## Vite

Vite-specific guidance for `nx import`. For generic import issues (pnpm globs, root deps, project references, name collisions, ESLint, frontend tsconfig base settings, `@nx/react` typings, Jest preset, non-Nx source handling), see `SKILL.md`.

---

### `@nx/vite/plugin` Typecheck Target

`@nx/vite/plugin` defaults `typecheckTargetName` to `"vite:typecheck"`. If the workspace expects `"typecheck"`, set it explicitly in `nx.json`. If `@nx/js/typescript` is also registered, rename one target to avoid conflicts (e.g. `"tsc-typecheck"` for the JS plugin).

Keep both plugins only if the workspace has non-Vite pure TS libraries — `@nx/js/typescript` handles those while `@nx/vite/plugin` handles Vite projects.

### @nx/vite Plugin Install Failure

Plugin init loads `vite.config.ts` before deps are available. **Fix**: `pnpm add -wD vite @vitejs/plugin-react` (or `@vitejs/plugin-vue`) first, then `pnpm exec nx add @nx/vite`.

### Vite `resolve.alias` and `__dirname` (Non-Nx Sources)

**`__dirname` undefined** (CJS-only): Replace with `fileURLToPath(new URL('./src', import.meta.url))` from `'node:url'`.

**`@/` path alias**: Vite's `resolve.alias` works at runtime but TS needs matching `"paths"`. Set `"baseUrl": "."` in project tsconfig.

**PostCSS/Tailwind**: Verify `content` globs resolve correctly after import.

### Missing TypeScript `types` (Non-Nx Sources)

Non-Nx tsconfigs may not declare all needed types. Ensure Vite projects include `"types": ["node", "vite/client"]` in their tsconfig.

### `noEmit` Fix: Vite-Specific Notes

See SKILL.md for the generic noEmit→composite fix. Vite-specific additions:

- Non-Nx Vite projects often have **both** `tsconfig.app.json` and `tsconfig.node.json` with `noEmit` — fix both
- Solution-style tsconfigs (`"files": [], "references": [...]`) may lack `extends`. Add `extends` pointing to the dest root `tsconfig.base.json` so base settings (`moduleResolution`, `lib`) apply.
- This is safe — Vite/Vitest ignore TypeScript emit settings.

### Dependency Version Conflicts

**Shared Vite deps (both frameworks):** `vite`, `vitest`, `jsdom`, `@types/node`, `typescript` (dev)

**Vite 6→7**: Typecheck fails (`Plugin<any>` type mismatch); build/serve still works. Fix: align versions.
**Vitest 3→4**: Usually works; type conflicts may surface in shared test utils.

---

## React Router 7 (Vite-Based)

React Router 7 (`@react-router/dev`) uses Vite under the hood with a `vite.config.ts` and a `react-router.config.ts`. The `@nx/vite/plugin` detects `vite.config.ts` and creates inferred targets.

### Targets

`@nx/vite/plugin` creates `build`, `dev`, `serve` targets. The `build` target invokes the script defined in `package.json` (usually `react-router build`), not `vite build` directly.

**No separate typecheck target from `@nx/vite/plugin`** — React Router 7 typegen is run as part of `typecheck` (e.g. `react-router typegen && tsc`). The `typecheck` target is inferred from the tsconfig. Keep the `typecheck` script in `package.json` if present; it is not rewritten.

### tsconfig Notes

React Router 7 uses a single `tsconfig.json` (no `tsconfig.app.json`/`tsconfig.node.json` split). It includes:

- `"rootDirs": [".", "./.react-router/types"]` — for generated type files; keep as-is
- `"paths": { "~/*": ["./app/*"] }` — self-referential alias; keep as-is
- `"noEmit": true` — replace with composite settings per SKILL.md

### Build Output

React Router 7 outputs to `build/` (not `dist/`). Add `build` to the dest root `.gitignore`.

### Generated Types Directory

React Router 7 generates `.react-router/` at the project root for route type generation. Add `.react-router` to the dest root `.gitignore`.

---

## TanStack Start (Vite-Based)

TanStack Start uses Vinxi under the hood, which wraps Vite. Projects have a standard `vite.config.ts` that `@nx/vite/plugin` detects normally.

### Targets

`@nx/vite/plugin` creates `build`, `dev`, `preview`, `serve-static`, `typecheck` targets. The `build` target runs `vite build` which invokes the TanStack Start Vinxi pipeline (produces both client and SSR bundles).

### tsconfig Notes

TanStack Start uses a single `tsconfig.json` with `"allowImportingTsExtensions": true` and `"noEmit": true`. Apply the standard noEmit → composite fix. `allowImportingTsExtensions` is compatible with `emitDeclarationOnly: true` — no change needed.

### `paths` Aliases

TanStack Start commonly uses `"#/*": ["./src/*"]` and `"@/*": ["./src/*"]`. These are self-referential — keep as-is for a single-project app.

### Uncommitted Source Repo

`create-tan-stack` initializes a git repo but does NOT make an initial commit. Before importing, commit first:

```bash
git -C /path/to/source add . && git -C /path/to/source commit -m "Initial commit"
```

### Generated and Build Directories

TanStack Start / Vinxi / Nitro generate several directories that must be added to the dest root `.gitignore`:

- `.vinxi` — Vinxi build cache
- `.tanstack` — TanStack generated files
- `.nitro` — Nitro build artifacts
- `.output` — server-side build output (SSR/edge)

These are not covered by `dist` or `build`.

---

## React-Specific

### React Dependencies

**Production:** `react`, `react-dom`
**Dev:** `@types/react`, `@types/react-dom`, `@vitejs/plugin-react`, `@testing-library/react`, `@testing-library/jest-dom`, `jsdom`
**ESLint (Nx sources):** `eslint-plugin-import`, `eslint-plugin-jsx-a11y`, `eslint-plugin-react`, `eslint-plugin-react-hooks`
**ESLint (`create-vite`):** `eslint-plugin-react-refresh`, `eslint-plugin-react-hooks` — self-contained flat configs can be left as-is
**Nx plugins:** `@nx/react` (generators), `@nx/vite`, `@nx/vitest`, `@nx/eslint`

### React TypeScript Configuration

Add `"jsx": "react-jsx"` — in `tsconfig.base.json` for single-framework workspaces, per-project for mixed (see Mixed section).

### React ESLint Config

```js
import nx from '@nx/eslint-plugin';
import baseConfig from '../../eslint.config.mjs';
export default [
  ...baseConfig,
  ...nx.configs['flat/react'],
  { files: ['**/*.ts', '**/*.tsx'], rules: {} },
];
```

### React Version Conflicts

React 18 (source) + React 19 (dest): pnpm may hoist mismatched `react-dom`, causing `TypeError: Cannot read properties of undefined (reading 'S')`. **Fix**: Align versions with `pnpm.overrides`.

### `@testing-library/jest-dom` with Vitest

If source used Jest: change import to `@testing-library/jest-dom/vitest` in test-setup.ts, add to tsconfig `types`.

---

## Vue-Specific

### Vue Dependencies

**Production:** `vue` (plus `vue-router`, `pinia` if used)
**Dev:** `@vitejs/plugin-vue`, `vue-tsc`, `@vue/test-utils`, `jsdom`
**ESLint:** `eslint-plugin-vue`, `vue-eslint-parser`, `@vue/eslint-config-typescript`, `@vue/eslint-config-prettier`
**Nx plugins:** `@nx/vue` (generators), `@nx/vite`, `@nx/vitest`, `@nx/eslint` (install AFTER deps — see below)

### Vue TypeScript Configuration

Add to `tsconfig.base.json` (single-framework) or per-project (mixed):

```json
{ "jsx": "preserve", "jsxImportSource": "vue", "resolveJsonModule": true }
```

### `vue-shims.d.ts`

Vue SFC files need a type declaration. Usually exists in each project's `src/` and imports cleanly. If missing:

```ts
declare module '*.vue' {
  import { defineComponent } from 'vue';
  const component: ReturnType<typeof defineComponent>;
  export default component;
}
```

### `vue-tsc` Auto-Detection

Both `@nx/js/typescript` and `@nx/vite/plugin` auto-detect `vue-tsc` when installed — no manual config needed. Remove source scripts like `"typecheck": "vue-tsc --noEmit"`.

### ESLint Plugin Installation Order (Critical)

`@nx/eslint` init **crashes** if Vue ESLint deps aren't installed first (it loads all config files).

**Correct order:**

1. `pnpm add -wD eslint@^9 eslint-plugin-vue vue-eslint-parser @vue/eslint-config-typescript @typescript-eslint/parser @nx/eslint-plugin typescript-eslint`
2. Create root `eslint.config.mjs`
3. Then `npx nx add @nx/eslint`

### Vue ESLint Config Pattern

```js
import vue from 'eslint-plugin-vue';
import vueParser from 'vue-eslint-parser';
import tsParser from '@typescript-eslint/parser';
import baseConfig from '../../eslint.config.mjs';
export default [
  ...baseConfig,
  ...vue.configs['flat/recommended'],
  {
    files: ['**/*.vue'],
    languageOptions: { parser: vueParser, parserOptions: { parser: tsParser } },
  },
  {
    files: ['**/*.ts', '**/*.tsx', '**/*.js', '**/*.jsx', '**/*.vue'],
    rules: { 'vue/multi-word-component-names': 'off' },
  },
];
```

**Important**: `vue-eslint-parser` override must come **AFTER** base config — `flat/typescript` sets the TS parser globally without a `files` filter, breaking `.vue` parsing.

`vue-eslint-parser` must be an explicit pnpm dependency (strict resolution prevents transitive import).

**Known issue**: Some generated Vue ESLint configs omit `vue-eslint-parser`. Use the pattern above instead.

---

## Mixed React + Vue

When both frameworks coexist, several settings become per-project.

### tsconfig `jsx` — Per-Project Only

- React: `"jsx": "react-jsx"` in project tsconfig
- Vue: `"jsx": "preserve"`, `"jsxImportSource": "vue"` in project tsconfig
- Root: **NO** `jsx` setting

### Typecheck — Auto-Detects Framework

`@nx/vite/plugin` uses `vue-tsc` for Vue projects and `tsc` for React automatically.

```json
{
  "plugins": [
    { "options": { "targetName": "lint" }, "plugin": "@nx/eslint/plugin" },
    {
      "options": {
        "buildTargetName": "build",
        "testTargetName": "test",
        "typecheckTargetName": "typecheck"
      },
      "plugin": "@nx/vite/plugin"
    }
  ]
}
```

Remove `@nx/js/typescript` if all projects use Vite. Keep it (renamed to `"tsc-typecheck"`) only for non-Vite pure TS libs.

### ESLint — Three-Tier Config

1. **Root**: Base rules only, no framework-specific rules
2. **React projects**: Extend root + `nx.configs['flat/react']`
3. **Vue projects**: Extend root + `vue.configs['flat/recommended']` + `vue-eslint-parser`

**Required packages**: Shared (`eslint@^9`, `@nx/eslint-plugin`, `typescript-eslint`, `@typescript-eslint/parser`), React (`eslint-plugin-import`, `eslint-plugin-jsx-a11y`, `eslint-plugin-react`, `eslint-plugin-react-hooks`), Vue (`eslint-plugin-vue`, `vue-eslint-parser`)

`@nx/react`/`@nx/vue` are for generators only — no target conflicts.

---

## Redundant npm Scripts After Import

`nx import` copies `package.json` verbatim, so npm scripts come along. For Vite-based projects `@nx/vite/plugin` already infers the same targets from `vite.config.ts` — the npm scripts just shadow the plugin with weaker `nx:run-script` wrappers (no first-class caching inputs/outputs). Remove them after import.

### Standalone Vite App (`create-vite`)

Remove the following scripts — every one is redundant:

| Script                        | Plugin replacement                                                           |
| ----------------------------- | ---------------------------------------------------------------------------- |
| `dev: vite`                   | `@nx/vite/plugin` → `dev`                                                    |
| `build: tsc -b && vite build` | `@nx/vite/plugin` → `build`; `typecheck` via `@nx/js/typescript` handles tsc |
| `preview: vite preview`       | `@nx/vite/plugin` → `preview`                                                |
| `lint: eslint .`              | `@nx/eslint/plugin` → `eslint:lint`                                          |

### TanStack Start

Remove `build`, `dev`, `preview`, and `test` scripts, but move any hardcoded `--port` flag to `vite.config.ts` first:

```ts
// vite.config.ts
export default defineConfig({
  server: { port: 3000 },  // replaces `vite dev --port 3000`
  ...
})
```

### React Router 7 — Keep ALL scripts

Do **not** remove React Router 7 scripts. They use the framework CLI (`react-router build`, `react-router dev`, `react-router-serve`) which is not interchangeable with plain `vite`:

- `typecheck` runs `react-router typegen && tsc` — typegen must precede `tsc` or it fails on missing route types
- `start` serves the SSR bundle — no plugin equivalent

---

## Fix Orders

### Nx Source

1. Generic fixes from SKILL.md (pnpm globs, root deps, executor paths, frontend tsconfig base settings, `@nx/react` typings)
2. Configure `@nx/vite/plugin` typecheck target
3. **React**: `jsx: "react-jsx"` (root or per-project)
4. **Vue**: `jsx: "preserve"` + `jsxImportSource: "vue"`; verify `vue-shims.d.ts`; install ESLint deps before `@nx/eslint`
5. **Mixed**: `jsx` per-project; remove/rename `@nx/js/typescript`
6. `nx sync --yes && nx reset && nx run-many -t typecheck,build,test,lint`

### Non-Nx Source (additional steps)

0. Import into `apps/<name>` (see SKILL.md: "Application vs Library Detection")
1. Generic fixes from SKILL.md (stale files cleanup, pnpm globs, rewritten scripts, target name prefixing, noEmit→composite, ESLint handling)
2. Fix `noEmit` in **all** tsconfigs (app, node, etc. — non-Nx projects often have multiple)
3. Add `extends` to solution-style tsconfigs so root settings apply
4. Fix `resolve.alias` / `__dirname` / `baseUrl`
5. Ensure `types` include `vite/client` and `node`
6. Install `@nx/vite` manually if it failed during import
7. Remove redundant npm scripts so `@nx/vite/plugin` infers them natively (see "Redundant npm Scripts" section)
8. **Vue**: Add `outDir` + `**/*.vue.d.ts` to ESLint ignores
9. Full verification

### Multiple-Source Imports

See SKILL.md for generic multi-import (name collisions, dep refs). Vite-specific: fix tsconfig `references` paths for alternate directories (`../../libs/` → `../../libs-beta/`).

### Non-Nx Source: React Router 7

1. Ensure source has at least one commit (see SKILL.md: "Source Repo Has No Commits")
2. `nx import` whole-repo into `apps/<name>` (see SKILL.md: "Application vs Library Detection") → auto-installs `@nx/vite`, `@nx/react`
3. Stale file cleanup: `node_modules/`, `package-lock.json`, `.gitignore`
4. Fix `tsconfig.json`: `noEmit` → `composite + emitDeclarationOnly + outDir + tsBuildInfoFile`
5. Add `build` and `.react-router` to dest root `.gitignore`
6. **Keep all npm scripts** — React Router 7 uses framework CLI (`react-router build/dev`), not plain vite (see "Redundant npm Scripts" above)
7. `npm install && nx reset && nx sync --yes`

### Non-Nx Source: TanStack Start

1. Ensure source has at least one commit — `create-tan-stack` does NOT auto-commit (see SKILL.md)
2. `nx import` whole-repo into `apps/<name>` (see SKILL.md: "Application vs Library Detection") → auto-installs `@nx/vite`, `@nx/vitest`
3. Stale file cleanup: `node_modules/`, `package-lock.json`, `.gitignore`
4. Fix `tsconfig.json`: `noEmit` → `composite + emitDeclarationOnly + outDir + tsBuildInfoFile`
5. Keep `allowImportingTsExtensions` — compatible with `emitDeclarationOnly: true`
6. Add `.vinxi`, `.tanstack`, `.nitro`, `.output` to dest root `.gitignore`
7. Move hardcoded `--port` from `dev` script into `vite.config.ts` (`server: { port: N }`)
8. Remove redundant npm scripts — `@nx/vite/plugin` infers `build`, `dev`, `preview`, `test` (see "Redundant npm Scripts" above)
9. `npm install && nx reset && nx sync --yes`

### Quick Reference: React vs Vue

| Aspect        | React                    | Vue                                       |
| ------------- | ------------------------ | ----------------------------------------- |
| Vite plugin   | `@vitejs/plugin-react`   | `@vitejs/plugin-vue`                      |
| Type checker  | `tsc`                    | `vue-tsc` (auto-detected)                 |
| SFC support   | N/A                      | `vue-shims.d.ts` needed                   |
| tsconfig jsx  | `"react-jsx"`            | `"preserve"` + `"jsxImportSource": "vue"` |
| ESLint parser | Standard TS              | `vue-eslint-parser` + TS sub-parser       |
| ESLint setup  | Straightforward          | Must install deps before `@nx/eslint`     |
| Test utils    | `@testing-library/react` | `@vue/test-utils`                         |

### Quick Reference: Vite-Based React Frameworks

| Aspect             | Vite (standalone) | React Router 7          | TanStack Start           |
| ------------------ | ----------------- | ----------------------- | ------------------------ |
| Build config       | `vite.config.ts`  | `vite.config.ts`        | `vite.config.ts`         |
| Build output       | `dist/`           | `build/`                | `dist/`                  |
| SSR bundle         | No                | Yes (`build/server/`)   | Yes (`dist/server/`)     |
| tsconfig layout    | app + node split  | Single tsconfig         | Single tsconfig          |
| Auto-committed     | Depends on tool   | Usually yes             | **No — commit first**    |
| `nx import` plugin | `@nx/vite`        | `@nx/vite`, `@nx/react` | `@nx/vite`, `@nx/vitest` |

---

## Iteration Log

### Scenario 6: Multiple non-Nx React apps (CRA, Next.js, React Router 7, TanStack Start, Vite) → TS preset (PASS)

- Sources: 5 standalone non-Nx repos with different build tools
- Dest: CNW ts preset (Nx 22.5.1), npm workspaces, `packages/*`
- Import: whole-repo for each, sequential into `packages/<name>`
- Pre-import fixes:
  1. Removed `packages/.gitkeep` and committed
  2. `git init && git add . && git commit` in Vite app (no git at all)
  3. `git add . && git commit` in TanStack app (git init'd but no commits)
- Import: `npm exec nx -- import <source> packages/<name> --source=. --ref=main --no-interactive`
  - Next.js import auto-installed `@nx/eslint`, `@nx/next`
  - React Router 7 import auto-installed `@nx/vite`, `@nx/react`, `@nx/docker` (Dockerfile present)
  - TanStack import auto-installed `@nx/vitest`
- Post-import fixes:
  1. Removed stale `node_modules/`, `package-lock.json`, `.gitignore` from each package
  2. Removed Nx-rewritten scripts from `board-games-nextjs/package.json` (had `"build": "nx next:build"`, etc.)
  3. Updated root `tsconfig.base.json`: `nodenext` → `bundler`, added `dom`/`dom.iterable` to lib, added `jsx: react-jsx`
  4. Added `build` to dest root `.gitignore` (CRA and React Router 7 output there)
  5. Fixed `noEmit` → `composite + emitDeclarationOnly` in: `board-games-vite/tsconfig.app.json`, `board-games-vite/tsconfig.node.json`, `board-games-react-router/tsconfig.json`, `board-games-tanstack/tsconfig.json`
  6. Fixed `tsBuildInfoFile` paths from `./node_modules/.tmp/...` to `./dist/...`
  7. Installed root `@types/react`, `@types/react-dom`, `@types/node`
- All targets green: `build` for all 5 projects; `typecheck` for Vite/React Router/TanStack; `next:build` for Next.js
