create monorepo

package.json

@@ -1,22 +1,8 @@
 {
   "name": "vite-size",
-  "version": "0.0.0",
-  "description": "Measure your build bundle size with Vite",
-  "main": "dist/index.js",
-  "bin": "dist/bin.js",
-  "type": "module",
-  "scripts": {
-    "dev": "pnpm run build && node dist/index.js",
-    "build": "npx tsc",
-    "watch": "npx tsc --watch"
-  },
-  "author": "glitch-txs",
   "license": "MIT",
-  "dependencies": {
-    "vite": "^5.2.9"
-  },
-  "devDependencies": {
-    "@types/node": "^20.12.7",
-    "typescript": "^5.4.5"
+  "scripts": {
+    "build": "pnpm run --filter ./package build",
+    "size": "pnpm run --filter ./playground size"
   }
 }

package/bin.ts

@@ -0,0 +1,7 @@
+#!/usr/bin/env node
+
+import { run } from "./index.js"
+
+const res = await run(process)
+
+console.log(res)

index.ts → package/index.ts

@@ -1,6 +1,8 @@
-import { build, type InlineConfig } from 'vite'
+import { build } from 'vite'
 import { promisify } from 'node:util'
 import zlib from 'node:zlib'
+import { resolve } from 'node:path'
+import { readFile } from 'node:fs/promises'
 
 const gzip = promisify(zlib.gzip)
 
@@ -10,27 +12,33 @@ interface FileInfo {
   gzip: string | number
 }
 
-export async function buildVite(inlineConfig?:InlineConfig){
+export async function run(process: NodeJS.Process){
+
+  const pkgJSONPath = resolve(process.cwd(), 'package.json')
+  const pkgJSON = JSON.parse(await readFile(pkgJSONPath, 'utf8'))
 
+  const external = process.argv.slice(process.argv.indexOf('--externals') + 1)
+
   const filesInfo: FileInfo[] = []
 
   type Return = Awaited<ReturnType<typeof build>>
 
   const res: Omit<Return, 'RollupWatcher'> = await build({
-    root: './dist',
     build: {
       minify: true,
-      outDir: './distVite',
+      outDir: './dist/_vite-size',
       lib: {
-        entry: 'test.js',
+        entry: pkgJSON.main,
         formats: ['es']
-      }
+      },
+      rollupOptions: {
+        external
+      },
     },
-    ...inlineConfig
   })
 
 
-  const { output } = (Array.isArray(res) ? res[0] : res)
+  const { output } = Array.isArray(res) ? res[0] : res
 
   for (const chunkOrAsset of output) {
     if (chunkOrAsset.type === 'chunk') {
@@ -48,8 +56,4 @@ export async function buildVite(inlineConfig?:InlineConfig){
   }
 
   return filesInfo
-}
-
-const filesInfo = await buildVite()
-
-console.log(filesInfo)
+}

package/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "vite-size",
+  "version": "0.0.0",
+  "description": "Measure your build bundle size with Vite",
+  "main": "dist/index.js",
+  "bin": "dist/bin.js",
+  "type": "module",
+  "scripts": {
+    "dev": "pnpm run build && node dist/index.js",
+    "build": "npx tsc",
+    "watch": "npx tsc --watch"
+  },
+  "author": "glitch-txs",
+  "license": "MIT",
+  "dependencies": {
+    "vite": "5.2.9"
+  },
+  "devDependencies": {
+    "@types/node": "^20.12.7",
+    "typescript": "^5.4.5"
+  }
+}