`EISDIR: illegal operation on a directory, read` error after library upgrade

[meirish]

Hello!

We recently upgraded @auth0/auth0-spa-js to a more recent version and our production build started failing with this error:

cleaning up...
Build Error (UglifyWriter)
EISDIR: illegal operation on a directory, read

Notably v1.6.2 does not have this error, but anything from 1.7.0 does.

Reproducing it locally I found this log from the error dump:

ERROR Summary:

  - broccoliBuilderErrorStack: Error: EISDIR: illegal operation on a directory, read
    at Object.readSync (fs.js:523:3)
    at tryReadSync (fs.js:348:20)
    at Object.readFileSync (fs.js:385:19)
    at getSourceMapContent (/Users/meirish/code/cloud-ui/node_modules/broccoli-uglify-sourcemap/lib/get-sourcemap-content.js:18:30)
    at processFile (/Users/meirish/code/cloud-ui/node_modules/broccoli-uglify-sourcemap/lib/process-file.js:41:19)
    at Function.processFileParallel (/Users/meirish/code/cloud-ui/node_modules/broccoli-uglify-sourcemap/lib/worker.js:9:10)
    at MessagePort.<anonymous> (/Users/meirish/code/cloud-ui/node_modules/broccoli-uglify-sourcemap/node_modules/workerpool/dist/workerpool.min.js:25:16559)
    at MessagePort.emit (events.js:311:20)
    at MessagePort.onmessage (internal/worker/io.js:78:8)

What ends up happening here is srcURL.from() here: https://github.com/ember-cli/broccoli-uglify-sourcemap/blob/master/lib/get-sourcemap-content.js#L10 returns an empty string '' as the first item in the urls array when it gets to our app's vendor.js file, which then errors here: https://github.com/ember-cli/broccoli-uglify-sourcemap/blob/master/lib/get-sourcemap-content.js#L18 when it tries to read a directory instead of a file.

Removing the empty string from the array results in a successful build, but with this warning:

[UglifyWriter][WARN] (broccoli-uglify-sourcemap) "chunk.40bafbb6f4ed25560db2.js.map;", "chunk.cc45f8eb6b4af1864c92.js.map//#" referenced in "assets/vendor.js" could not be found

Which seems to point to ember-auto-import.

I'm uncertain where the issue is - is it in the auth0 source map urls, the source-map-url package that returns '', or maybe ember-auto-import. Has anyone ever seen this or have any guidance for where to look further?

[wagenet]

I'm hitting a similar issue.

[wagenet]

Interestingly, this is happening when I upgrade from @auth0/auth0-spa-js 1.16.0 to 1.16.1.

[ddoria921]

@meirish @wagenet Ran into something similar. This seems to be fixed in this PR #313

[NullVoxPopuli]

Should be released, too: https://github.com/ember-cli/broccoli-terser-sourcemap/releases/tag/v4.1.1

does upgrading to 4.1.1 solve this for ye?

[ddoria921]

I was able to fix it by installing broccoli-terser-sourcemap@4.1.1 in my project. I noticed that ember-cli-terser wasn't auto installing the latest version for whatever reason? Even though their package.json allows for it https://github.com/ember-cli/ember-cli-terser/blob/f3b5fd4875697c223fb1a9414c568c3aadbc017c/package.json#L25

[NullVoxPopuli]

likely has to do with your lockfile -- generally when you need to update transient / sub-sub deps, I like to delete the entries in the lockfile, and let the package manager re-resolve what the correct version is.

anywho! most excellent!

I'm going to close this issue, and we can probably open a new one if a similar issue arises!