fix: make unrun optionnal (#570)

Co-authored-by: Kevin Deng <sxzz@sxzz.moe>

Author: Gugustinette

docs/options/config-file.md

@@ -69,7 +69,7 @@ This is useful if you want to rely solely on command-line options or default set
 - `auto` (default): Utilizes native runtime loading for TypeScript if supported; otherwise, defaults to `unconfig`.
 - `native`: Loads TypeScript configuration files using native runtime support. Requires a compatible environment, such as the latest Node.js, Deno, or Bun.
 - `unconfig`: Loads configuration files with the `unconfig` library, ensuring broad compatibility across different runtimes.
-- `unrun` _(experimental)_: Loads configuration files using the [`unrun`](https://gugustinette.github.io/unrun/) library, which provides similar compatibility as `unconfig` but with more performances.
+- `unrun` _(experimental)_: Loads configuration files using the [`unrun`](https://gugustinette.github.io/unrun/) library, which provides similar compatibility as `unconfig` but with more performances. Install the `unrun` package to use this loader.
 
 > [!TIP]
 > Node.js does not natively support importing TypeScript files without specifying the file extension. If you are using Node.js and want to load a TypeScript config file without including the `.ts` extension, consider using the `unconfig` or `unrun` loader for seamless compatibility.

docs/zh-CN/options/config-file.md

@@ -69,7 +69,7 @@ tsdown --no-config
 - `auto`（默认）：如果运行时支持，则使用原生方式加载 TypeScript，否则回退到 `unconfig`。
 - `native`：通过原生运行时支持加载 TypeScript 配置文件。需要兼容的环境，如最新版 Node.js、Deno 或 Bun。
 - `unconfig`：使用 `unconfig` 库加载配置文件，确保在不同运行时下具有广泛兼容性。
-- `unrun` _(experimental)_: Loads configuration files using the [`unrun`](https://gugustinette.github.io/unrun/) library, which provides similar compatibility as `unconfig` but with more performances.
+- `unrun` _(实验性)_: 使用 [`unrun`](https://gugustinette.github.io/unrun/) 库加载配置文件，兼容性与 `unconfig` 类似，但性能更高。要使用此加载器，请先安装 `unrun` 包。
 
 > [!TIP]
 > Node.js 原生不支持在不指定文件扩展名的情况下导入 TypeScript 文件。如果您在 Node.js 环境下希望加载不带 `.ts` 扩展名的 TypeScript 配置文件，建议使用 `unconfig` 或 `unrun` 加载器以获得更好的兼容性。

package.json

@@ -65,7 +65,8 @@
     "publint": "^0.3.0",
     "typescript": "^5.0.0",
     "unplugin-lightningcss": "^0.4.0",
-    "unplugin-unused": "^0.5.0"
+    "unplugin-unused": "^0.5.0",
+    "unrun": "^0.2.1"
   },
   "peerDependenciesMeta": {
     "@arethetypeswrong/core": {
@@ -82,6 +83,9 @@
     },
     "unplugin-unused": {
       "optional": true
+    },
+    "unrun": {
+      "optional": true
     }
   },
   "dependencies": {
@@ -98,8 +102,7 @@
     "tinyexec": "catalog:prod",
     "tinyglobby": "catalog:prod",
     "tree-kill": "catalog:prod",
-    "unconfig": "catalog:prod",
-    "unrun": "catalog:prod"
+    "unconfig": "catalog:prod"
   },
   "devDependencies": {
     "@arethetypeswrong/core": "catalog:dev",
@@ -122,6 +125,7 @@
     "unocss": "catalog:docs",
     "unplugin-lightningcss": "catalog:dev",
     "unplugin-unused": "catalog:dev",
+    "unrun": "catalog:dev",
     "vite": "catalog:docs",
     "vitest": "catalog:dev"
   },

pnpm-lock.yaml

@@ -25,6 +25,7 @@ catalogs:
     typescript: ~5.9.3
     unplugin-lightningcss: ^0.4.3
     unplugin-unused: ^0.5.4
+    unrun: ^0.2.1
     vitest: ^4.0.3
 
   docs:
@@ -61,7 +62,6 @@ catalogs:
     tinyglobby: ^0.2.15
     tree-kill: ^1.2.2
     unconfig: ^7.3.3
-    unrun: ^0.2.0
 
 ignoredBuiltDependencies:
   - rolldown

pnpm-workspace.yaml

@@ -3,7 +3,6 @@ import process from 'node:process'
 import { pathToFileURL } from 'node:url'
 import { underline } from 'ansis'
 import { loadConfig } from 'unconfig'
-import { unrun } from 'unrun'
 import { fsStat } from '../utils/fs'
 import { toArray } from '../utils/general'
 import { globalLogger } from '../utils/logger'
@@ -154,6 +153,7 @@ async function nativeImport(id: string) {
 }
 
 async function unrunImport(id: string) {
+  const { unrun } = await import('unrun')
   const { module } = await unrun({
     path: pathToFileURL(id).href,
   }).catch((error) => {