diff --git a/babel.config.js b/babel.config.js
index 1f3f880..82b44a3 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -1 +1 @@
-module.exports = { presets: ['@babel/preset-env'] };
+export default { presets: ['@babel/preset-env'] };
diff --git a/package.json b/package.json
index 90f26d3..d7fd8c7 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
   "name": "@kittycad/lib",
   "version": "0.0.17",
   "description": "Javascript library for KittyCAD API",
+  "type": "module",
   "keywords": [
     "hardward",
     "library",
@@ -21,19 +22,19 @@
   "exports": {
     ".": {
       "types": "./dist/types/src",
-      "import": "./dist/index.es.js",
-      "require": "./dist/index.js"
+      "import": "./dist/mjs/index.js",
+      "require": "./dist/cjs/index.js"
     }
   },
-  "main": "./dist/index.js",
-  "module": "./dist/index.es.js",
-  "browser": "./dist/index.umd.js",
+  "main": "./dist/cjs/index.js",
+  "module": "./dist/mjs/index.js",
+  "browser": "./dist/umd/index.js",
   "types": "./dist/types/src",
   "files": [
     "dist"
   ],
   "engines": {
-    "node": ">= 16.13 <17"
+    "node": ">= 16.13 <19"
   },
   "devDependencies": {
     "@babel/preset-env": "^7.18.9",
@@ -65,7 +66,7 @@
     "build:js": "rollup -c",
     "build:types": "tsc --emitDeclarationOnly",
     "build": "rimraf dist && npm run build:types && npm run build:js",
-    "gen": "ts-node --project ./tsconfig.gen.json ./src/modelsGen.ts && prettier --config .prettierrc --write ./src && prettier --config .prettierrc --write ./__tests__ && prettier --config .prettierrc --write ./kittycad.ts.patch.json",
+    "gen": "ts-node ./src/modelsGen.ts && prettier --config .prettierrc --write ./src && prettier --config .prettierrc --write ./__tests__ && prettier --config .prettierrc --write ./kittycad.ts.patch.json",
     "test": "jest",
     "tsc": "tsc"
   },
diff --git a/src/apiGen.ts b/src/apiGen.ts
index b30931e..e73e1cc 100644
--- a/src/apiGen.ts
+++ b/src/apiGen.ts
@@ -1,7 +1,8 @@
 import fsp from 'node:fs/promises';
 import { OpenAPIV3 } from 'openapi-types';
-import { observe, generate } from 'fast-json-patch';
 import { format } from 'prettier';
+import pkg from 'fast-json-patch';
+const { observe, generate } = pkg;
 
 export default async function apiGen(lookup: any) {
   const spec: OpenAPIV3.Document = JSON.parse(
diff --git a/tsconfig.gen.json b/tsconfig.gen.json
deleted file mode 100644
index 7048c29..0000000
--- a/tsconfig.gen.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "compilerOptions": {
-    "module": "CommonJS"
-  }
-}
diff --git a/tsconfig.json b/tsconfig.json
index d471605..a49191e 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -25,4 +25,8 @@
   },
   "exclude": ["node_modules", "dist"],
   "include": ["src/**/*", "__tests__/**/*"],
+  "ts-node": {
+    "esm": true,
+    "experimentalSpecifierResolution": "node",
+  }
 }