diff --git a/theatre/devEnv/utils.ts b/theatre/devEnv/utils.ts
new file mode 100644
index 0000000..84a4beb
--- /dev/null
+++ b/theatre/devEnv/utils.ts
@@ -0,0 +1,60 @@
+import path from 'path'
+import {build} from 'esbuild'
+
+export const definedGlobals = {
+  global: 'window',
+  'process.env.version': JSON.stringify(
+    require('../studio/package.json').version,
+  ),
+}
+
+const a: any = 'hi'
+
+export function createBundles() {
+  for (const which of ['core', 'studio']) {
+    const pathToPackage = path.join(__dirname, '../', which)
+    const esbuildConfig: Parameters<typeof build>[0] = {
+      entryPoints: [path.join(pathToPackage, 'src/index.ts')],
+      target: ['firefox88', 'chrome90'],
+      loader: {'.png': 'file'},
+      bundle: true,
+      sourcemap: true,
+      define: definedGlobals,
+      external: ['@theatre/dataverse'],
+    }
+
+    if (which === 'core') {
+      esbuildConfig.platform = 'neutral'
+      esbuildConfig.mainFields = ['browser', 'module', 'main']
+      esbuildConfig.target = ['firefox57', 'chrome58']
+      esbuildConfig.conditions = ['browser', 'node']
+    }
+
+    build({
+      ...esbuildConfig,
+      outfile: path.join(pathToPackage, 'dist/index.cjs'),
+      format: 'cjs',
+    })
+
+    build({
+      ...esbuildConfig,
+      outfile: path.join(pathToPackage, 'dist/index.mjs'),
+      format: 'esm',
+    })
+
+    build({
+      ...esbuildConfig,
+      outfile: path.join(pathToPackage, 'dist/index.min.js'),
+      format: 'iife',
+      external: [],
+      minify: true,
+      globalName: `Theatre.${which}`,
+      legalComments: 'external',
+      platform: 'browser',
+      define: {
+        ...definedGlobals,
+        'process.env.NODE_ENV': JSON.stringify('production'),
+      },
+    })
+  }
+}
diff --git a/theatre/package.json b/theatre/package.json
index 2159c72..a0a4c96 100644
--- a/theatre/package.json
+++ b/theatre/package.json
@@ -6,18 +6,11 @@
   ],
   "scripts": {
     "typecheck": "tsc --build",
-    "build": "run-s _build:clean _build:declarations _build:clean:temp _bundle:production",
-    "prepare": "run-s build",
-    "_build:clean": "run-s _build:clean:temp _build:clean:dist",
-    "_build:clean:temp": "rimraf .temp",
-    "_build:clean:dist": "rimraf .dist",
-    "_build:declarations": "run-s _build:declarations:emit _build:declarations:bundle",
-    "_build:declarations:watch": "run-p _build:declarations:emit:watch _build:declarations:bundle:watch",
-    "_build:declarations:emit": "tsc --build",
-    "_build:declarations:emit:watch": "tsc --build tsconfig.json --watch --preserveWatchOutput",
-    "_build:declarations:bundle": "rollup -c devEnv/declarations-bundler/rollup.config.js",
-    "_build:declarations:bundle:watch": "rollup --watch --no-watch.clearScreen -c devEnv/declarations-bundler/rollup.config.js",
-    "_bundle:production": "node -r esbuild-register devEnv/bundle.ts"
+    "build:js": "node -r esbuild-register devEnv/bundle.ts",
+    "build:dts": "run-s typecheck build:dts:bundle",
+    "build:dts:bundle": "rollup -c devEnv/declarations-bundler/rollup.config.js",
+    "build": "run-p build:dts build:js",
+    "prepare": "run-s build"
   },
   "devDependencies": {
     "@babel/cli": "^7.14.3",