import { fileURLToPath } from 'node:url' import fsp from 'node:fs/promises' import { afterAll, beforeAll, describe, expect, it } from 'vitest' import { execaCommand } from 'execa' import { globby } from 'globby' import { join } from 'pathe' describe.skipIf(process.env.SKIP_BUNDLE_SIZE === 'true' || process.env.ECOSYSTEM_CI)('minimal nuxt application', () => { const rootDir = fileURLToPath(new URL('./fixtures/minimal', import.meta.url)) const publicDir = join(rootDir, '.output/public') const serverDir = join(rootDir, '.output/server') const stats = { client: { totalBytes: 0, files: [] as string[] }, server: { totalBytes: 0, files: [] as string[] } } beforeAll(async () => { await execaCommand(`pnpm nuxi build ${rootDir}`) }, 120 * 1000) afterAll(async () => { await fsp.writeFile(join(rootDir, '.output/test-stats.json'), JSON.stringify(stats, null, 2)) }) it('default client bundle size', async () => { stats.client = await analyzeSizes('**/*.js', publicDir) expect(roundToKilobytes(stats.client.totalBytes)).toMatchInlineSnapshot('"97.3k"') expect(stats.client.files.map(f => f.replace(/\..*\.js/, '.js'))).toMatchInlineSnapshot(` [ "_nuxt/entry.js", ] `) }) it('default server bundle size', async () => { stats.server = await analyzeSizes(['**/*.mjs', '!node_modules'], serverDir) expect(roundToKilobytes(stats.server.totalBytes)).toMatchInlineSnapshot('"62.0k"') const modules = await analyzeSizes('node_modules/**/*', serverDir) expect(roundToKilobytes(modules.totalBytes)).toMatchInlineSnapshot('"2295k"') const packages = modules.files .filter(m => m.endsWith('package.json')) .map(m => m.replace('/package.json', '').replace('node_modules/', '')) .sort() expect(packages).toMatchInlineSnapshot(` [ "@babel/parser", "@unhead/dom", "@unhead/shared", "@unhead/ssr", "@vue/compiler-core", "@vue/compiler-dom", "@vue/compiler-ssr", "@vue/reactivity", "@vue/runtime-core", "@vue/runtime-dom", "@vue/server-renderer", "@vue/shared", "cookie-es", "defu", "destr", "devalue", "estree-walker", "h3", "h3/node_modules/destr", "hookable", "iron-webcrypto", "klona", "node-fetch-native", "ofetch", "ofetch/node_modules/destr", "ohash", "pathe", "radix3", "scule", "source-map-js", "ufo", "uncrypto", "unctx", "unenv", "unhead", "unstorage", "unstorage/node_modules/destr", "vue", "vue-bundle-renderer", ] `) }) }) async function analyzeSizes (pattern: string | string[], rootDir: string) { const files: string[] = await globby(pattern, { cwd: rootDir }) let totalBytes = 0 for (const file of files) { const path = join(rootDir, file) const isSymlink = (await fsp.lstat(path).catch(() => null))?.isSymbolicLink() if (!isSymlink) { const bytes = Buffer.byteLength(await fsp.readFile(path)) totalBytes += bytes } } return { files, totalBytes } } function roundToKilobytes (bytes: number) { return (bytes / 1024).toFixed(bytes > (100 * 1024) ? 0 : 1) + 'k' }