Stack Deobfuscator

Warning

This mod is obsolete for all Minecraft versions newer than 1.21.11. It will still be maintained for older versions.

Downloads

• Modrinth: https://modrinth.com/mod/stackdeobf
• Curseforge: https://curseforge.com/minecraft/mc-mods/stackdeobf

The configuration is documented on the wiki.

A hosted web-version is available at stackdeobf.net. See wiki for self-hosting this page.

What does this mod do?

All errors displayed in the console and all crash reports will be remapped from unreadable production names (e.g. net.minecraft.class_310) to readable mapped names (e.g. net.minecraft.client.MinecraftClient).

This allows mod developers to more easily identify issues in a non-development environment, as the errors are instantly human-readable.

Comparison

Before

[23:13:08] [Render thread/ERROR]: Reported exception thrown!
net.minecraft.class_148: Manually triggered debug crash
at net.minecraft.class_309.method_1474(class_309.java:509) ~[client-intermediary.jar:?]
at net.minecraft.class_310.method_1574(class_310.java:1955) ~[client-intermediary.jar:?]
at net.minecraft.class_310.method_1523(class_310.java:1180) ~[client-intermediary.jar:?]
at net.minecraft.class_310.method_1514(class_310.java:801) ~[client-intermediary.jar:?]
at net.minecraft.client.main.Main.main(Main.java:237) ~[minecraft-1.19.4-client.jar:?]
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:462) ~[fabric-loader-0.14.18.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.14.18.jar:?]
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.14.18.jar:?]
at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:88) ~[NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.listen(EntryPoint.java:126) ~[NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.main(EntryPoint.java:71) ~[NewLaunch.jar:?]
Caused by: java.lang.Throwable: Manually triggered debug crash
at net.minecraft.class_309.method_1474(class_309.java:506) ~[client-intermediary.jar:?]
... 10 more

After (yarn/quilt mappings)

[23:11:25] [Render thread/ERROR]: Reported exception thrown!
net.minecraft.util.crash.CrashException: Manually triggered debug crash
at net.minecraft.client.Keyboard.pollDebugCrash(Keyboard.java:509) ~[client-intermediary.jar:?]
at net.minecraft.client.MinecraftClient.tick(MinecraftClient.java:1955) ~[client-intermediary.jar:?]
at net.minecraft.client.MinecraftClient.render(MinecraftClient.java:1180) ~[client-intermediary.jar:?]
at net.minecraft.client.MinecraftClient.run(MinecraftClient.java:801) ~[client-intermediary.jar:?]
at net.minecraft.client.main.Main.main(Main.java:237) ~[minecraft-1.19.4-client.jar:?]
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:462) ~[fabric-loader-0.14.18.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.14.18.jar:?]
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.14.18.jar:?]
at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:88) ~[NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.listen(EntryPoint.java:126) ~[NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.main(EntryPoint.java:71) ~[NewLaunch.jar:?]
Caused by: java.lang.Throwable: Manually triggered debug crash
at net.minecraft.client.Keyboard.pollDebugCrash(Keyboard.java:506) ~[client-intermediary.jar:?]
... 10 more

After (mojang mappings)

[23:04:12] [Render thread/ERROR]: Reported exception thrown!
net.minecraft.ReportedException: Manually triggered debug crash
at net.minecraft.client.KeyboardHandler.tick(KeyboardHandler.java:509) ~[client-intermediary.jar:?]
at net.minecraft.client.Minecraft.tick(Minecraft.java:1955) ~[client-intermediary.jar:?]
at net.minecraft.client.Minecraft.runTick(Minecraft.java:1180) ~[client-intermediary.jar:?]
at net.minecraft.client.Minecraft.run(Minecraft.java:801) ~[client-intermediary.jar:?]
at net.minecraft.client.main.Main.main(Main.java:237) ~[minecraft-1.19.4-client.jar:?]
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:462) ~[fabric-loader-0.14.18.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.14.18.jar:?]
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.14.18.jar:?]
at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:88) ~[NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.listen(EntryPoint.java:126) ~[NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.main(EntryPoint.java:71) ~[NewLaunch.jar:?]
Caused by: java.lang.Throwable: Manually triggered debug crash
at net.minecraft.client.KeyboardHandler.tick(KeyboardHandler.java:506) ~[client-intermediary.jar:?]
... 10 more

Mappings Overview

Mappings are downloaded and parsed asynchronously. They are downloaded only once per version. Yarn and Quilt refresh their version every 48 hours to check for updates.

Mappings	Compatible Minecraft Versions	Download Size (zipped¹)²	Cached Size (gzipped)²
Yarn	18w49a (1.14 snapshot) or higher	1.4 MiB	1.4 MiB
Quilt	1.18.2 or higher	1.4 MiB (+1.1 MiB below 1.19.2)	1.4 MiB (+1.1 MiB below 1.19.2)
Mojang	1.14.4 and 19w36a (1.15 snapshot) or higher	9.0 MiB (uncompressed) + 559.1 KiB	1.3 MiB + 558.6 KiB

¹: Mojang mappings are not compressed
²: Sizes as of 12th May 2024 (1.20.6 is latest)

Building

./gradlew build # remove "./" on windows

The output jar can be found in build → libs.

License

This project is licensed under LGPL-3.0-only unless specified otherwise.