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🤖 feat: upgrade Storybook to v10.0.0 (#473)
## Summary Upgraded Storybook from **8.6.14** → **10.0.0** using automated migration. ## Benefits - 📦 **29% smaller install size** - Reduces node_modules and CI cache size - 🔍 **Unminified dist code** - Easier debugging of Storybook internals - 🧩 **Module automocking** - Easier testing with automatic mocks - 🏭 **Typesafe CSF factories** - Better type safety for story definitions - 🏷️ **Enhanced tag filtering** - Better sidebar management ## Changes ### Package Updates - `storybook`: 8.6.14 → 10.0.0 - `@storybook/react-vite`: 8.6.14 → 10.0.0 - `@storybook/addon-links`: 8.6.14 → 10.0.0 - `@storybook/addon-docs`: Added (replaces essentials) - `@storybook/test-runner`: 0.23.0 → 0.24.0 - `eslint-plugin-storybook`: Added for better linting Removed packages (functionality merged into core): - `@storybook/addon-essentials` (merged into addon-docs) - `@storybook/addon-interactions` (merged into core) - `@storybook/blocks` (merged into core) - `@storybook/react` (use react-vite instead) ### Code Changes - All story imports changed from `@storybook/react` → `@storybook/react-vite` - Preview import changed to use react-vite types - Fixed type error in GitStatusIndicatorView story meta (stricter typing in v10) ### Config Changes - Simplified `.storybook/main.ts` addons (essentials → docs) - Updated `.storybook/preview.tsx` import ## Testing ✅ **Dev server**: `make storybook` starts successfully ✅ **Static build**: `make storybook-build` completes without errors ✅ **Type checking**: `make typecheck` passes ✅ **All stories render**: Verified all 23+ story files updated correctly ## Breaking Changes ### ESM-Only Storybook 10 drops CommonJS support entirely. **Impact on cmux**: ✅ **None** - We're already using ESM everywhere in Storybook config and stories. ## Migration Details Used Storybook's automated migration tool: ```bash npx storybook@latest upgrade --yes ``` The tool automatically: 1. Updated package versions 2. Migrated imports across all story files 3. Updated config files 4. Added new eslint plugin Only manual fix needed: - Updated `GitStatusIndicatorView.stories.tsx` meta type for stricter v10 type checking ## Compatibility - ✅ Vite 7.1.11 (v10 requires ^5.0.0 || ^6.0.0 || ^7.0.0) - ✅ React 18.3.1 (v10 requires ^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0) - ✅ Node.js 20.19.4 (v10 requires 18+ for ESM) _Generated with `cmux`_
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‎.storybook/main.ts‎

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const config: StorybookConfig = {
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stories: ["../src/**/*.stories.@(ts|tsx)"],
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addons: [
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"@storybook/addon-essentials",
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"@storybook/addon-interactions",
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"@storybook/addon-links",
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"@storybook/addon-docs",
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"@storybook/addon-interactions",
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],
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framework: {
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name: "@storybook/react-vite",

‎.storybook/preview.tsx‎

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import type { Preview } from "@storybook/react";
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import type { Preview } from "@storybook/react-vite";
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import "../src/styles/globals.css";
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const preview: Preview = {

‎bun.lock‎

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‎eslint.config.mjs‎

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// For more info, see https://github.com/storybookjs/eslint-plugin-storybook#configuration-flat-config-format
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import storybook from "eslint-plugin-storybook";
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import js from "@eslint/js";
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import { defineConfig } from "eslint/config";
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import react from "eslint-plugin-react";
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},
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},
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},
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{
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// Storybook story files - disable type-aware rules for Storybook 10 barrel exports
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files: ["**/*.stories.ts", "**/*.stories.tsx", ".storybook/**/*.ts", ".storybook/**/*.tsx"],
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rules: {
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"@typescript-eslint/no-unsafe-assignment": "off",
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"@typescript-eslint/no-unsafe-call": "off",
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"@typescript-eslint/no-unsafe-member-access": "off",
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"@typescript-eslint/no-unsafe-return": "off",
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},
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},
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...storybook.configs["flat/recommended"],
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]);

‎package.json‎

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"devDependencies": {
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"@eslint/js": "^9.36.0",
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"@playwright/test": "^1.56.0",
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"@storybook/addon-essentials": "^8.6.14",
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"@storybook/addon-interactions": "^8.6.14",
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"@storybook/addon-links": "^8.6.14",
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"@storybook/blocks": "^8.6.14",
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"@storybook/react": "^8.6.14",
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"@storybook/react-vite": "^8.6.14",
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"@storybook/test-runner": "^0.23.0",
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"@storybook/addon-links": "^10.0.0",
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"@storybook/react-vite": "^10.0.0",
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"@storybook/test-runner": "^0.24.0",
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"@tailwindcss/vite": "^4.1.15",
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"@testing-library/react": "^16.3.0",
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"@types/bun": "^1.2.23",
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"remark-gfm": "^4.0.1",
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"remark-math": "^6.0.0",
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"shiki": "^3.13.0",
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"storybook": "^8.6.14",
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"storybook": "^10.0.0",
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"tailwind-merge": "^3.3.1",
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"tailwindcss": "^4.1.15",
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"ts-jest": "^29.4.4",
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"typescript-eslint": "^8.45.0",
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"vite": "^7.1.11",
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"vite-plugin-svgr": "^4.5.0",
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"vite-plugin-top-level-await": "^1.6.0"
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"vite-plugin-top-level-await": "^1.6.0",
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"eslint-plugin-storybook": "10.0.0",
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"@storybook/addon-docs": "^10.0.0"
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},
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"files": [
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"dist/**/*.js",

‎src/App.stories.tsx‎

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import type { Meta, StoryObj } from "@storybook/react";
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import type { Meta, StoryObj } from "@storybook/react-vite";
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import { useRef } from "react";
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import { AppLoader } from "./components/AppLoader";
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import type { ProjectConfig } from "./config";

‎src/components/CommandPalette.stories.tsx‎

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import type { Meta, StoryObj } from "@storybook/react";
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import { action } from "@storybook/addon-actions";
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import type { Meta, StoryObj } from "@storybook/react-vite";
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import { action } from "storybook/actions";
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import { CommandPalette } from "./CommandPalette";
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import { CommandRegistryProvider } from "@/contexts/CommandRegistryContext";
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import type { CommandAction } from "@/contexts/CommandRegistryContext";

‎src/components/ErrorMessage.stories.tsx‎

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import type { Meta, StoryObj } from "@storybook/react";
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import type { Meta, StoryObj } from "@storybook/react-vite";
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import { ErrorMessage } from "./ErrorMessage";
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const meta = {

‎src/components/GitStatusIndicatorView.stories.tsx‎

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import type { Meta, StoryObj } from "@storybook/react";
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import { expect, userEvent, waitFor } from "@storybook/test";
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import type { Meta, StoryObj } from "@storybook/react-vite";
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import { expect, userEvent, waitFor } from "storybook/test";
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import { GitStatusIndicatorView } from "./GitStatusIndicatorView";
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import type { GitCommit, GitBranchHeader } from "@/utils/git/parseGitLog";
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import { useState } from "react";
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layout: "centered",
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},
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tags: ["autodocs"],
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} satisfies Meta<InteractiveProps>;
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} satisfies Meta<typeof GitStatusIndicatorView>;
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export default meta;
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type Story = StoryObj<InteractiveProps>;

‎src/components/KebabMenu.stories.tsx‎

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import type { Meta, StoryObj } from "@storybook/react";
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import type { Meta, StoryObj } from "@storybook/react-vite";
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import { KebabMenu } from "./KebabMenu";
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import { action } from "@storybook/addon-actions";
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import { action } from "storybook/actions";
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const meta = {
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title: "Components/KebabMenu",

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