diff --git a/.gitignore b/.gitignore
index fe243e8b..f972b2a5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,6 @@
 node_modules
 lib
 dist
-cjs
 *.tsbuildinfo
 .vscode
 .DS_STORE
diff --git a/packages/common/package.json b/packages/common/package.json
index 6ec34ce5..8647d4ec 100644
--- a/packages/common/package.json
+++ b/packages/common/package.json
@@ -7,13 +7,12 @@
   },
   "description": "API definitions for JourneyApps PowerSync",
   "type": "module",
-  "main": "dist/bundle.cjs",
+  "main": "dist/bundle.mjs",
   "module": "dist/bundle.mjs",
   "types": "lib/index.d.ts",
   "exports": {
     ".": {
       "import": "./dist/bundle.mjs",
-      "require": "./dist/bundle.cjs",
       "default": "./dist/bundle.mjs",
       "types": "./lib/index.d.ts"
     }
@@ -33,7 +32,7 @@
   },
   "homepage": "https://docs.powersync.com",
   "scripts": {
-    "build": "tsc -b && rollup -c rollup.config.mjs && rollup -c rollup-cjs.config.mjs",
+    "build": "tsc -b && rollup -c rollup.config.mjs",
     "clean": "rm -rf lib dist tsconfig.tsbuildinfo",
     "test": "vitest"
   },
diff --git a/packages/common/rollup-cjs.config.mjs b/packages/common/rollup-cjs.config.mjs
deleted file mode 100644
index 36a5d559..00000000
--- a/packages/common/rollup-cjs.config.mjs
+++ /dev/null
@@ -1,41 +0,0 @@
-import commonjs from '@rollup/plugin-commonjs';
-import inject from '@rollup/plugin-inject';
-import json from '@rollup/plugin-json';
-import nodeResolve from '@rollup/plugin-node-resolve';
-import terser from '@rollup/plugin-terser';
-
-export default (commandLineArgs) => {
-  const sourcemap = (commandLineArgs.sourceMap || 'true') == 'true';
-
-  // Clears rollup CLI warning https://github.com/rollup/rollup/issues/2694
-  delete commandLineArgs.sourceMap;
-
-  return {
-    // esm input is better, even for cjs output
-    input: 'lib/index.js',
-    output: {
-      file: 'dist/bundle.cjs',
-      format: 'cjs',
-      sourcemap: sourcemap
-    },
-    plugins: [
-      json(),
-      nodeResolve({ preferBuiltins: false, browser: true }),
-      commonjs({}),
-      inject({
-        Buffer: ['buffer', 'Buffer'],
-        ReadableStream: ['web-streams-polyfill/ponyfill', 'ReadableStream'],
-        // Used by can-ndjson-stream
-        TextDecoder: ['text-encoding', 'TextDecoder']
-      }),
-      terser()
-    ],
-    // This makes life easier
-    external: [
-      // This has dynamic logic - makes bundling hard
-      'cross-fetch',
-      // TODO: make the useDefaults logic better. Currently need access to this package directly
-      'js-logger'
-    ]
-  };
-};