Directory is not packaged in mac universal build

[ttpssabc]

• Electron-Builder Version: 24.12.0

• Node Version: v21.5.0

• Electron Version: 29.0.1
• Electron Type (current, beta, nightly): current

• Target: mac/universal

The structure of my Electron project is as follows:

├── css
│   ├── v1 -> v1.1
│   └── v1.1
│       └── style.css
├── index.html
├── index.js
├── package.json
└── yarn.lock

In the css directory, there exists a subdirectory named v1.1, which is pointed to by a symbolic link named v1. The index.html file references css/v1/style.css to load the stylesheet.

Problem

When I build the project with the target set to mac/universal, I encounter the error "Failed to load resource: net::ERR_FILE_NOT_FOUND" while loading the stylesheet. I unpack the app.asar and find out that the v1.1 directory is missing while the symbolic link v1 exists. I attempted to build the project targeting mac/arm64 or mac/x64, and encountered no issues. From my observations, it appears that the problem occurs only when there is a symbolic link pointing to a directory whose name contains a dot (.), and the target is set to mac/universal.

[mmaietta]

So, all electron-builder is doing is using @electron/universal package to stitch together the compiled asars. I'd recommend opening an issue there describing your issue, as I don't think there's something we can do from electron-builder side if your individual arm64 and x64 builds are working correctly?

electron-builder/packages/app-builder-lib/src/macPackager.ts

Lines 139 to 148 in e6f1beb

	const { makeUniversalApp } = require("@electron/universal")
	await makeUniversalApp({
	x64AppPath: path.join(x64AppOutDir, appFile),
	arm64AppPath: path.join(arm64AppOutPath, appFile),
	outAppPath: path.join(appOutDir, appFile),
	force: true,
	mergeASARs: platformSpecificBuildOptions.mergeASARs ?? true,
	singleArchFiles: platformSpecificBuildOptions.singleArchFiles,
	x64ArchFiles: platformSpecificBuildOptions.x64ArchFiles,
	})

[ttpssabc]

Thanks for the information! I found out the root cause is from electron/asar#303