Build succeeds even when pre-generation of some routes fails

[VasylMarchuk]

Hi there!

We're using Prember in our project and have an array of routes for pre-rendering returned by a custom urls method in our ember-cli-build.js like so:

/tracks/scala
/languages/rust
/languages/go
...
/collections/rust-primer

The Problem

The problem we're facing is when some of the routes fail to render in FastBoot mode due to errors that manage to slip through our testing pipeline — running ember build --environment=production still succeeds with an exit code of 0, and it even reads Built project successfully. Stored in "dist/". in the output.

This leads to our production deployment script on Vercel to consider the deployment a complete success, and to problems notifications emails to never be sent :(

Is this behavior expected? Or is it supposed to be failing but for some reason doesn't? Do we have to manually grep the output for error-looking messages or would it be possible to maybe add a configuration option like failBuildOnErrors=true?

Thanks!

Log output

[13:41:32.221] Building
[13:41:32.222] Environment: production
[13:41:35.632] building... 
[13:41:35.735] (node:171) [DEP_WEBPACK_JAVASCRIPT_MODULES_PLUGIN] DeprecationWarning: webpack.JavascriptModulesPlugin has moved to webpack.javascript.JavascriptModulesPlugin
[13:41:35.735] (Use `node --trace-deprecation ...` to show where the warning was created)
[13:41:35.735] (node:171) [DEP_WEBPACK_LIBRARY_TEMPLATE_PLUGIN] DeprecationWarning: webpack.LibraryTemplatePlugin is deprecated and has been replaced by compilation.outputOptions.library or compilation.addEntry + passing a library option
[13:41:35.735] (node:171) [DEP_WEBPACK_SINGLE_ENTRY_PLUGIN] DeprecationWarning: SingleEntryPlugin was renamed to EntryPlugin
[13:41:35.735] (node:171) [DEP_WEBPACK_OPTIONS_DEFAULTER] DeprecationWarning: webpack.WebpackOptionsDefaulter is deprecated and has been replaced by webpack.config.getNormalizedWebpackOptions and webpack.config.applyWebpackOptionsDefaults
[13:42:28.031] [BABEL] Note: The code generator has deoptimised the styling of /vercel/path0/node_modules/shiki/dist/langs/emacs-lisp.mjs as it exceeds the max of 500KB.
[13:42:30.582] [BABEL] Note: The code generator has deoptimised the styling of /vercel/path0/node_modules/shiki/dist/langs/emacs-lisp.mjs as it exceeds the max of 500KB.
[13:42:37.855] [BABEL] Note: The code generator has deoptimised the styling of /vercel/path0/node_modules/@shikijs/core/dist/wasm-inlined.mjs as it exceeds the max of 500KB.
[13:42:38.352] [BABEL] Note: The code generator has deoptimised the styling of /vercel/path0/node_modules/@shikijs/core/dist/wasm-inlined.mjs as it exceeds the max of 500KB.
[13:42:44.637] [BABEL] Note: The code generator has deoptimised the styling of /vercel/path0/node_modules/lottie-web/build/player/lottie.js as it exceeds the max of 500KB.
[13:42:46.208] [BABEL] Note: The code generator has deoptimised the styling of /vercel/path0/node_modules/lottie-web/build/player/lottie.js as it exceeds the max of 500KB.
[13:43:48.973] (node:171) [DEP_WEBPACK_COMPILATION_ASSETS] DeprecationWarning: Compilation.assets will be frozen in future, all modifications are deprecated.
[13:43:48.974] BREAKING CHANGE: No more changes should happen to Compilation.assets after sealing the Compilation.
[13:43:48.974] 	Do changes to assets earlier, e. g. in Compilation.hooks.processAssets.
[13:43:48.974] 	Make sure to select an appropriate stage from Compilation.PROCESS_ASSETS_STAGE_*.
[13:45:38.462] pre-render /tracks/scala 200 OK
[13:45:41.379] There was an error running your app in fastboot. More info about the error: 
[13:45:41.379]  TypeError: window.matchMedia is not a function
[13:45:41.380]     at new r (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/assets/webpack:/codecrafters-frontend/services/dark-mode.ts:36:31)
[13:45:41.380]     at Function.create (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at h.create (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at i.lookup (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at u.lookup (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at r.i (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at e.untrack (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at pe.get (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at r [as darkMode] (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at Re (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at e.track (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at d (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at e.track (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at d (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at e.track (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at d (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.380]     at e.track (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at d (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at Object.evaluate (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at Object.evaluate (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at It.evaluateSyscall (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.380]     at It.evaluateInner (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at It.evaluateOuter (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at Wt.next (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at Wt._execute (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at Wt.execute (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at Qt.sync (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at hr.render (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at /tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1
[13:45:41.381]     at Nt (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at gr._renderRoots (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at gr._renderRootsTransaction (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at gr._revalidate (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at invokeWithOnError (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at h.flush (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at p.flush (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at B._end (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at B.end (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.381]     at B._run (/tmp/broccoli-171oPeI37DeUbo1/out-1444-packager_runner_embroider_webpack/rewritten-packages/@embroider/synthesized-vendor/vendor/loader/loader.js:4:1)
[13:45:41.409] pre-render /collections/rust-primer 200 OK
[13:45:41.412] Inserted default meta tags into _empty.html file
[13:45:41.703] cleaning up
[13:45:41.703] cleaning up...
[13:45:42.074] Built project successfully. Stored in "dist/".
[13:45:42.429] File sizes:
[13:45:42.429]  - dist/assets/chunk.004e683aaecc2f7337ad.js: 16.16 kB (3.45 kB gzipped)
[13:45:42.430]  - dist/assets/chunk.0059749682610edeb9a8.js: 5.53 kB (2.42 kB gzipped)