improvement(ci): omit unused source-map processing from E2E builds

Author: waleedlatif1

.github/workflows/checks.yml

@@ -950,6 +950,7 @@ jobs:
           # lint's type-check and the `build` job's own `next build` (generated route types too)
           # already enforce.
           NEXT_BUILD_SKIP_TYPE_CHECK: 'true'
+          NEXT_BUILD_DISABLE_SOURCE_MAPS: 'true'
         run: bunx turbo run build --filter=@sim/app
 
       # Everything `next start` reads, including the spreadsheet parse worker it spawns (named, so a

apps/sim/lib/core/config/env.ts

@@ -336,6 +336,7 @@ export const env = createEnv({
     // Infrastructure & Deployment
     NEXT_RUNTIME:                          z.string().optional(),                  // Next.js runtime environment
     DOCKER_BUILD:                          z.boolean().optional(),                 // Flag indicating Docker build environment
+    NEXT_BUILD_DISABLE_SOURCE_MAPS:        z.boolean().optional(),                 // Omits source-map processing from builds that do not serve maps
     NEXT_BUILD_SKIP_TYPE_CHECK:            z.boolean().optional(),                 // Skips `next build`'s TypeScript pass where another CI job type-checks
 
     // Background Jobs & Scheduling

apps/sim/next.config.ts

@@ -31,7 +31,7 @@ const nextConfig: NextConfig = {
   // Safe here since this repo's source is already fully public on GitHub -
   // no additional exposure versus Next's default (disabled to avoid leaking
   // source on the client).
-  productionBrowserSourceMaps: true,
+  productionBrowserSourceMaps: !isTruthy(env.NEXT_BUILD_DISABLE_SOURCE_MAPS),
   turbopack: {
     root: path.join(import.meta.dirname, '../..'),
   },
@@ -169,6 +169,7 @@ const nextConfig: NextConfig = {
     ],
   },
   experimental: {
+    turbopackInputSourceMaps: !isTruthy(env.NEXT_BUILD_DISABLE_SOURCE_MAPS),
     /**
      * Turbopack's dev filesystem cache stays ON (this is also the Next default
      * since v16.1). It is what makes a dev-server restart cheap: without it every

apps/sim/turbo.json

@@ -165,6 +165,7 @@
       ]
     },
     "build": {
+      "env": ["NEXT_BUILD_DISABLE_SOURCE_MAPS", "NEXT_BUILD_SKIP_TYPE_CHECK"],
       "inputs": [
         "$TURBO_DEFAULT$",
         ".env*",