mirror of
https://github.com/Sea-Haven-Industries/open-swe.git
synced 2026-10-03 21:23:20 +00:00
48 lines
2 KiB
JavaScript
48 lines
2 KiB
JavaScript
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// Repackage the static Vite/TanStack-Start build (.output/public) into the Vercel
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// Build Output API layout (.vercel/output), generating the /dashboard/api/* proxy
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// destination from a per-project env var.
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//
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// Why this exists: prod deploys via a fast-forward-only promotion, so the `dev` and
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// `main` branches are byte-identical and a committed vercel.json CANNOT differ between
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// them. The app is same-origin only (no backend CORS), so the per-environment backend
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// must be the PROXY DESTINATION, supplied per Vercel project as LANGGRAPH_BACKEND_URL.
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// Vercel reads vercel.json BEFORE the build and never interpolates env into it, so the
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// routes are emitted here (read AFTER the build) where process.env is available.
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import { cp, mkdir, writeFile, rm } from "node:fs/promises"
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const backend = process.env.LANGGRAPH_BACKEND_URL
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if (!backend) {
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throw new Error(
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"LANGGRAPH_BACKEND_URL is required at build time (set it per Vercel project: " +
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"dev project -> dev langgraph URL, prod project -> prod langgraph URL).",
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)
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}
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const base = backend.replace(/\/$/, "")
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await rm(".vercel/output", { recursive: true, force: true })
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await mkdir(".vercel/output/static", { recursive: true })
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await cp(".output/public", ".vercel/output/static", { recursive: true })
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await writeFile(
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".vercel/output/config.json",
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JSON.stringify(
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{
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version: 3,
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routes: [
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// Same-origin proxy to this project's backend (proxy, not redirect, so the
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// osw_session cookie stays first-party on the Vercel origin).
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{ src: "^/dashboard/api/(.*)$", dest: `${base}/dashboard/api/$1` },
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// Serve hashed assets, the PWA manifest/service worker, and _shell.html itself
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// BEFORE the SPA catch-all, or static files get swallowed by the fallback.
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{ handle: "filesystem" },
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// SPA fallback (replaces the old vercel.json /(.*) -> /_shell.html rewrite).
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{ src: "^/.*$", dest: "/_shell.html" },
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],
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},
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null,
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2,
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) + "\n",
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)
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console.log(`[build-vercel-output] wrote .vercel/output/config.json (backend: ${base})`)
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