Full Code of 11ty/eleventy-plugin-vite for AI

Repository: 11ty/eleventy-plugin-vite
Branch: main
Commit: 411034f94c71
Files: 16
Total size: 21.4 KB

Directory structure:
gitextract_g145p6_b/

├── .eleventy.js
├── .git-blame-ignore-revs
├── .github/
│   ├── dependabot.yml
│   └── workflows/
│       ├── release.yml
│       └── test.yml
├── .gitignore
├── .prettierrc
├── EleventyVite.js
├── README.md
├── example/
│   ├── .eleventy.js
│   ├── package.json
│   └── src/
│       ├── assets/
│       │   └── main.css
│       └── index.njk
├── package.json
└── test/
    ├── .eleventy.test.js
    └── EleventyVite.test.js

================================================
FILE CONTENTS
================================================

================================================
FILE: .eleventy.js
================================================
import EleventyVite from "./EleventyVite.js";

import path from "node:path";
import { createRequire } from "module";
const require = createRequire(import.meta.url);
const pkg = require("./package.json");

/**
 * Options which can be passed to eleventy-plugin-vite
 * @typedef {Object} EleventyViteOptions
 * @property {string} tempFolderName
 * @property {import("vite").InlineConfig} [viteOptions]
 * @property {Object} [serverOptions]
 */

/**
 * @param {import('@11ty/eleventy/src/UserConfig').default} eleventyConfig
 * @param {EleventyViteOptions} options
 */
export default function (eleventyConfig, options = {}) {
	try {
		eleventyConfig.versionCheck(pkg["11ty"].compatibility);
	} catch (error) {
		eleventyConfig.logger.warn(
			`Warning: Eleventy Plugin (${pkg.name}) Compatibility: ${error.message}`,
		);
	}

	const eleventyVite = new EleventyVite(eleventyConfig, options);

	const publicDir = eleventyVite.options.viteOptions?.publicDir || "public";

	if (!path.relative(eleventyConfig.directories.output, publicDir)) {
		throw new Error(
			`${EleventyVite.LOGGER_PREFIX} Misconfiguration: Can't use the same directory for 11ty output and vite public directory`,
		);
	}

	// Add publicDir to passthrough copy
	eleventyConfig.addPassthroughCopy(publicDir);

	// Add tempFolder to ignores
	eleventyConfig.ignores.add(eleventyVite.getIgnoreDirectory());

	const serverOptions = Object.assign(
		{
			module: "@11ty/eleventy-dev-server",
			domDiff: false,
		},
		options.serverOptions,
	);

	serverOptions.setup = async () => {
		// Use Vite as Middleware
		const viteDevServer = await eleventyVite.getServer();

		process.on("SIGINT", async () => {
			await viteDevServer.close();
		});

		return {
			middleware: [viteDevServer.middlewares],
		};
	};

	eleventyConfig.setServerOptions(serverOptions);

	// Run Vite build
	// TODO use `build.write` option to work with json or ndjson outputs
	eleventyConfig.on("eleventy.after", async ({ dir, runMode, outputMode, results }) => {
		// Skips the Vite build if:
		//   --serve
		//   --to=json
		//   --to=ndjson
		//   or 0 output files from Eleventy build
		// Notably, this *does* run Vite build in --watch mode
		if (
			runMode === "serve" ||
			outputMode === "json" ||
			outputMode === "ndjson" ||
			results.length === 0
		) {
			return;
		}

		await eleventyVite.runBuild(results);
	});
}


================================================
FILE: .git-blame-ignore-revs
================================================
# chore: add prettier
d76b34ffaf428752558b2d99f0e4a4163edda760


================================================
FILE: .github/dependabot.yml
================================================
version: 2
updates:
  - package-ecosystem: npm
    directory: /
    schedule:
      interval: weekly
    assignees: [KiwiKilian]

  - package-ecosystem: github-actions
    directories: [/, ".github/workflows/**"]
    schedule:
      interval: weekly
    assignees: [KiwiKilian]


================================================
FILE: .github/workflows/release.yml
================================================
name: Publish Release to npm
on:
  release:
    types: [published]
permissions: read-all
jobs:
  build:
    runs-on: ubuntu-latest
    environment: GitHub Publish
    permissions:
      contents: read
      id-token: write
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # 6.0.2
      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # 6.4.0
        with:
          node-version: "24"
          registry-url: "https://registry.npmjs.org"
      - run: npm install -g npm@latest
      - run: npm ci
      - if: ${{ github.event.release.tag_name != '' && env.NPM_PUBLISH_TAG != '' }}
        run: npm publish --provenance --access=public --tag=${{ env.NPM_PUBLISH_TAG }}
        env:
          NPM_PUBLISH_TAG: ${{ contains(github.event.release.tag_name, '-alpha.') && 'alpha' || 'latest' }}


================================================
FILE: .github/workflows/test.yml
================================================
name: Run Tests
on:
  push:
    branches: [main, alpha]
  pull_request:
    branches: [main, alpha]
  merge_group:
    branches: [main, alpha]
jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # 4.2.2
      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # 4.4.0
        with:
          node-version: "24"
      - run: npm ci
      - run: npm test


================================================
FILE: .gitignore
================================================
# Build results
_site

# IDEs
/.idea/
/.vscode/

# Package managers
node_modules
.npm

# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*

# Artefacts
.DS_Store


================================================
FILE: .prettierrc
================================================
{
	"useTabs": true,
	"singleQuote": false,
	"semi": true,
	"endOfLine": "lf",
	"arrowParens": "always",
	"printWidth": 100
}


================================================
FILE: EleventyVite.js
================================================
import { promises as fsp } from "node:fs";
import path from "node:path";
import { DeepCopy, Merge } from "@11ty/eleventy-utils";
import { build, createServer } from "vite";

/** @type {Required<import(".eleventy.js").EleventyViteOptions>} */
const DEFAULT_OPTIONS = {
	tempFolderName: ".11ty-vite",
	viteOptions: {
		clearScreen: false,
		appType: "mpa",
		server: {
			middlewareMode: true,
		},
		build: {
			emptyOutDir: true,
			rolldownOptions: {
				// HTML files will be injected and merged into `input` for MPA
			},
		},
		resolve: {
			alias: {
				// Allow references to `node_modules` directly for bundling.
				"/node_modules": path.resolve(".", "node_modules"),
				// Note that bare module specifiers are also supported
			},
		},
	},
};

export default class EleventyVite {
	static LOGGER_PREFIX = "[11ty/eleventy-plugin-vite]";

	/** @type {import("@11ty/eleventy/src/Util/ProjectDirectories.js").default} */
	directories;

	/** @type {import("@11ty/eleventy/src/Util/ConsoleLogger.js").default} */
	logger;

	/** @type {Required<import(".eleventy.js").EleventyViteOptions>} */
	options;

	constructor(eleventyConfig, pluginOptions = {}) {
		this.directories = eleventyConfig.directories;
		this.logger = eleventyConfig.logger;

		// Relevant until `rollupOptions` are removed
		pluginOptions = DeepCopy({}, pluginOptions);
		const userBuildOptions = pluginOptions.viteOptions?.build;
		if (userBuildOptions?.rollupOptions && !userBuildOptions?.rolldownOptions) {
			this.logger.logWithOptions({
				prefix: EleventyVite.LOGGER_PREFIX,
				message: "Usage of `rollupOptions` is deprecated, use `rolldownOptions` instead",
				type: "info",
			});

			userBuildOptions.rolldownOptions = userBuildOptions.rollupOptions;
			delete userBuildOptions.rollupOptions;
		}

		this.options = Merge({}, DEFAULT_OPTIONS, pluginOptions);
	}

	getServer() {
		/** @type {import("vite").InlineConfig} */
		const viteOptions = DeepCopy({}, this.options.viteOptions);
		viteOptions.root = this.directories.output;

		return createServer(viteOptions);
	}

	getIgnoreDirectory() {
		return path.join(this.options.tempFolderName, "**");
	}

	get tempFolderPath() {
		return path.resolve(this.options.tempFolderName);
	}

	static getEntryPointName(filePath) {
		return path
			.join(path.dirname(filePath), path.basename(filePath, path.extname(filePath)))
			.replace(/^\/+/, "");
	}

	getEleventyRolldownOptionsInput(input) {
		return (
			input
				// Filter out `false` serverless routes
				.filter((entry) => !!entry.outputPath)
				// Only HTML output
				.filter((entry) => (entry.outputPath ?? "").endsWith(".html"))
				.reduce((result, entry) => {
					if (!entry.outputPath.startsWith(this.directories.output)) {
						throw new Error(
							`Unexpected output path (was not in output directory ${this.directories.output}): ${entry.outputPath}`,
						);
					}

					const filePath = entry.outputPath.substring(this.directories.output.length);
					result[EleventyVite.getEntryPointName(filePath)] = path.resolve(
						this.tempFolderPath,
						filePath,
					);

					return result;
				}, {})
		);
	}

	getUserRolldownOptionsInput(input) {
		let userInput = {};

		if (input) {
			if (Array.isArray(input)) {
				input.forEach((file) => {
					userInput[EleventyVite.getEntryPointName(file)] = file;
				});
			} else if (typeof input === "object") {
				userInput = input;
			} else if (typeof input === "string") {
				userInput[EleventyVite.getEntryPointName(input)] = input;
			}
		}

		return userInput;
	}

	async runBuild(input) {
		await fsp.rename(this.directories.output, this.tempFolderPath);

		try {
			/** @type {import("vite").InlineConfig} */
			const viteOptions = DeepCopy({}, this.options.viteOptions);
			viteOptions.root = this.tempFolderPath;
			viteOptions.build.outDir = path.resolve(".", this.directories.output);
			viteOptions.build.rolldownOptions.input = {
				...this.getEleventyRolldownOptionsInput(input),
				...this.getUserRolldownOptionsInput(viteOptions.build.rolldownOptions.input),
			};

			this.logger.logWithOptions({
				prefix: EleventyVite.LOGGER_PREFIX,
				message: "Starting Vite build",
				type: "info",
			});

			await build(viteOptions);

			this.logger.logWithOptions({
				prefix: EleventyVite.LOGGER_PREFIX,
				message: "Finished Vite build",
				type: "info",
			});
		} catch (error) {
			this.logger.logWithOptions({
				prefix: EleventyVite.LOGGER_PREFIX,
				message: `Encountered a Vite build error, restoring original Eleventy output to ${this.directories.output}`,
				type: "error",
				color: "red",
			});
			this.logger.logWithOptions({
				prefix: EleventyVite.LOGGER_PREFIX,
				message: "Vite error:",
				type: "error",
			});
			this.logger.logWithOptions({
				prefix: EleventyVite.LOGGER_PREFIX,
				message: JSON.stringify(error, null, 2),
				type: "error",
				color: "cyan",
			});

			await fsp.rename(this.tempFolderPath, this.directories.output);

			throw error;
		} finally {
			await fsp.rm(this.tempFolderPath, { force: true, recursive: true });
		}
	}
}


================================================
FILE: README.md
================================================
<p align="center"><img src="https://www.11ty.dev/img/logo-github.svg" width="200" height="200" alt="11ty Logo">&#160;&#160;<img src="https://v1.image.11ty.dev/https%3A%2F%2Fvitejs.dev%2Flogo.svg/png/200x200/" alt="Vite logo" width="200" height="200"></p>

# eleventy-plugin-vite 🕚⚡️🎈🐀

A plugin to use [Vite](https://vitejs.dev/) with Eleventy.

This plugin:

- Runs Vite as Middleware in Eleventy Dev Server (try with Eleventy’s `--incremental`)
- Runs Vite build to postprocess your Eleventy build output

## Eleventy Housekeeping

- Please star [Eleventy on GitHub](https://github.com/11ty/eleventy/)!
- Follow us on Mastodon [@eleventy@fosstodon.org](https://fosstodon.org/@eleventy) or Twitter [@eleven_ty](https://twitter.com/eleven_ty)
- Join us on [Discord](https://www.11ty.dev/blog/discord/)
- Support [11ty on Open Collective](https://opencollective.com/11ty)
- [11ty on npm](https://www.npmjs.com/org/11ty)
- [11ty on GitHub](https://github.com/11ty)

[![npm Version](https://img.shields.io/npm/v/@11ty/eleventy-plugin-vite.svg?style=for-the-badge)](https://www.npmjs.com/package/@11ty/eleventy-plugin-vite)

## Installation

```
npm install @11ty/eleventy-plugin-vite@alpha --save-dev
```

### ESM `.eleventy.js` Config

```js
import EleventyVitePlugin from "@11ty/eleventy-plugin-vite";

export default function (eleventyConfig) {
	eleventyConfig.addPlugin(EleventyVitePlugin);
}
```

### CommonJS `.eleventy.js` Config

> [!NOTE]
> This plugin is written in ESM, therefore `require` is not possible. If your .eleventy.js config uses CommonJS, make it async and create a dynamic import as shown below.

```js
module.exports = async function (eleventyConfig) {
	const EleventyPluginVite = (await import("@11ty/eleventy-plugin-vite")).default;

	eleventyConfig.addPlugin(EleventyPluginVite);
};
```

Read more about ESM vs CommonJS on the [Eleventy documentation](https://www.11ty.dev/docs/cjs-esm/).

### Options

These are the default options of the plugin. There's no need to specify them unless you want to change them.

```js
import EleventyVitePlugin from "@11ty/eleventy-plugin-vite";

export default function (eleventyConfig) {
	eleventyConfig.addPlugin(EleventyVitePlugin, {
        // Default name of the temp folder
		tempFolderName: ".11ty-vite",

		// Eleventy Dev Server Options
		serverOptions: {
			module: "@11ty/eleventy-dev-server",
			domDiff: false,
		},

		// Vite Config
		viteOptions: {
			clearScreen: false,
			appType: "mpa",
			server: {
				middlewareMode: true,
			},
			build: {
				emptyOutDir: true,
				rolldownOptions: {
					input: {
						// HTML entry points will be injected automatically
						// Custom input will be merged
					},
				},
			},
			resolve: {
				alias: {
					// Allow references to `node_modules` directly for bundling.
					"/node_modules": path.resolve(".", "node_modules"),
					// Note that bare module specifiers are also supported
				},
			},
		},
	});
}
```

View the [full list of Vite configuration options](https://vitejs.dev/config/). Custom viteOptions will be deeply merged with the defaults.

## Related Projects

- [`eleventy-plus-vite`](https://github.com/matthiasott/eleventy-plus-vite) by @matthiasott: A starter template using this plugin
- Currently unmaintained:
  - [`slinkity`](https://slinkity.dev/) by @Holben888: A much deeper and more comprehensive integration with Vite! Offers partial hydration and can use shortcodes to render framework components in Eleventy!
  - [`vite-plugin-eleventy`](https://www.npmjs.com/package/vite-plugin-eleventy) by @Snugug: Uses Eleventy as Middleware in Vite (instead of the post-processing approach used here)


================================================
FILE: example/.eleventy.js
================================================
import EleventyVitePlugin from "../.eleventy.js";

export default function (eleventyConfig) {
	eleventyConfig.addPassthroughCopy("src/assets");

	eleventyConfig.addPlugin(EleventyVitePlugin);
}

export const config = {
	dir: {
		input: "src",
	},
};


================================================
FILE: example/package.json
================================================
{
	"name": "eleventy-plugin-vite-example",
	"private": true,
	"type": "module"
}


================================================
FILE: example/src/assets/main.css
================================================
body {
	background-color: black;
	color: white;
	font-family: sans-serif;
}


================================================
FILE: example/src/index.njk
================================================
<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <title>Eleventy Plugin Vite</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />

    <link rel="stylesheet" href="{{ '/assets/main.css' | url }}" />
  </head>

  <body>
    <h1>Eleventy Plugin Vite</h1>
  </body>
</html>


================================================
FILE: package.json
================================================
{
	"name": "@11ty/eleventy-plugin-vite",
	"version": "8.0.0",
	"description": "A plugin to use Vite as a development server and run Vite to postprocess your Eleventy build.",
	"license": "MIT",
	"engines": {
		"node": "^20.19.0 || >=22.12.0"
	},
	"funding": {
		"type": "opencollective",
		"url": "https://opencollective.com/11ty"
	},
	"keywords": [
		"eleventy",
		"server"
	],
	"11ty": {
		"compatibility": ">=3.0.0"
	},
	"publishConfig": {
		"access": "public"
	},
	"contributors": [
		{
			"name": "Zach Leatherman",
			"email": "zachleatherman@gmail.com",
			"url": "https://zachleat.com/"
		},
		{
			"name": "Kilian Finger",
			"email": "npm@kilianfinger.com",
			"url": "https://www.kilianfinger.com/"
		}
	],
	"repository": {
		"type": "git",
		"url": "git://github.com/11ty/eleventy-plugin-vite.git"
	},
	"bugs": "https://github.com/11ty/eleventy-plugin-vite/issues",
	"homepage": "https://github.com/11ty/eleventy-plugin-vite/",
	"main": "./.eleventy.js",
	"type": "module",
	"exports": {
		".": "./.eleventy.js",
		"./EleventyVite": "./EleventyVite.js",
		"./package.json": "./package.json"
	},
	"files": [
		".eleventy.js",
		"EleventyVite.js"
	],
	"scripts": {
		"test": "vitest",
		"format": "prettier . --write",
		"example": "cd example && eleventy",
		"example:start": "npm run example -- --serve",
		"example:build": "npm run example",
		"example:clean": "rimraf ./example/_site"
	},
	"dependencies": {
		"@11ty/eleventy-utils": "^2.0.7",
		"vite": "^8.0.9"
	},
	"devDependencies": {
		"@11ty/eleventy": "3.1.5",
		"prettier": "3.8.3",
		"vitest": "3.2.4"
	}
}


================================================
FILE: test/.eleventy.test.js
================================================
import { describe, it, expect, vi } from "vitest";
import eleventyPlugin from "../.eleventy.js";

describe(".eleventy.js", () => {
	it("sets up passthrough, ignores, and server options", () => {
		const ignores = new Set();

		const eleventyConfig = {
			directories: { output: "dist" },
			addPassthroughCopy: vi.fn(),
			ignores,
			setServerOptions: vi.fn(),
			on: vi.fn(),
			logger: { warn: vi.fn() },
			versionCheck: vi.fn(),
		};

		eleventyPlugin(eleventyConfig, { tempFolderName: ".test-11ty-vite" });

		expect(eleventyConfig.addPassthroughCopy).toHaveBeenCalled();
		expect([...ignores].some((i) => i.includes(".test-11ty-vite"))).toBe(true);
		expect(eleventyConfig.setServerOptions).toHaveBeenCalled();
		expect(typeof eleventyConfig.setServerOptions.mock.calls[0][0].setup).toBe("function");
		expect(eleventyConfig.on).toHaveBeenCalled();
	});
});


================================================
FILE: test/EleventyVite.test.js
================================================
import { describe, it, beforeEach, afterEach, expect } from "vitest";
import fs from "node:fs/promises";
import path from "node:path";
import EleventyVite from "../EleventyVite.js";

const outputPath = ".test-output";
const htmlFilePath = path.join(outputPath, "index.html");
const tempFolderName = ".test-11ty-vite";

const mockEleventyConfig = {
	directories: { output: outputPath },
	logger: {
		logWithOptions: () => {},
	},
};
const pluginOptions = {
	tempFolderName,
	viteOptions: {
		logLevel: "silent",
	},
};

describe("EleventyVite", () => {
	beforeEach(async () => {
		await fs.rm(outputPath, { recursive: true, force: true }).catch(() => {});
		await fs.mkdir(outputPath, { recursive: true });
		await fs.writeFile(path.join(outputPath, "style.css"), "body { color: red; }");
		await fs.writeFile(
			htmlFilePath,
			`<html><head><link rel="stylesheet" href="style.css"></head><body></body></html>`,
		);
	});

	afterEach(async () => {
		await fs.rm(outputPath, { recursive: true, force: true }).catch(() => {});
		await fs.rm(tempFolderName, { recursive: true, force: true }).catch(() => {});
	});

	it("constructor merges options", () => {
		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);
		expect(plugin.options.tempFolderName).toBe(tempFolderName);
		expect(plugin.options.viteOptions).toBeTruthy();
		expect(plugin.options.viteOptions.appType).toBe("mpa");
	});

	it("getServer returns a Vite dev server", async () => {
		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);
		const server = await plugin.getServer();
		expect(server.middlewares).toBeTruthy();
		await server.close();
	});

	it("getIgnoreDirectory returns correct path", () => {
		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);
		expect(plugin.getIgnoreDirectory()).toBe(path.join(tempFolderName, "**"));
	});

	it("outputs HTML file to output path during build", async () => {
		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);
		const input = [{ outputPath: htmlFilePath }];

		await plugin.runBuild(input);

		const stat = await fs.stat(htmlFilePath);
		expect(stat.isFile()).toBe(true);
	});

	it("runBuild runs Vite build and cleans up", async () => {
		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);
		const input = [{ outputPath: htmlFilePath }];
		await expect(plugin.runBuild(input)).resolves.not.toThrow();

		const exists = await fs.stat(tempFolderName).then(
			() => true,
			() => false,
		);
		expect(exists).toBe(false);
	});

	it("references CSS file with hash in HTML after build", async () => {
		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);
		const input = [{ outputPath: htmlFilePath }];

		await plugin.runBuild(input);

		const html = await fs.readFile(htmlFilePath, "utf8");
		const match = html.match(
			/<link[^>]+href=["']([^"']*assets\/index-[a-zA-Z0-9]+\.css)["'][^>]*>/,
		);
		expect(match).toBeTruthy();

		const cssPath = match[1];
		const cssFile = path.join(outputPath, cssPath);
		const stat = await fs.stat(cssFile);
		expect(stat.isFile()).toBe(true);
	});

	it("getEleventyRolldownOptionsInput returns correct input object", () => {
		const entries = [
			{ outputPath: `${outputPath}index.html` },
			{ outputPath: `${outputPath}posts/index.html` },
			{ outputPath: `${outputPath}posts/hello/index.html` },
			{ outputPath: `${outputPath}robots.txt` },
			{ outputPath: false },
		];

		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);

		const result = plugin.getEleventyRolldownOptionsInput(entries);

		expect(result).toEqual({
			index: path.resolve(`${tempFolderName}/index.html`),
			"posts/index": path.resolve(`${tempFolderName}/posts/index.html`),
			"posts/hello/index": path.resolve(`${tempFolderName}/posts/hello/index.html`),
		});
	});

	it("getUserRolldownOptionsInput handles array input", () => {
		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);
		const result = plugin.getUserRolldownOptionsInput(["script.js", "styles/main.css"]);

		expect(result).toEqual({
			script: "script.js",
			"styles/main": "styles/main.css",
		});
	});

	it("getUserRolldownOptionsInput handles object input", () => {
		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);
		const result = plugin.getUserRolldownOptionsInput({
			script: "script.js",
			"styles/main": "styles/main.css",
		});

		expect(result).toEqual({
			script: "script.js",
			"styles/main": "styles/main.css",
		});
	});

	it("maps rollupOptions to rolldownOptions and logs a deprecation warning", () => {
		const logCalls = [];
		const mockConfigWithLogger = {
			...mockEleventyConfig,
			logger: {
				logWithOptions: (opts) => logCalls.push(opts),
			},
		};

		const rollupInput = { main: "src/main.js" };
		const options = {
			tempFolderName,
			viteOptions: {
				build: {
					rollupOptions: { input: rollupInput },
				},
			},
		};

		const plugin = new EleventyVite(mockConfigWithLogger, options);

		expect(plugin.options.viteOptions.build.rolldownOptions.input).toEqual(rollupInput);
		expect(plugin.options.viteOptions.build.rollupOptions).toBeUndefined();

		const warning = logCalls.find((c) => c.message.includes("rollupOptions"));
		expect(warning).toBeTruthy();
		expect(warning.type).toBe("info");

		// original pluginOptions object must not be mutated
		expect(options.viteOptions.build.rollupOptions).toEqual({ input: rollupInput });
		expect(options.viteOptions.build.rolldownOptions).toBeUndefined();
	});

	it("getUserRolldownOptionsInput handles string input", () => {
		const plugin = new EleventyVite(mockEleventyConfig, pluginOptions);
		const result = plugin.getUserRolldownOptionsInput("styles/main.css");

		expect(result).toEqual({
			"styles/main": "styles/main.css",
		});
	});
});