diff --git a/src/lightweight.js b/src/lightweight.js
index f2b7529..08d4eb0 100644
--- a/src/lightweight.js
+++ b/src/lightweight.js
@@ -46,10 +46,16 @@ const got = async (url, opts) => {
   }
 }
 
-module.exports = factory({
+const mql = factory({
   MicrolinkError,
   urlHttp,
   got,
   flatten,
   VERSION: '__MQL_VERSION__'
 })
+
+module.exports = mql
+module.exports.MicrolinkError = mql.MicrolinkError
+module.exports.getApiUrl = mql.getApiUrl
+module.exports.mapRules = mql.mapRules
+module.exports.version = mql.version
diff --git a/test/build.mjs b/test/build.mjs
index 7b15bc6..36a8275 100644
--- a/test/build.mjs
+++ b/test/build.mjs
@@ -7,7 +7,8 @@ import test from 'ava'
 const require = createRequire(import.meta.url)
 const pkg = require('../package.json')
 
-const evalScript = code => $`node -e ${code}`
+const evalScript = (code) => $`node --eval ${code}`
+evalScript.esm = (code) => $`node --input-type module -e ${code}`
 
 test('cjs', async t => {
   // eslint-disable-next-line no-template-curly-in-string
@@ -15,3 +16,10 @@ test('cjs', async t => {
   const { stdout } = await evalScript(code)
   t.is(stdout, `mql v${pkg.version}`)
 })
+
+test('esm', async t => {
+  // eslint-disable-next-line no-template-curly-in-string
+  const code = "import {version} from '@microlink/mql'; console.log(`mql v${version}`)"
+  const { stdout } = await evalScript.esm(code)
+  t.is(stdout, `mql v${pkg.version}`)
+})