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fix(desktop): fail loudly instead of blank-paging when the renderer bundle is missing (#41729)

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A packaged desktop app launches to a blank page with a bare
ERR_FILE_NOT_FOUND when dist/index.html isn't in the bundle (#39484).
This happens when the build step fails (e.g. a stale checkout that
fails typecheck) but electron-builder packages anyway, shipping an
empty dist/.

- build-time: scripts/assert-dist-built.cjs runs at the tail of the
  `build` script and aborts before electron-builder if dist/index.html
  or the vite JS bundle is missing/empty. Every packaging path
  (pack, dist*) inherits it via `npm run build &&`.
- runtime: resolveRendererIndex() now logs a clear 'packaged without a
  renderer bundle — rebuild with hermes desktop --force-build' message
  when no index.html exists, instead of silently loading a missing path.
- runtime: resolveWebDist() logs when it falls back to an asar-internal
  dist that isn't a real directory (the dashboard 404 class, #41327/#39472),
  rather than returning an unservable path silently.

Adds scripts/assert-dist-built.test.cjs (node:test) covering the guard.
This commit is contained in:
Teknium
2026-06-07 22:04:39 -07:00
committed by GitHub
parent 53a2ac8f2d
commit bddc5fd087
4 changed files with 181 additions and 3 deletions
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apps/desktop/package.json
+1 -1
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@@ -18,7 +18,7 @@
"profile:main": "wait-on http://127.0.0.1:5174 && cross-env XCURSOR_SIZE=24 HERMES_DESKTOP_DEV_SERVER=http://127.0.0.1:5174 electron --inspect=9229 .",
"profile:main:cpu": "wait-on http://127.0.0.1:5174 && cross-env XCURSOR_SIZE=24 NODE_OPTIONS=--cpu-prof HERMES_DESKTOP_DEV_SERVER=http://127.0.0.1:5174 electron .",
"start": "npm run build && electron .",
"build": "node scripts/assert-root-install.cjs && node scripts/write-build-stamp.cjs && node scripts/stage-native-deps.cjs && tsc -b && vite build",
"build": "node scripts/assert-root-install.cjs && node scripts/write-build-stamp.cjs && node scripts/stage-native-deps.cjs && tsc -b && vite build && node scripts/assert-dist-built.cjs",
"builder": "cross-env NODE_OPTIONS=--max-old-space-size=16384 electron-builder",
"pack": "npm run build && npm run builder -- --dir",
"dist": "npm run build && npm run builder",