup -c",
+		"dev": "rollup -cw",
+		"prepare": "npm run build"
+	}
 }
diff --git a/rollup.config.js b/rollup.config.js
new file mode 100644
index 0000000..d9019e9
--- /dev/null
+++ b/rollup.config.js
@@ -0,0 +1,8 @@
+export default {
+	input: './src/index.js',
+	external: name => /^[a-z]/.test(name),
+	output: [
+		{ file: './dist/index.cjs', format: 'cjs', sourcemap: true, interop: false, preferConst: true },
+		{ file: './dist/index.mjs', format: 'esm', sourcemap: true, preferConst: true },
+	],
+};