diff --git a/.babelrc b/babelrc.cjs.json
similarity index 85%
rename from .babelrc
rename to babelrc.cjs.json
index 77b4e0b9..1638d2a7 100644
--- a/.babelrc
+++ b/babelrc.cjs.json
@@ -5,7 +5,7 @@
       "@babel/preset-env",
       {
         "targets": {
-          "node": "10"
+          "node": "12"
         }
       }
     ]
diff --git a/babelrc.esm.json b/babelrc.esm.json
new file mode 100644
index 00000000..cca569ea
--- /dev/null
+++ b/babelrc.esm.json
@@ -0,0 +1,14 @@
+{
+  "presets": [
+    "@babel/preset-flow",
+    [
+      "@babel/preset-env",
+      {
+        "targets": {
+          "node": "12"
+        },
+        "modules": false
+      }
+    ]
+  ]
+}
diff --git a/package.json b/package.json
index 292ecded..9f602cb5 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
   "name": "@parcel/source-map",
   "version": "2.1.0",
   "main": "./dist/node.js",
+  "module": "./dist/node.mjs",
   "types": "index.d.ts",
   "license": "MIT",
   "repository": {
@@ -15,7 +16,9 @@
     "benchmark": "node ./bench/run",
     "benchmark:node": "cross-env BACKEND=node yarn benchmark",
     "benchmark:wasm": "cross-env BACKEND=wasm yarn benchmark",
-    "transpile": "babel ./src/*.js --out-dir ./dist && flow-copy-source -v src dist",
+    "transpile:cjs": "babel ./src/*.js --out-dir ./dist --config-file ./babelrc.cjs.json",
+    "transpile:esm": "babel ./src/*.js --out-dir ./dist --out-file-extension .mjs --config-file ./babelrc.esm.json",
+    "transpile": "yarn transpile:cjs && yarn transpile:esm && flow-copy-source -v src dist",
     "build:clean": "cd ./parcel_sourcemap_node && rm -rf artifacts && mkdir artifacts",
     "build:node": "yarn build:clean && node parcel_sourcemap_node/build.js",
     "build:node-release": "yarn build:clean && node parcel_sourcemap_node/build.js --release",