ci: analyze bundle size (#13071)

This adds a new `analyze` step to our CI that analyzes the bundle size
for our `payload`, `@payloadcms/ui`, `@payloadcms/next` and
`@payloadcms/richtext-lexical` packages.

It does so using a new `build:bundle-for-analysis` script that packages
can add if the normal build step does not output an esbuild-bundled
version suitable for analyzing. For example, `ui` already runs esbuild,
but we run it again using `build:bundle-for-analysis` because we do not
want to split the bundle.

---
- To see the specific tasks where the Asana app for GitHub is being
used, see below:
  - https://app.asana.com/0/0/1210692087147570

Author: AlessioGr

.github/workflows/main.yml

@@ -721,3 +721,37 @@ jobs:
       - run: |
           echo github.ref: ${{ github.ref }}
           echo isV3: ${{ github.ref == 'refs/heads/main' }}
+  analyze:
+    runs-on: ubuntu-latest
+    needs: [changes, build]
+    timeout-minutes: 5
+    permissions:
+      contents: read # for checkout repository
+      actions: read # for fetching base branch bundle stats
+      pull-requests: write # for comments
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Node setup
+        uses: ./.github/actions/setup
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          pnpm-version: ${{ env.PNPM_VERSION }}
+          pnpm-run-install: false
+          pnpm-restore-cache: false # Full build is restored below
+          pnpm-install-cache-key: pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+
+      - name: Restore build
+        uses: actions/cache@v4
+        with:
+          path: ./*
+          key: ${{ github.sha }}-${{ github.run_number }}
+
+      - run: pnpm run build:bundle-for-analysis # Esbuild packages that haven't already been built in the build step for the purpose of analyzing bundle size
+        env:
+          DO_NOT_TRACK: 1 # Disable Turbopack telemetry
+
+      - name: Analyze esbuild bundle size
+        uses: exoego/esbuild-bundle-analyzer@v1
+        with:
+          metafiles: 'packages/payload/meta_index.json,packages/payload/meta_shared.json,packages/ui/meta_client.json,packages/ui/meta_shared.json,packages/next/meta_index.json,packages/richtext-lexical/meta_client.json'

.gitignore

@@ -22,6 +22,11 @@ meta_server.json
 meta_index.json
 meta_shared.json
 
+packages/payload/esbuild
+packages/ui/esbuild
+packages/next/esbuild
+packages/richtext-lexical/esbuild
+
 .turbo
 
 # Ignore test directory media folder/files

package.json

@@ -14,6 +14,7 @@
     "build:all": "turbo build --filter \"!blank\" --filter \"!website\"",
     "build:app": "next build",
     "build:app:analyze": "cross-env ANALYZE=true next build",
+    "build:bundle-for-analysis": "turbo run build:bundle-for-analysis",
     "build:clean": "pnpm clean:build",
     "build:core": "turbo build --filter \"!@payloadcms/plugin-*\" --filter \"!@payloadcms/storage-*\" --filter \"!blank\" --filter \"!website\"",
     "build:core:force": "pnpm clean:build && pnpm build:core --no-cache --force",

packages/next/bundle.js

@@ -0,0 +1,32 @@
+import * as esbuild from 'esbuild'
+import fs from 'fs'
+import { sassPlugin } from 'esbuild-sass-plugin'
+import path from 'path'
+import { fileURLToPath } from 'url'
+const filename = fileURLToPath(import.meta.url)
+const dirname = path.dirname(filename)
+
+const directoryArg = process.argv[2] || 'dist'
+
+async function build() {
+  const resultIndex = await esbuild.build({
+    entryPoints: ['dist/esbuildEntry.js'],
+    bundle: true,
+    platform: 'node',
+    format: 'esm',
+    outfile: `${directoryArg}/index.js`,
+    splitting: false,
+    external: ['@payloadcms/ui', 'payload', '@payloadcms/translations', '@payloadcms/graphql'],
+    minify: true,
+    metafile: true,
+    tsconfig: path.resolve(dirname, './tsconfig.json'),
+    // plugins: [commonjs()],
+    sourcemap: true,
+    plugins: [sassPlugin({ css: 'external' })],
+  })
+  console.log('payload server bundled successfully')
+
+  fs.writeFileSync('meta_index.json', JSON.stringify(resultIndex.metafile))
+}
+
+await build()

packages/next/eslint.config.js

@@ -12,6 +12,18 @@ export const index = [
       },
     },
   },
+  {
+    languageOptions: {
+      parserOptions: {
+        ...rootParserOptions,
+        tsconfigRootDir: import.meta.dirname,
+        projectService: {
+          // See comment in packages/eslint-config/index.mjs
+          allowDefaultProject: ['bundleScss.js', 'bundle.js', 'babel.config.cjs'],
+        },
+      },
+    },
+  },
 ]
 
 export default index

packages/next/package.json

@@ -74,6 +74,7 @@
   "scripts": {
     "build": "pnpm build:reactcompiler",
     "build:babel": "rm -rf dist_optimized && babel dist --out-dir dist_optimized --source-maps --extensions .ts,.js,.tsx,.jsx,.cjs,.mjs && rm -rf dist && mv dist_optimized dist",
+    "build:bundle-for-analysis": "rm -rf dist && rm -rf tsconfig.tsbuildinfo && pnpm build:swc && pnpm build:babel && pnpm copyfiles && node ./bundle.js esbuild",
     "build:cjs": "swc ./src/withPayload.js -o ./dist/cjs/withPayload.cjs --config-file .swcrc-cjs --strip-leading-paths",
     "build:esbuild": "node bundleScss.js",
     "build:reactcompiler": "rm -rf dist && rm -rf tsconfig.tsbuildinfo && pnpm build:swc && pnpm build:babel && pnpm copyfiles && pnpm build:types && pnpm build:esbuild  && pnpm build:cjs",

packages/payload/bundle.js

@@ -5,13 +5,16 @@ import { fileURLToPath } from 'url'
 const filename = fileURLToPath(import.meta.url)
 const dirname = path.dirname(filename)
 
+const directoryArg = process.argv[2] || 'dist'
+
+
 async function build() {
   const resultIndex = await esbuild.build({
-    entryPoints: ['src/index.ts'],
+    entryPoints: ['dist/index.js'],
     bundle: true,
     platform: 'node',
     format: 'esm',
-    outfile: 'dist/index.js',
+    outfile: `${directoryArg}/index.js`,
     splitting: false,
     external: [
       'lodash',
@@ -33,11 +36,11 @@ async function build() {
   console.log('payload server bundled successfully')
 
   const resultShared = await esbuild.build({
-    entryPoints: ['src/exports/shared.ts'],
+    entryPoints: ['dist/exports/shared.js'],
     bundle: true,
     platform: 'node',
     format: 'esm',
-    outfile: 'dist/exports/shared.js',
+    outfile: `${directoryArg}/exports/shared.js`,
     splitting: false,
     external: [
       'lodash',

packages/payload/package.json

@@ -71,8 +71,8 @@
     "bin.js"
   ],
   "scripts": {
-    "build": "rimraf .dist && rimraf tsconfig.tsbuildinfo && pnpm copyfiles && pnpm build:types && pnpm build:swc && pnpm build:esbuild",
-    "build:esbuild": "echo skipping esbuild",
+    "build": "rimraf .dist && rimraf tsconfig.tsbuildinfo && pnpm copyfiles && pnpm build:types && pnpm build:swc && echo skipping esbuild",
+    "build:bundle-for-analysis": "node ./bundle.js esbuild",
     "build:swc": "swc ./src -d ./dist --config-file .swcrc --strip-leading-paths",
     "build:types": "tsc --emitDeclarationOnly --outDir dist",
     "clean": "rimraf -g {dist,*.tsbuildinfo}",

packages/richtext-lexical/bundle.js

@@ -6,6 +6,10 @@ const filename = fileURLToPath(import.meta.url)
 const dirname = path.dirname(filename)
 import { sassPlugin } from 'esbuild-sass-plugin'
 
+const directoryArg = process.argv[2] || 'dist'
+
+const shouldSplit = process.argv.includes('--no-split') ? false : true
+
 const removeCSSImports = {
   name: 'remove-css-imports',
   setup(build) {
@@ -19,42 +23,45 @@ const removeCSSImports = {
 }
 
 async function build() {
+  //create empty directoryArg/exports/client_optimized dir
+  await fs.promises.mkdir(`${directoryArg}/exports/client_optimized`, { recursive: true })
+
   // Bundle only the .scss files into a single css file
   await esbuild.build({
     entryPoints: ['src/exports/cssEntry.ts'],
     bundle: true,
     minify: true,
-    outdir: 'dist/bundled_scss',
+    outdir: `${directoryArg}/bundled_scss`,
     loader: { '.svg': 'dataurl' },
     packages: 'external',
     //external: ['*.svg'],
     plugins: [sassPlugin({ css: 'external' })],
   })
 
-  //create empty dist/exports/client_optimized dir
-  fs.mkdirSync('dist/exports/client_optimized')
-
   try {
-    fs.renameSync('dist/bundled_scss/cssEntry.css', 'dist/field/bundled.css')
-    fs.copyFileSync('dist/field/bundled.css', 'dist/exports/client_optimized/bundled.css')
-    fs.rmSync('dist/bundled_scss', { recursive: true })
+    await fs.promises.rename(`${directoryArg}/bundled_scss/cssEntry.css`, `dist/field/bundled.css`)
+    fs.copyFileSync(
+      `dist/field/bundled.css`,
+      `${directoryArg}/exports/client_optimized/bundled.css`,
+    )
+    fs.rmSync(`${directoryArg}/bundled_scss`, { recursive: true })
   } catch (err) {
     console.error(`Error while renaming index.css: ${err}`)
     throw err
   }
 
-  console.log('dist/field/bundled.css bundled successfully')
+  console.log(`${directoryArg}/field/bundled.css bundled successfully`)
 
   // Bundle `client.ts`
   const resultClient = await esbuild.build({
     entryPoints: ['dist/exports/client/index.js'],
     bundle: true,
     platform: 'browser',
     format: 'esm',
-    outdir: 'dist/exports/client_optimized',
+    outdir: `${directoryArg}/exports/client_optimized`,
     //outfile: 'index.js',
     // IMPORTANT: splitting the client bundle means that the `use client` directive will be lost for every chunk
-    splitting: true,
+    splitting: shouldSplit,
     external: [
       '*.scss',
       '*.css',

packages/richtext-lexical/package.json

@@ -337,12 +337,14 @@
   "scripts": {
     "build": "pnpm build:reactcompiler",
     "build:babel": "rm -rf dist_optimized && babel dist --out-dir dist_optimized --source-maps --extensions .ts,.js,.tsx,.jsx,.cjs,.mjs && rm -rf dist && mv dist_optimized dist",
+    "build:bundle-for-analysis": "rm -rf dist esbuild && rm -rf tsconfig.tsbuildinfo && pnpm build:swc && pnpm build:babel && pnpm copyfiles && pnpm build:esbuild esbuild --no-split",
     "build:clean": "find . \\( -type d \\( -name build -o -name dist -o -name .cache \\) -o -type f -name tsconfig.tsbuildinfo \\) -exec rm -rf {} + && pnpm build",
-    "build:esbuild": "node bundle.js && rm -rf dist/exports/client && mv dist/exports/client_optimized dist/exports/client",
-    "build:reactcompiler": "rm -rf dist && rm -rf tsconfig.tsbuildinfo && pnpm build:swc && pnpm build:babel && pnpm copyfiles && pnpm build:esbuild && pnpm build:types",
+    "build:esbuild": "node bundle.js",
+    "build:esbuild:postprocess": "rm -rf dist/exports/client && mv dist/exports/client_optimized dist/exports/client",
+    "build:reactcompiler": "rm -rf dist && rm -rf tsconfig.tsbuildinfo && pnpm build:swc && pnpm build:babel && pnpm copyfiles && pnpm build:esbuild && pnpm build:esbuild:postprocess && pnpm build:types",
     "build:swc": "swc ./src -d ./dist --config-file .swcrc --strip-leading-paths",
     "build:types": "tsc --emitDeclarationOnly --outDir dist",
-    "build:without_reactcompiler": "rm -rf dist && rm -rf tsconfig.tsbuildinfo && pnpm copyfiles && pnpm build:types && pnpm build:swc && pnpm build:esbuild && rm -rf dist/exports/client && mv dist/exports/client_unoptimized dist/exports/client",
+    "build:without_reactcompiler": "rm -rf dist && rm -rf tsconfig.tsbuildinfo && pnpm copyfiles && pnpm build:types && pnpm build:swc && pnpm build:esbuild && pnpm build:esbuild:postproces && rm -rf dist/exports/client && mv dist/exports/client_unoptimized dist/exports/client",
     "clean": "rimraf -g {dist,*.tsbuildinfo}",
     "copyfiles": "copyfiles -u 1 \"src/**/*.{html,css,ttf,woff,woff2,eot,svg,jpg,png,json}\" dist/",
     "lint": "eslint .",