Files
copilotkit__copilotkit/showcase/shell-docs/next.config.ts
Jordan Ritter 28f33ecc8a fix(showcase): stop SSR 500 + hook-order regressions in shell runtime-config; tolerate env-name variants
Six fixes addressing CR findings on the Option-B runtime URL-injection migration:

1. SSR_PLACEHOLDER must be parseable URL sentinels — `new URL("")` throws on
   SSR causing 500s for any consumer that constructs URLs from runtime-config
   fields. Use `.invalid`-TLD sentinels (RFC 2606) for URL fields; analytics
   keys stay empty string. Add `suppressHydrationWarning` on consumers that
   render the placeholder server-side and the real value post-hydration
   (integration-grid, page-actions popover).

2. Hook-order: move `usePathname()`/`useEffect` ABOVE the early-return in
   use-google-analytics. Gate the effect bodies on `GA_ID` instead so React
   sees a stable hook order across renders.

3. `readUrl`/`readKey` accept either bare or `NEXT_PUBLIC_*`-prefixed env
   names via a fallback chain — covers both server-only and inlined-public
   variable conventions without forcing a rename across deploy targets.

4. Extract `serializeRuntimeConfig` to `lib/runtime-config-serialize.ts` so
   the OWASP-escape behavior (XSS via </script>, U+2028/U+2029 line-terminator
   injection) can be unit-tested without importing the layout into vitest.

5. Reclassify `intelligenceSignupUrl`/`posthogHost` from FATAL-CONFIG to
   info-level in shell-docs — these are optional integrations, not hard
   wiring failures, so absence should not poison the error stream.

6. Comment-rot cleanup: drop "Option B", B12, "the bug we are fixing", fix
   "four substrings"→"three substrings" miscounts, and refresh shell-docs
   .env.example to describe the runtime-injection contract instead of a
   stale next.config throw claim.

V1: shell + shell-docs `next build` succeeds (no Edge-runtime crash on
`unstable_noStore`).
V2: `OPS_BASE_URL=` shell-dashboard `next build` no longer throws —
`next.config.ts` is now a phase-aware function that emits a sentinel
destination at build time and throws only at start (PHASE_PRODUCTION_BUILD
from next/constants).

Tests: shell-docs 72/72, shell 12/12, shell-dashboard runtime-config 16/16
(pre-existing baseline-partner-count failure unchanged).
2026-05-29 11:45:15 -07:00

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import type { NextConfig } from "next";
// NEXT_PUBLIC_BASE_URL and NEXT_PUBLIC_SHELL_URL are read at REQUEST
// time by the server `getRuntimeConfig()` reader and injected into the
// client via `window.__SHOWCASE_CONFIG__` from the root layout. They
// are NOT build-time inputs — a single built artifact can serve staging
// and prod by changing the Railway env vars. Any previous build-time
// validation that threw on unset env vars would prevent that exact
// deploy pattern. Missing values are surfaced loudly at runtime via
// `console.error` from `runtime-config.ts` instead.
const nextConfig: NextConfig = {
images: {
// Bypass the Next.js image optimizer (`/_next/image`). The optimizer
// requires `sharp` at runtime, which is missing from the Railway image
// and breaks all `<Image>` rendering site-wide. Our CDN
// (`cdn.copilotkit.ai`, CloudFront/S3) ignores `?fm=webp` and serves
// PNG regardless, so the optimizer added no format-conversion value
// for CDN-hosted images. With `unoptimized`, `<Image>` renders as a
// plain `<img>` pointing at the source URL — visually identical for
// users, no sharp dependency required.
unoptimized: true,
// Asset CDN for framework intro-page media (banner videos, architecture
// diagrams, supported-feature thumbnails, framework icons). Hosts every
// image/video referenced by `src/data/frameworks/*.ts` and any future
// marketing surface that pulls from the shared CDN. Kept here for
// documentation and to remain valid if the optimizer is re-enabled.
remotePatterns: [
{
protocol: "https",
hostname: "cdn.copilotkit.ai",
},
],
},
async rewrites() {
return {
beforeFiles: [
// PostHog reverse proxy — routes analytics through this host so
// requests bypass ad blockers / tracking-protection that target
// the *.i.posthog.com hostname directly. Mirrors docs/.
{
source: "/ingest/static/:path*",
destination: "https://eu-assets.i.posthog.com/static/:path*",
},
{
source: "/ingest/:path*",
destination: "https://eu.i.posthog.com/:path*",
},
// Fumadocs LLM page-actions feature: every docs page is also
// reachable as `<path>.mdx` so LLMCopyButton/ViewOptionsPopover
// (and external crawlers) can fetch the raw MDX source. The
// route handler at `app/llms-mdx/[[...slug]]/route.ts` reuses
// `loadDoc()` to resolve the same content tree the page uses.
{
source: "/:path*.mdx",
destination: "/llms-mdx/:path*",
},
{
source: "/:path*.md",
destination: "/llms-mdx/:path*",
},
],
afterFiles: [],
fallback: [],
};
},
async redirects() {
return [
{
// Built-in agent is the default framework, so its overview page
// is the docs root. Avoid surfacing a redundant "Introduction"
// entry inside the built-in-agent sidebar by canonicalizing the
// bare /built-in-agent URL to the root overview.
source: "/built-in-agent",
destination: "/",
permanent: true,
},
{
source: "/frontend-actions",
destination: "/frontend-tools",
permanent: true,
},
{
source: "/troubleshooting/migrate-to-v2",
destination: "/migrate/v2",
permanent: true,
},
{
source: "/troubleshooting/migrate-to-1.10.X",
destination: "/migrate/1.10.X",
permanent: true,
},
{
source: "/troubleshooting/migrate-to-1.8.2",
destination: "/migrate/1.8.2",
permanent: true,
},
{
source: "/concepts/oss-vs-cloud",
destination: "/concepts/oss-vs-enterprise",
permanent: true,
},
// Quickstart needs a real backing page when hit without a stored
// framework. `SidebarLink` rewrites `/quickstart` → `/<framework>/quickstart`
// when a framework is selected; users who land here cold (or who
// explicitly picked the bare CopilotKit / Built-in Agent view)
// get the Built-in Agent quickstart by default. 308 keeps the
// sidebar's `/quickstart` href intact while always sending the
// user to a real guide.
{
source: "/quickstart",
destination: "/built-in-agent/quickstart",
permanent: true,
},
// /unselected/* tree retired. Files moved to integrations/built-in-agent/
// (BIA replaced the old "unselected" slot as the default integration).
// Per-path entries below cover BIA-canonical mappings (direct moves +
// slug renames from SUBPATH_RENAMES in seo-redirects.ts); the catch-all
// at the bottom routes everything else into /built-in-agent/ to preserve
// SEO equity, since these legacy URLs historically served BIA content.
{
source: "/unselected",
destination: "/built-in-agent",
permanent: true,
},
{
source: "/unselected/quickstart",
destination: "/built-in-agent/quickstart",
permanent: true,
},
{
source: "/unselected/advanced-configuration",
destination: "/built-in-agent/advanced-configuration",
permanent: true,
},
{
source: "/unselected/mcp-servers",
destination: "/built-in-agent/mcp-servers",
permanent: true,
},
{
source: "/unselected/model-selection",
destination: "/built-in-agent/model-selection",
permanent: true,
},
{
source: "/unselected/server-tools",
destination: "/built-in-agent/server-tools",
permanent: true,
},
{
source: "/unselected/shared-state",
destination: "/built-in-agent/shared-state",
permanent: true,
},
{
source: "/unselected/generative-ui/mcp-apps",
destination: "/built-in-agent/generative-ui/mcp-apps",
permanent: true,
},
// Cat C promotions whose canonical home moved off the unselected
// tail (e.g. `unselected/ag-ui` → `backend/ag-ui`).
{
source: "/unselected/ag-ui",
destination: "/backend/ag-ui",
permanent: true,
},
{
source: "/unselected/copilot-runtime",
destination: "/backend/copilot-runtime",
permanent: true,
},
// custom-agent: consolidate two divergent shell-docs copies onto the
// structurally-complete backend/custom-agent.mdx (508 lines, matches
// upstream snippet). The integrations/built-in-agent/custom-agent.mdx
// copy (240 lines, missing 5 sections) was retired; redirect both
// historical paths.
{
source: "/built-in-agent/custom-agent",
destination: "/backend/custom-agent",
permanent: true,
},
{
source: "/integrations/built-in-agent/custom-agent",
destination: "/backend/custom-agent",
permanent: true,
},
// troubleshooting/migrate-to-* in unselected → existing
// /migrate/* canonical (already redirected at the
// /troubleshooting/migrate-to-* level).
{
source: "/unselected/troubleshooting/migrate-to-v2",
destination: "/migrate/v2",
permanent: true,
},
{
source: "/unselected/troubleshooting/migrate-to-1.10.X",
destination: "/migrate/1.10.X",
permanent: true,
},
{
source: "/unselected/troubleshooting/migrate-to-1.8.2",
destination: "/migrate/1.8.2",
permanent: true,
},
// Tutorials and interrupt-based moved out of unselected/ to root.
{
source: "/unselected/tutorials/:path*",
destination: "/tutorials/:path*",
permanent: true,
},
// Interrupt-based was a LangGraph-specific page parked in
// unselected/. Real homes are
// `/<langgraph-slug>/human-in-the-loop/interrupt-flow` (and the
// Mastra equivalent). Send anyone landing on the legacy URL to
// the framework-agnostic HITL page; soft-default routes them
// through to the right framework's interrupt flow if they're
// stored as LangGraph or Mastra.
{
source: "/unselected/generative-ui/your-components/interrupt-based",
destination: "/human-in-the-loop",
permanent: true,
},
// agent-app-context was concept-per-framework only; no canonical
// root home. Send legacy URLs to `/` rather than 404 — readers
// who stored the old link will land on docs and can navigate.
{
source: "/unselected/agent-app-context",
destination: "/",
permanent: true,
},
// Slug-rename entries (mirror SUBPATH_RENAMES in seo-redirects.ts).
// These MUST come before the catch-all so the rename wins. Each
// historical slug under /unselected/ has been renamed under
// /built-in-agent/; e.g. agentic-chat-ui → prebuilt-components.
{
source: "/unselected/agentic-chat-ui",
destination: "/built-in-agent/prebuilt-components",
permanent: true,
},
{
source: "/unselected/use-agent-hook",
destination: "/built-in-agent/programmatic-control",
permanent: true,
},
{
source: "/unselected/frontend-actions",
destination: "/built-in-agent/frontend-tools",
permanent: true,
},
{
source: "/unselected/vibe-coding-mcp",
destination: "/built-in-agent/coding-agents",
permanent: true,
},
{
source: "/unselected/generative-ui/agentic",
destination:
"/built-in-agent/generative-ui/your-components/display-only",
permanent: true,
},
{
source: "/unselected/generative-ui/backend-tools",
destination: "/built-in-agent/generative-ui/tool-rendering",
permanent: true,
},
{
source: "/unselected/generative-ui/frontend-tools",
destination: "/built-in-agent/frontend-tools",
permanent: true,
},
{
source: "/unselected/generative-ui/render-only",
destination:
"/built-in-agent/generative-ui/your-components/display-only",
permanent: true,
},
{
source: "/unselected/generative-ui/tool-based",
destination: "/built-in-agent/generative-ui/tool-rendering",
permanent: true,
},
{
source: "/unselected/custom-look-and-feel/bring-your-own-components",
destination: "/built-in-agent/custom-look-and-feel/slots",
permanent: true,
},
{
source:
"/unselected/custom-look-and-feel/customize-built-in-ui-components",
destination: "/built-in-agent/custom-look-and-feel/slots",
permanent: true,
},
{
source: "/unselected/custom-look-and-feel/markdown-rendering",
destination: "/built-in-agent/custom-look-and-feel/slots",
permanent: true,
},
{
source: "/unselected/guide",
destination: "/built-in-agent/guides",
permanent: true,
},
{
source: "/unselected/mcp",
destination: "/built-in-agent/coding-agents",
permanent: true,
},
// Catch-all: route remaining /unselected/* paths into /built-in-agent/.
// BIA is the canonical owner of the legacy unselected/ content tree;
// matches P1×unselected in seo-redirects.ts.
{
source: "/unselected/:path*",
destination: "/built-in-agent/:path*",
permanent: true,
},
// /learn/* tree retired. The seven explanation-tier pages were
// promoted into the Concepts subgroup, the multi-conversation
// tutorial moved to /tutorials/, the open-json-ui page moved to
// /generative-ui/, and the What's New tree became its own
// top-level section. Redirects below funnel old URLs to the
// canonical homes.
{
source: "/learn",
destination: "/concepts/architecture",
permanent: true,
},
{
source: "/learn/architecture",
destination: "/concepts/architecture",
permanent: true,
},
{
source: "/learn/threads",
destination: "/premium/threads-explained",
permanent: true,
},
{
source: "/learn/intelligence-platform",
destination: "/premium/intelligence-platform",
permanent: true,
},
{
source: "/learn/agentic-protocols",
destination: "/agentic-protocols",
permanent: true,
},
{
source: "/learn/ag-ui-protocol",
destination: "/agentic-protocols/ag-ui",
permanent: true,
},
{
source: "/learn/a2a-protocol",
destination: "/agentic-protocols/a2a",
permanent: true,
},
{
source: "/learn/connect-mcp-servers",
destination: "/agentic-protocols/mcp",
permanent: true,
},
{
source: "/learn/generative-ui",
destination: "/concepts/generative-ui-overview",
permanent: true,
},
{
source: "/learn/generative-ui/specs/open-json-ui",
destination: "/generative-ui/open-json-ui",
permanent: true,
},
{
source: "/learn/generative-ui/specs/a2ui",
destination: "/generative-ui/a2ui",
permanent: true,
},
{
source: "/learn/generative-ui/specs/mcp-apps",
destination: "/generative-ui/mcp-apps",
permanent: true,
},
{
source: "/learn/generative-ui/specs",
destination: "/concepts/generative-ui-overview",
permanent: true,
},
{
source: "/learn/tutorials/multi-conversation-chat",
destination: "/",
permanent: true,
},
{
source: "/learn/whats-new/:path*",
destination: "/whats-new/:path*",
permanent: true,
},
{
source: "/learn/whats-new",
destination: "/whats-new",
permanent: true,
},
// Concepts subgroup tightened: protocol pages moved into a new
// /agentic-protocols/ section under Get Started, the
// Intelligence Platform + Threads explanation pages moved to
// Enterprise (/premium/), and three-types-of-gen-ui merged into
// /concepts/generative-ui-overview. Per-path redirects below
// catch URLs that were live in the brief window between the
// first /learn/ consolidation pass and this restructure.
{
source: "/concepts/agentic-protocols",
destination: "/agentic-protocols",
permanent: true,
},
{
source: "/concepts/ag-ui-protocol",
destination: "/agentic-protocols/ag-ui",
permanent: true,
},
{
source: "/concepts/mcp-servers",
destination: "/agentic-protocols/mcp",
permanent: true,
},
{
source: "/concepts/a2a-protocol",
destination: "/agentic-protocols/a2a",
permanent: true,
},
{
source: "/concepts/intelligence-platform",
destination: "/premium/intelligence-platform",
permanent: true,
},
{
source: "/concepts/threads",
destination: "/premium/threads-explained",
permanent: true,
},
{
source: "/concepts/three-types-of-gen-ui",
destination: "/concepts/generative-ui-overview",
permanent: true,
},
// Stale pages hidden pre-launch. 302 (not permanent) — these
// URLs may be restored once the underlying content is rewritten.
// Tutorials are broken end-to-end and pulled from nav; files
// remain on disk under content/docs/tutorials/ for post-launch
// rewrite.
{
source: "/tutorials/:path*",
destination: "/",
permanent: false,
},
// Old-name straggler from the coding-agents rename; the page
// moved to /coding-agents.
{
source: "/coding-agent-setup",
destination: "/coding-agents",
permanent: false,
},
// Old guide now belongs in the v2 hook reference.
{
source: "/copilot-suggestions",
destination: "/reference/v2/hooks/useSuggestions",
permanent: true,
},
// AI-slop placeholder pulled from nav until properly authored;
// file stays on disk for rewrite.
{
source: "/generative-ui/open-json-ui",
destination: "/generative-ui",
permanent: false,
},
// ag-ui-middleware moved into the agentic-protocols group so it
// appears in the sidebar under AG-UI rather than as an orphan
// root page. 302 (not 301) since the new home is recent and we
// want flexibility to revisit placement without burning the
// permanent-redirect cache.
{
source: "/ag-ui-middleware",
destination: "/agentic-protocols/ag-ui-middleware",
permanent: false,
},
// Root `/generative-ui/your-components/*` pages do not exist in
// the unscoped docs tree, so keep those bare redirects. Do not
// redirect `/:framework/generative-ui/your-components/*`: several
// framework-scoped docs, including Built-in Agent, are authored at
// those paths and should render directly.
{
source: "/generative-ui/your-components/display-only",
destination: "/generative-ui/tool-based",
permanent: false,
},
{
source: "/generative-ui/your-components/interactive",
destination: "/human-in-the-loop",
permanent: false,
},
];
},
};
export default nextConfig;