perf: compile default bot matcher at build time

[harlan-zw]

❓ Type of change

• 📖 Documentation
• 🐞 Bug fix
• 👌 Enhancement
• ✨ New feature
• 🧹 Chore
• ⚠️ Breaking change

📚 Description

nuxt-ai-ready called createPatternMap() during bot negotiation on every SSR. Generate a compact regex matcher from BOT_MAP during the package build, while custom maps keep request-local behavior.

SSR CPU fell between 17% and 26% across three controlled runs. The SSR module profile allocated 23.3 KiB less per request. robots.txt and llms.txt crossed baseline in both directions.

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@nuxtjs/robots@318

commit: 9c3b8c2

[github-actions]

📦 Package Size

⚠️ 2 size metrics grew

Package output	Gzipped	Δ
@nuxtjs/robots · export ./util	5.9 kB → 6.6 kB	🔴 +696 B (+11.8%)
@nuxtjs/robots · published payload	35 kB → 36 kB	🔴 +1.4 kB (+4.0%)

All tracked output (10)

Package output	Gzipped	Raw
@nuxtjs/robots · dependency @fingerprintjs/botd	13 kB	55 kB	✅
@nuxtjs/robots · dependency h3	34 kB	146 kB	✅
@nuxtjs/robots · dependency nuxt-site-config	9.8 kB	24 kB	✅
@nuxtjs/robots · dependency nuxtseo-shared	20 kB	65 kB	✅
@nuxtjs/robots · export .	5.3 kB	20 kB	✅
@nuxtjs/robots · export ./content	292 B	503 B	✅
@nuxtjs/robots · export ./util	6.6 kB	25 kB	🔴
@nuxtjs/robots · published payload	36 kB	121 kB	🔴
@nuxtjs/robots · app runtime	2.5 kB	6.2 kB	✅
@nuxtjs/robots · server runtime	8.6 kB	22 kB	✅

Runtime dependencies (10)

Package	Dependency	Requested	Resolved	Cost
@nuxtjs/robots	@fingerprintjs/botd	^2.0.0	2.0.0	📦 13 kB gzip
@nuxtjs/robots	@nuxt/kit	^4.5.2	4.5.2	♻️ free via Nuxt 4.5.2
@nuxtjs/robots	consola	^3.4.2	3.4.2	♻️ free via Nuxt 4.5.2
@nuxtjs/robots	defu	^6.1.7	6.1.7	♻️ free via Nuxt 4.5.2
@nuxtjs/robots	h3	^1.15.11	1.15.11	📦 34 kB gzip
@nuxtjs/robots	nuxt-site-config	^4.2.0	4.2.0	📦 9.8 kB gzip
@nuxtjs/robots	nuxtseo-shared	^5.3.11	5.3.11	📦 20 kB gzip
@nuxtjs/robots	pathe	^2.0.3	2.0.3	♻️ free via Nuxt 4.5.2
@nuxtjs/robots	pkg-types	^2.3.1	2.3.1	♻️ free via Nuxt 4.5.2
@nuxtjs/robots	ufo	^1.6.4	1.6.4	♻️ free via Nuxt 4.5.2

_{Baseline: main_@_1998e6d___2026-08-10 · gzip is the comparison metric · changes below 16 B gzip are ignored}