diff --git a/package.json b/package.json
index 5086bb8..f840fab 100644
--- a/package.json
+++ b/package.json
@@ -7,11 +7,12 @@
   "browser": "dist/lucia.min.js",
   "types": "dist/types/index.d.ts",
   "scripts": {
-    "dev": "npx rollup -c -w --environment BUILD:development",
-    "build": "npx del-cli dist/ && npx rollup -c --environment BUILD:production",
+    "dev": "npx esbuild src/browser.ts --bundle --watch --sourcemap --outfile=dist/lucia.js",
+    "build": "npx del-cli dist/ && npx rollup -c",
     "test": "npx jest --coverage --silent",
     "cleanup": "npx prettier -w src",
-    "coverage": "cat ./coverage/lcov.info | coveralls"
+    "coverage": "cat ./coverage/lcov.info | coveralls",
+    "prepublishOnly": "npm run build"
   },
   "repository": {
     "type": "git",
@@ -53,6 +54,7 @@
     "@testing-library/dom": "^7.28.1",
     "coveralls": "^3.1.0",
     "del-cli": "^3.0.1",
+    "esbuild": "^0.10.2",
     "jest": "^26.6.1",
     "prettier": "^2.1.2",
     "rollup": "2.42.4",
diff --git a/rollup.config.js b/rollup.config.js
index fae4dce..fd39459 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -1,6 +1,6 @@
-import commonjs from '@rollup/plugin-commonjs';
-import resolve from '@rollup/plugin-node-resolve';
 import typescript from 'rollup-plugin-typescript2';
+import resolve from '@rollup/plugin-node-resolve';
+import commonjs from '@rollup/plugin-commonjs';
 import { terser } from 'rollup-plugin-terser';
 import babel from '@rollup/plugin-babel';
 
@@ -12,7 +12,7 @@ const legacy = () => {
   });
 };
 
-const build = (input, config) => ({
+const generateConfig = (input, config) => ({
   input,
   external: [],
   plugins: [
@@ -28,7 +28,7 @@ const build = (input, config) => ({
   onwarn: () => {},
 });
 
-export const buildAll = (input, config) => {
+export const build = (input, config) => {
   const buildOutput = [];
 
   // Development build
@@ -50,53 +50,45 @@ export const buildAll = (input, config) => {
     strict: true,
   });
 
-  return build(input, {
+  return generateConfig(input, {
     output: buildOutput,
     legacy: config.legacy,
     target: config.target,
   });
 };
 
-const development = buildAll('./src/browser.ts', {
-  output: ['dist/lucia.js', 'dist/lucia.min.js'],
-  format: 'iife',
-  target: 'es2018',
-});
-
-const production = [
-  buildAll('./src/browser.ts', {
+export default [
+  build('./src/browser.ts', {
     output: ['dist/lucia.js', 'dist/lucia.min.js'],
     format: 'iife',
     target: 'es2018',
   }),
-  buildAll('./src/browser.ts', {
+  build('./src/browser.ts', {
     output: ['dist/legacy/lucia.js', 'dist/legacy/lucia.min.js'],
     format: 'iife',
     target: 'es5',
     legacy: true,
   }),
-  buildAll('./src/index.ts', {
+  build('./src/index.ts', {
     output: ['dist/lucia.esm.js', 'dist/lucia.esm.min.js'],
     format: 'esm',
     target: 'es2018',
   }),
-  buildAll('./src/index.ts', {
+  build('./src/index.ts', {
     output: ['dist/legacy/lucia.esm.js', 'dist/legacy/lucia.esm.min.js'],
     format: 'esm',
     target: 'es5',
     legacy: true,
   }),
-  buildAll('./src/index.ts', {
+  build('./src/index.ts', {
     output: ['dist/lucia.cjs.js', 'dist/lucia.cjs.min.js'],
     format: 'cjs',
     target: 'es2018',
   }),
-  buildAll('./src/index.ts', {
+  build('./src/index.ts', {
     output: ['dist/legacy/lucia.cjs.js', 'dist/legacy/lucia.cjs.min.js'],
     format: 'cjs',
     target: 'es5',
     legacy: true,
   }),
 ];
-
-export default process.env.BUILD === 'development' ? development : production;
diff --git a/src/browser.ts b/src/browser.ts
index 8645cb2..6426043 100644
--- a/src/browser.ts
+++ b/src/browser.ts
@@ -3,7 +3,7 @@ import * as Lucia from './index';
 if (document.readyState === 'loading') {
   document.addEventListener('DOMContentLoaded', () => {
     // @ts-expect-error
-    const customLuciaInit = window.customLuciaInit;
+    const customLuciaInit = window.LuciaInit;
 
     if (customLuciaInit) {
       customLuciaInit(Lucia.init);
diff --git a/src/core/reactive.ts b/src/core/reactive.ts
index 8c0540f..dd4dd09 100644
--- a/src/core/reactive.ts
+++ b/src/core/reactive.ts
@@ -26,7 +26,7 @@ export const reactive = (
       }
     },
     set(target: UnknownKV, key: string, value: unknown): boolean {
-      // Do not allow function mutation
+      // Do not allow function or special property mutation
       if (typeof state[key] === 'function' || key.startsWith('$')) return false;
 
       // Currently double renderes - bad perf
diff --git a/yarn.lock b/yarn.lock
index 09840ee..4a9af5f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1166,9 +1166,9 @@
     "@sinonjs/commons" "^1.7.0"
 
 "@testing-library/dom@^7.28.1":
-  version "7.30.0"
-  resolved "https://registry.yarnpkg.com/@testing-library/dom/-/dom-7.30.0.tgz#53697851f7708a1448cc30b74a2ea056dd709cd6"
-  integrity sha512-v4GzWtltaiDE0yRikLlcLAfEiiK8+ptu6OuuIebm9GdC2XlZTNDPGEfM2UkEtnH7hr9TRq2sivT5EA9P1Oy7bw==
+  version "7.30.1"
+  resolved "https://registry.yarnpkg.com/@testing-library/dom/-/dom-7.30.1.tgz#07b6f3ccd7f1f1e34ab0406932073e2971817f3d"
+  integrity sha512-RQUvqqq2lxTCOffhSNxpX/9fCoR+nwuQPmG5uhuuEH5KBAzNf2bK3OzBoWjm5zKM78SLjnGRAKt8hRjQA4E46A==
   dependencies:
     "@babel/code-frame" "^7.10.4"
     "@babel/runtime" "^7.12.5"
@@ -2125,6 +2125,11 @@ error-ex@^1.3.1:
   dependencies:
     is-arrayish "^0.2.1"
 
+esbuild@^0.10.2:
+  version "0.10.2"
+  resolved "https://registry.yarnpkg.com/esbuild/-/esbuild-0.10.2.tgz#caa65a8f3096d547d89159918039df6c5c6c90be"
+  integrity sha512-/5vsZD7wTJJHC3yNXLUjXNvUDwqwNoIMvFvLd9tcDQ9el5l13pspYm3yufavjIeYvNtAbo+6N/6uoWx9dGA6ug==
+
 escalade@^3.1.1:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.1.1.tgz#d8cfdc7000965c5a0174b4a82eaa5c0552742e40"