diff --git a/.circleci/config.yml b/.circleci/config.yml
index e9d39f674c39..423fad65d679 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -30,6 +30,7 @@ jobs:
       - run:
           name: Add examples/* to yarn workspace
           command: |
+            npm pkg delete workspaces[5]
             npm pkg delete workspaces[4]
             npm pkg delete workspaces[3]
             npm pkg delete workspaces[2]
diff --git a/.github/workflows/bundle_size.yml b/.github/workflows/bundle_size.yml
new file mode 100644
index 000000000000..18a373f53bf5
--- /dev/null
+++ b/.github/workflows/bundle_size.yml
@@ -0,0 +1,46 @@
+name: Bundle Size
+
+on:
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master ]
+    paths:
+      - 'packages/**'
+      - 'yarn.lock'
+      - 'examples/test-bundlesize/**'
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 1
+    - uses: actions/setup-node@v4
+      with:
+        node-version: '22'
+        cache: 'yarn'
+    - name: Install packages
+      env:
+        YARN_ENABLE_IMMUTABLE_INSTALLS: true
+      run: |
+        # npm pkg delete workspaces[5]
+        # npm pkg delete workspaces[4]
+        # npm pkg delete workspaces[3]
+        # npm pkg delete workspaces[1]
+        corepack enable
+        yarn install
+    - name: Build packages
+      run: |
+        yarn workspaces foreach -Wptiv --no-private run build:lib
+    - name: compressed-size-action
+      uses: preactjs/compressed-size-action@v2
+      continue-on-error: true
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"
+        build-script: "build:sizecompare"
+        pattern: "examples/test-bundlesize/dist/**/*.{js,json}"
+        exclude: "{examples/test-bundlesize/dist/manifest.json,**/*.LICENSE.txt,**/*.map,**/node_modules/**}"
+        minimum-change-threshold: 8
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
deleted file mode 100644
index 8b74a374837d..000000000000
--- a/.github/workflows/main.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-name: Compressed Size
-
-on:
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ master ]
-    paths:
-      - 'packages/**'
-      - 'yarn.lock'
-
-jobs:
-  compressed-size-build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v4
-      with:
-        fetch-depth: 1
-    - name: compressed-size-action
-      uses: preactjs/compressed-size-action@v2
-      continue-on-error: true
-      with:
-        repo-token: "${{ secrets.GITHUB_TOKEN }}"
-        build-script: "build:bundle"
diff --git a/examples/test-bundlesize/.babelrc.js b/examples/test-bundlesize/.babelrc.js
new file mode 100644
index 000000000000..217ee31f88bb
--- /dev/null
+++ b/examples/test-bundlesize/.babelrc.js
@@ -0,0 +1,3 @@
+module.exports = {
+  presets: [['@anansi', { polyfillMethod: false }], '@linaria'],
+};
diff --git a/examples/test-bundlesize/.gitignore b/examples/test-bundlesize/.gitignore
new file mode 100644
index 000000000000..620ba9e07f63
--- /dev/null
+++ b/examples/test-bundlesize/.gitignore
@@ -0,0 +1 @@
+dist-server
\ No newline at end of file
diff --git a/examples/test-bundlesize/LICENSE b/examples/test-bundlesize/LICENSE
new file mode 100644
index 000000000000..b032e82432f3
--- /dev/null
+++ b/examples/test-bundlesize/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2023 Nathaniel Tucker <me@ntucker.me>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/examples/test-bundlesize/package.json b/examples/test-bundlesize/package.json
new file mode 100644
index 000000000000..45dd50b6213e
--- /dev/null
+++ b/examples/test-bundlesize/package.json
@@ -0,0 +1,52 @@
+{
+  "name": "test-bundlesize",
+  "version": "0.1.0",
+  "packageManager": "yarn@4.6.0",
+  "description": "Testing Bundled Size",
+  "scripts": {
+    "lint": "eslint src --ext .ts,.tsx",
+    "format": "npm run lint --fix",
+    "test:type": "tsc",
+    "start": "anansi serve --dev ./src/index.tsx",
+    "start:server": "anansi serve ./dist-server/App.js -a",
+    "build": "webpack --mode=production",
+    "build:server": "webpack --mode=production --target=node --env entrypath=index.server.tsx",
+    "build:analyze": "BABEL_DISABLE_CACHE=1 BROWSERSLIST_ENV='modern' webpack --mode=production --env analyze",
+    "build:sizecompare": "BABEL_DISABLE_CACHE=1 BROWSERSLIST_ENV='modern' webpack --mode=production --env nohash",
+    "build:profile": "webpack --mode=production --env profile",
+    "test:pkg": "webpack --env check=nobuild",
+    "postinstall": "rm -rf node_modules/.cache"
+  },
+  "engines": {
+    "node": ">=18.0"
+  },
+  "browserslist": "extends @anansi/browserslist-config",
+  "keywords": [
+    "anansi"
+  ],
+  "devDependencies": {
+    "@anansi/babel-preset": "6.2.1",
+    "@anansi/browserslist-config": "^1.4.3",
+    "@anansi/webpack-config": "^20.0.0",
+    "@babel/core": "^7.22.15",
+    "@types/react": "*",
+    "@types/react-dom": "*",
+    "react-refresh": "*",
+    "typescript": "5.7.3",
+    "webpack": "*",
+    "webpack-cli": "*"
+  },
+  "dependencies": {
+    "@babel/runtime-corejs3": "^7.26.7",
+    "@data-client/img": "^0.14.0",
+    "@data-client/react": "^0.14.0",
+    "@data-client/rest": "^0.14.0",
+    "core-js": "^3.40.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0"
+  },
+  "main": "src/index.ts",
+  "types": "src/index.ts",
+  "private": true,
+  "license": "MIT"
+}
diff --git a/examples/test-bundlesize/src/index.tsx b/examples/test-bundlesize/src/index.tsx
new file mode 100644
index 000000000000..66ddac0a1d4d
--- /dev/null
+++ b/examples/test-bundlesize/src/index.tsx
@@ -0,0 +1,31 @@
+import { AsyncBoundary, DataProvider, useSuspense } from '@data-client/react';
+import React from 'react';
+import { createRoot } from 'react-dom/client';
+
+import { getCandles, TodoResource } from './resources';
+
+export const Doit = () => {
+  const a = useSuspense(getCandles, { product_id: 'BTC-USD' });
+  const todos = useSuspense(TodoResource.getList, { userId: 1 });
+  return (
+    <>
+      {a} hi {todos.length}
+    </>
+  );
+};
+export const second = React.memo(Doit);
+
+export default function Entry() {
+  return (
+    <DataProvider>
+      <AsyncBoundary>
+        <Doit />
+      </AsyncBoundary>
+    </DataProvider>
+  );
+}
+export const renderedElement = <Entry />;
+
+createRoot(document.getElementById('root') || document.body).render(
+  renderedElement,
+);
diff --git a/examples/test-bundlesize/src/resources.ts b/examples/test-bundlesize/src/resources.ts
new file mode 100644
index 000000000000..14049ef43f74
--- /dev/null
+++ b/examples/test-bundlesize/src/resources.ts
@@ -0,0 +1,67 @@
+import { Entity, resource, RestEndpoint, schema } from '@data-client/rest';
+
+// docs: https://docs.cloud.coinbase.com/exchange/reference/exchangerestapi_getproductcandles
+export const getCandles = new RestEndpoint({
+  urlPrefix: 'https://api.exchange.coinbase.com',
+  path: '/products/:product_id/candles',
+  searchParams: {} as {
+    granularity?: 60 | 300 | 900 | 3600 | 21600 | 86400;
+    start?: string | number;
+    end?: string | number;
+  },
+  process(value: CandleTuple[]) {
+    return value.map(candle => ({
+      timestamp: candle[0],
+      price_open: candle[3],
+    }));
+  },
+  pollFrequency: 60 * 1000,
+});
+
+type CandleTuple = [
+  timestamp: number,
+  price_low: number,
+  price_high: number,
+  price_open: number,
+  price_close: number,
+];
+export class Todo extends Entity {
+  id = 0;
+  userId = 0;
+  title = '';
+  completed = false;
+}
+export const TodoResource = resource({
+  urlPrefix: 'https://jsonplaceholder.typicode.com',
+  path: '/todos/:id',
+  searchParams: {} as { userId?: string | number } | undefined,
+  schema: Todo,
+  optimistic: true,
+});
+
+export class User extends Entity {
+  id = 0;
+  name = '';
+  username = '';
+  email = '';
+  website = '';
+  todos: Todo[] = [];
+
+  get profileImage() {
+    return `https://i.pravatar.cc/64?img=${this.id + 4}`;
+  }
+
+  static schema = {
+    todos: new schema.Collection([Todo], {
+      nestKey: (parent, key) => ({
+        userId: parent.id,
+      }),
+    }),
+  };
+}
+export const UserResource = resource({
+  urlPrefix: 'https://jsonplaceholder.typicode.com',
+  path: '/users/:id',
+  schema: User,
+  optimistic: true,
+});
diff --git a/examples/test-bundlesize/tsconfig.json b/examples/test-bundlesize/tsconfig.json
new file mode 100644
index 000000000000..62357fd6becd
--- /dev/null
+++ b/examples/test-bundlesize/tsconfig.json
@@ -0,0 +1,32 @@
+{
+  "compilerOptions": {
+    "outDir": "./dist",
+    "baseUrl": "./src",
+    "target": "esnext",
+    "module": "esnext",
+    "lib": [
+      "dom",
+      "esnext"
+    ],
+    "jsx": "react-jsx",
+    "declaration": true,
+    "strict": true,
+    "moduleResolution": "bundler",
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+    "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
+    "skipLibCheck": true,
+    "types": [
+      "@anansi/webpack-config/types"
+    ],
+    "noEmit": true
+  },
+  "include": [
+    "src"
+  ],
+  "exclude": [
+    "node_modules",
+    "dist"
+  ]
+}
diff --git a/examples/test-bundlesize/webpack.config.js b/examples/test-bundlesize/webpack.config.js
new file mode 100644
index 000000000000..6f8b33bfd476
--- /dev/null
+++ b/examples/test-bundlesize/webpack.config.js
@@ -0,0 +1,44 @@
+const { makeConfig } = require('@anansi/webpack-config');
+
+const options = {
+  basePath: 'src',
+  buildDir: 'dist/',
+  serverDir: 'dist-server/',
+  globalStyleDir: 'style',
+  sassOptions: false,
+};
+
+const generateConfig = makeConfig(options);
+
+module.exports = (env, argv) => {
+  const config = generateConfig(env, argv);
+  if (!config.experiments) config.experiments = {};
+  config.experiments.backCompat = false;
+  config.optimization.splitChunks = {
+    chunks: 'async',
+    maxInitialRequests: 3000,
+    maxAsyncRequests: 3000,
+    minSize: 1,
+    cacheGroups: {
+      react: {
+        test: /[\\/]node_modules[\\/](react|react-dom|scheduler|object-assign|loose-envify)[\\/]/,
+        name: 'react',
+        chunks: 'all',
+      },
+      polyfill: {
+        test: /[\\/]node_modules[\\/](core-js|core-js-pure|@babel\/runtime|@babel\/runtime-corejs3|regenerator-runtime|ric-shim|babel-runtime)[\\/].*/,
+        name: 'polyfill',
+        chunks: 'all',
+      },
+      rdc: {
+        test: /packages/,
+        name: 'rdc',
+        chunks: 'all',
+        priority: 10000,
+      },
+    },
+  };
+  return config;
+};
+
+module.exports.options = options;
diff --git a/package.json b/package.json
index 769a7403a330..f9bc5ff15e64 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "workspaces": [
     "packages/*",
     "examples/benchmark",
+    "examples/test-bundlesize",
     "examples/normalizr-*",
     "examples/coin-app",
     "website",
@@ -23,6 +24,7 @@
     "ci:build:legacy-types": "yarn workspaces foreach -WptivR -j 10 --from @data-client/react --from @data-client/rest --from @data-client/graphql run build:legacy-types",
     "ci:build-test-lib": "yarn workspace @data-client/test run build:lib && yarn workspace @data-client/test run build:bundle",
     "ci:build:esmodule": "yarn workspaces foreach -WptivR --from @data-client/react --from @data-client/rest --from @data-client/graphql run build:lib && yarn workspace @data-client/normalizr run build:js:node && yarn workspace @data-client/endpoint run build:js:node",
+    "ci:build:bundlesize": "yarn workspace test-bundlesize run build:sizecompare",
     "build:copy:ambient": "mkdirp ./packages/endpoint/lib && copyfiles --flat ./packages/endpoint/src/schema.d.ts ./packages/endpoint/lib/ && copyfiles --flat ./packages/endpoint/src/endpoint.d.ts ./packages/endpoint/lib/ && mkdirp ./packages/rest/lib && copyfiles --flat ./packages/rest/src/RestEndpoint.d.ts ./packages/rest/lib && copyfiles --flat ./packages/rest/src/next/RestEndpoint.d.ts ./packages/rest/lib/next && mkdirp ./packages/react/lib && copyfiles --flat ./packages/react/src/server/redux/redux.d.ts ./packages/react/lib/server/redux",
     "copy:websitetypes": "./scripts/copywebsitetypes.sh",
     "test": "NODE_ENV=test NODE_OPTIONS=--experimental-vm-modules run jest",
diff --git a/yarn.lock b/yarn.lock
index 1e6308a2cbd8..d36b815d5ff2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -28742,6 +28742,30 @@ __metadata:
   languageName: node
   linkType: hard
 
+"test-bundlesize@workspace:examples/test-bundlesize":
+  version: 0.0.0-use.local
+  resolution: "test-bundlesize@workspace:examples/test-bundlesize"
+  dependencies:
+    "@anansi/babel-preset": "npm:6.2.1"
+    "@anansi/browserslist-config": "npm:^1.4.3"
+    "@anansi/webpack-config": "npm:^20.0.0"
+    "@babel/core": "npm:^7.22.15"
+    "@babel/runtime-corejs3": "npm:^7.26.7"
+    "@data-client/img": "npm:^0.14.0"
+    "@data-client/react": "npm:^0.14.0"
+    "@data-client/rest": "npm:^0.14.0"
+    "@types/react": "npm:*"
+    "@types/react-dom": "npm:*"
+    core-js: "npm:^3.40.0"
+    react: "npm:^19.0.0"
+    react-dom: "npm:^19.0.0"
+    react-refresh: "npm:*"
+    typescript: "npm:5.7.3"
+    webpack: "npm:*"
+    webpack-cli: "npm:*"
+  languageName: unknown
+  linkType: soft
+
 "test-exclude@npm:^6.0.0":
   version: 6.0.0
   resolution: "test-exclude@npm:6.0.0"