diff --git a/shared/build-shared.js b/shared/build-shared.js
new file mode 100644
index 00000000..7ebd0665
--- /dev/null
+++ b/shared/build-shared.js
@@ -0,0 +1,28 @@
+import esbuild from "esbuild";
+
+esbuild
+  .build({
+    entryPoints: ["src/index.ts"],
+    bundle: true,
+    platform: "node",
+    sourcemap: true,
+    outdir: "dist",
+    format: "esm",
+    target: "esnext",
+    splitting: true,
+    outExtension: { ".js": ".esm.js" },
+  })
+  .catch(() => process.exit(1));
+
+esbuild
+  .build({
+    entryPoints: ["src/index.ts"],
+    bundle: true,
+    platform: "node",
+    sourcemap: true,
+    outdir: "dist",
+    format: "cjs",
+    target: "es2015",
+    outExtension: { ".js": ".cjs.js" },
+  })
+  .catch(() => process.exit(1));
diff --git a/shared/package.json b/shared/package.json
index 37e0ed87..e5a26673 100644
--- a/shared/package.json
+++ b/shared/package.json
@@ -2,14 +2,16 @@
   "name": "@editor-extensions/shared",
   "version": "0.0.1",
   "private": true,
-  "main": "./dist/index.js",
+  "main": "./dist/index.cjs.js",
+  "type": "module",
+  "module": "./dist/index.esm.js",
   "types": "./dist/index.d.ts",
   "scripts": {
     "clean": "rimraf dist",
     "lint": "eslint .",
     "lint:fix": "eslint --fix .",
     "prebuild": "npm run clean",
-    "build": "tsc --build",
+    "build": "node build-shared.js && tsc --emitDeclarationOnly",
     "dev": "tsc --build --watch --preserveWatchOutput"
   },
   "lint-staged": {
diff --git a/shared/tsconfig.json b/shared/tsconfig.json
index c21e4bd7..06b4a517 100644
--- a/shared/tsconfig.json
+++ b/shared/tsconfig.json
@@ -7,7 +7,9 @@
     "declaration": true,
     "declarationMap": true,
     "sourceMap": true,
-    "tsBuildInfoFile": "./dist/tsconfig.tsbuildinfo"
+    "tsBuildInfoFile": "./dist/tsconfig.tsbuildinfo",
+    "module": "ESNext",
+    "moduleResolution": "Node"
   },
   "include": ["src/**/*.ts"],
   "exclude": ["dist", "node_modules"]