[Tech] Source map support for the Backend

[CommandMC]

The Backend is now aware of the source map included with development builds of Heroic, meaning error stacktraces turn from something completely unhelpful:

(node:21029) UnhandledPromiseRejectionWarning: Error: A scary error
    at Yu (/home/mathis/src/HeroicGamesLauncher/build/main/main.js:114:807)
    at fm (/home/mathis/src/HeroicGamesLauncher/build/main/main.js:98:4744)
    at /home/mathis/src/HeroicGamesLauncher/build/main/main.js:184:24278

into very clear:

(node:22829) UnhandledPromiseRejectionWarning: Error: A scary error
    at LegendaryLibraryManager.initLegendaryLibraryManager (/home/mathis/src/HeroicGamesLauncher/src/backend/storeManagers/legendary/library.ts:79:9)
    at initStoreManagers (/home/mathis/src/HeroicGamesLauncher/src/backend/storeManagers/index.ts:81:9)
    at /home/mathis/src/HeroicGamesLauncher/src/backend/main.ts:306:23

Note that this is only a feature in development builds of Heroic. Including it in release builds would be possible, but would add about 20MB onto any build

The Frontend is already able to parse these by default, so I've not added the source-map-support module there. Similarly, the preload is so small that it'd probably not help much there.

Additionally, I've enabled minification for development builds now as well, as it just leads to less work for Node when parsing the JS file

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[arielj]

this is great

I see some minified code but maybe it's not possible to have all the methods/function names? not sure but for example I got this error:

(22:02:46) ERROR:   [Legendary]:        TypeError: Cannot read properties of null (reading 'find')
    at hp (/home/ariel/dev/oss/HeroicGamesLauncher/src/backend/storeManagers/legendary/games.ts:163:48)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at Module.mp [as getExtraInfo] (/home/ariel/dev/oss/HeroicGamesLauncher/src/backend/storeManagers/legendary/games.ts:314:16)
    at WebContents.<anonymous> (node:electron/js2c/browser_init:2:79404)

and the paths are correct, but it shows at hp and at Module.mp for function in those 2 source files

I got that issue opening a game page (>Observer_) and it failed to get the productSlug if it helps with debugging

I'm fine without the function name though if this is not easy to solve, the file name and line is already great and the function names can be found easily once you get there

[CommandMC]

Not sure why that's happening, it might have trouble with us having multiple getExtraInfo functions (one for each store)? I see the same happening for launch for example, but it doesn't happen for unique ones (initLegendaryLibraryManager in my example above)

The important thing (for me at least) are the line numbers though, being able to click those in the terminal to pull up the relevant code is still very helpful

[arielj]

I think it's fine to ignore that then, the ts file with the line number is already enough