Debug an electron app

Development
1

How should I go about debugging this app that gives me Trace/breakpoint trap (core dumped).

default.nix

{
stdenv, 
fetchFromGitHub,
keepBuildTree,
electron,
buildNpmPackage,
}:

buildNpmPackage rec {
	pname = "Caprine";
	version = "2.60.1";
	src = fetchFromGitHub {
		owner = "sindresorhus";
		repo = "caprine";
		rev = "v${version}";
		sha256 = "sha256-y4W295i7FhgJC3SlwSr801fLOGJY1WF136bbkkBUvyw=";
	};
	
	npmDepsHash = "sha256-JHaUc2p+wHsqWtls8xquHK9qnypuCrR0AQMGxcrTsC0=";	
	ELECTRON_SKIP_BINARY_DOWNLOAD = "1";

	nativeBuildInputs = [ keepBuildTree ];

	postBuild = ''
		npm exec electron-builder -- \
		--linux \
		--dir \
		-c.electronDist=${electron}/libexec/electron \
		-c.electronVersion=${electron.version}
	'';
		
}

Going to the build tree an execute the app gives me the core dump, executing it with `electron caprine’ I get:

App threw an error during load
TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension "" for /nix/store/8pl259qwcrsgvwhw7d1hcawhhsdn6b4d-Caprine-2.60.1/.build/source/dist/linux-arm64-unpacked/caprine
    at new NodeError (node:internal/errors:406:5)
    at Object.getFileProtocolModuleFormat [as file:] (node:internal/modules/esm/get_format:100:9)
    at defaultGetFormat (node:internal/modules/esm/get_format:143:36)
    at defaultLoad (node:internal/modules/esm/load:119:20)
    at ModuleLoader.load (node:internal/modules/esm/loader:396:13)
    at ModuleLoader.moduleProvider (node:internal/modules/esm/loader:278:56)
    at new ModuleJob (node:internal/modules/esm/module_job:65:26)
    at #createModuleJob (node:internal/modules/esm/loader:290:17)
    at ModuleLoader.getJobFromResolveResult (node:internal/modules/esm/loader:248:34)
    at ModuleLoader.getModuleJob (node:internal/modules/esm/loader:229:17)
A JavaScript error occurred in the main process
Uncaught Exception:
TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension "" for /nix/store/8pl259qwcrsgvwhw7d1hcawhhsdn6b4d-Caprine-2.60.1/.build/source/dist/linux-arm64-unpacked/caprine
    at new NodeError (node:internal/errors:406:5)
    at Object.getFileProtocolModuleFormat [as file:] (node:internal/modules/esm/get_format:100:9)
    at defaultGetFormat (node:internal/modules/esm/get_format:143:36)
    at defaultLoad (node:internal/modules/esm/load:119:20)
    at ModuleLoader.load (node:internal/modules/esm/loader:396:13)
    at ModuleLoader.moduleProvider (node:internal/modules/esm/loader:278:56)
    at new ModuleJob (node:internal/modules/esm/module_job:65:26)
    at #createModuleJob (node:internal/modules/esm/loader:290:17)
    at ModuleLoader.getJobFromResolveResult (node:internal/modules/esm/loader:248:34)
    at ModuleLoader.getModuleJob (node:internal/modules/esm/loader:229:17)
[71782:0823/135919.794161:ERROR:object_proxy.cc(576)] Failed to call method: org.freedesktop.DBus.Properties.Get: object_path= /org/freedesktop/portal/desktop: org.freedesktop.DBus.Error.InvalidArgs: No such interface “org.freedesktop.portal.FileChooser”
[71782:0823/135919.794877:ERROR:select_file_dialog_linux_portal.cc(290)] Failed to read portal version property
DRI driver not from this Mesa build ('24.2.0-devel' vs '24.0.7')
failed to bind extensions
DRI driver not from this Mesa build ('24.2.0-devel' vs '24.0.7')
failed to bind extensions
DRI driver not from this Mesa build ('24.2.0-devel' vs '24.0.7')
failed to bind extensions

electron-builder debug

2

Is this supposed to be an ES module?

3

I am following the build instructions at the bottom of GitHub - sindresorhus/caprine: Elegant Facebook Messenger desktop app. It says built with electron.

Edit: I misunderstood your question, ES doesn’t stand for electron… But I’m not that experienced with js and can’t really answer, because I simply don’t know

4

This kind of seems like Node.js is asked to execute that file and since the file doesn’t have an extension, Node.js fails to run it.

5

Sorry for my ignorance, but then how should I go about making this work? Executables in linux don’t have an extension so what is nodejs expecting?

6

That file is so supposed to be a program, not a module.

7

Node.js is the executable. It then interprets JavaScript files, which can be ES modules or scripts. It probably figures which is which from their extensions.

8

I looked at other examples of electron-builder apps and I needed to package it by using wrapProgram. Rookie mistake…