# ProbeJS Legacy<\/p>\n
is an unofficial continuation of ProbeJS for KubeJS versions abandoned by official ProbeJS.<\/p>\n
## Usage<\/p>\n
1. You need to install ProbeJS Legacy, obviously.
\n2. Enter a singleplayer world. Use `\/probejs dump` to export datas gathered by ProbeJS Legacy. For first-time users, this will be done automatically when you join the world.
\n3. Open your game instance folder using VSCode.
\n4. Enjoy!<\/p>\n
Note0: type `@item` or `@block_tag` to see snippets generated.<\/p>\n
Note1: game instance folder is where you can see the `kubejs` folder directly.<\/p>\n
Note2: Other IDEs with support for TypeScript typing (.d.ts) should also work.<\/p>\n
## New Features<\/p>\n
(Compared to ProbeJS)<\/p>\n
– Simulated `Internal`
\n – ProbeJS Legacy will now generate a `Internal` namespace, allowing users to migrate from ProbeJS 6 or ProbeJS Legacy 3 easily.
\n – Example: `Internal.ItemStack` and `Internal.ItemStack_`<\/p>\n
– Better Param Naming
\n – Param names that conflict with TypeScript will now be renamed in a better way.
\n – Param names in Method\/Constructor, if in `arg123` format, will be renamed to a new name generated from its type.<\/p>\n
Example:<\/p>\n
“`typescript
\n“mayUseItemAt”(arg0: $BlockPos$$Type, arg1: $Direction$$Type, arg2: $ItemStack$$Type): boolean
\n“`
\nwill be renamed to<\/p>\n
“`typescript
\n“mayUseItemAt”(blockPos0: $BlockPos$$Type, direction1: $Direction$$Type, itemStack2: $ItemStack$$Type): boolean
\n“`<\/p>\n
– Better `$Class – better `instanceof` Example:<\/p>\n “`js let item = Item.of(“boat”).item; \/\/ here the type of `item` is `$Item` – Field Beaning – Typing files sharing – Better comment formatting – Side only methods (marked by `@OnlyIn`) will have comments telling you that it’s server-only or client-only.<\/p>\n – `xxx.d.ts` file with too many modules in it will now be split into smaller files automatically, providing better IDE performance<\/p>\n – Method\/Field in declaration files are now naturally sorted.<\/p>\n – `gloabl` resolving: values you put into `global` can be resolved now. Configure resolving depth via `’global’ Resolving Depth` config.<\/p>\n – And many internal changes. This Readme will certainly be too long if I write them all down.<\/p>\n ## Collecting data<\/p>\n ### KubeJS Event<\/p>\n For 1.16.5, ProbeJS Legacy will record all posted event. If you’re unable to find some common events, try triggering it before dumping data. Example: `block.place` event is triggered by placing a block.<\/p>\n For 1.20.1, all registered KJS events will be dumped automatically, no need for triggering.<\/p>\n ### Forge Event<\/p>\n ProbeJS Legacy will record all Forge events, regardless of whether they have been posted or not. This behaviour can be altered via `Class Scanner` config.<\/p>\n ### Java Classes<\/p>\n ProbeJS Legacy will use multiple approaches for collecting Java classes.<\/p>\n These classes will be recorded: ## Why<\/p>\n Initially, all I want to do is just find some sort of doc or helper for KubeJS script writing, so that I won’t need to feel such pain in the arse when developing Enlightend6Expert(https:\/\/www.curseforge.com\/minecraft\/modpacks\/enlightened-6-expert) . This project is licensed under LGPLv3, the same as the original ProbeJS.<\/p>\n","protected":false},"excerpt":{"rendered":" Unofficial continuation of ProbeJS for versions abandoned by official ProbeJS<\/p>\n","protected":false},"featured_media":125211,"template":"","meta":{"_minecraft_slug":"probejs-legacy","_minecraft_project_id":"KVw0Q70k","_minecraft_author":"ZZZank","_minecraft_license":"GPL-3.0-only","_minecraft_downloads":6620,"_minecraft_follows":0,"_minecraft_client_side":"required","_minecraft_server_side":"required","_minecraft_storage_type":"zip","_minecraft_archive_name":"probejs-legacy.zip","_minecraft_size_bytes":4903827,"_minecraft_version_count":10,"_minecraft_updated_at":"2026-05-16T16:31:59.771554Z","_minecraft_date_created":"2026-01-29T03:13:50.981127Z","_minecraft_date_modified":"2026-05-14T12:28:38.773037Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/probejs-legacy","_minecraft_icon_attachment_id":125211,"_minecraft_imported_at":"2026-06-07T08:33:20+00:00","_minecraft_import_hash":"82392b244a0ef1e61c076fb15a981730","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[104,873,92],"mod_loader":[106],"minecraft_version":[48,36,60,93,94,101,102],"class_list":["post-125210","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-forge","mod_category-library","mod_category-utility","mod_loader-forge","minecraft_version-1-16-5","minecraft_version-1-20-1","minecraft_version-1-20-2","minecraft_version-1-20-3","minecraft_version-1-20-4","minecraft_version-1-20-5","minecraft_version-1-20-6"],"yoast_head":"\n
\n – ProbeJS will transform `$Class
\n – Some basic classes, for example `java.lang.String` and `java.lang.Character`. can now be dumped.
\n – The `T` in `$Class
\n – ProbeJS Legacy can now properly support `obj instanceof $SomeClass`, where `$SomeClass` is a class loaded via `java(…)` or `Java.loadClass(…)`.<\/p>\n
\nconst $BoatItem = java(“some.path.to.BoatItem”)<\/p>\n
\nif (item instanceof $BoatItem) {
\n \/\/ here the type of `item` can be inferred to `$BoatItem`
\n}
\n“`<\/p>\n
\n – Some fields will be transformed into getter+setter, in order to provide better support for TypeWrapper
\n – Consider a `obj` with a field like this: `block: $Block`, and `obj.block = “minecraft:stone”` is a valid syntax in KubeJS. This had no typing support before, but now ProbeJS Legacy can support it properly.<\/p>\n
\n – By extracting common parts in dumped classes, the total typing files size can be much smaller than before.
\n – Another benefits is that TS server can now reuse common typings between 3 script types, improving IDE performance.<\/p>\n
\n – blank lines at the front\/back will now be ignored
\n – comments will be formatted as one line if there’s only one valid line<\/p>\n
\n– Classes loaded manually, aka those loaded via `java(…)` or `Java.loadClass(…)`
\n– Classes referenced by JS bindings, for example `AABB` and `Text`.
\n– Classes references by known classes, for example `Item.class` referenced by `ItemStack.class`.
\n– Registry objects, for example `BoatItem` for vanilla boats. By default this will skip non-vanilla objects, and can be altered via `Registry Object Filter` config.
\n– Classes from certain mods. See `Mods with forced Full Scanning` config.
\n– Classes read from cache file. The cache file is saved to `
\n– Classes found by class scanner. See `Class Scanner` config.<\/p>\n
\nBut after some research, I realized that 1.16.5, despite being one of the hottest modded versions, didn’t even have a proper KubeJS helper mod.
\nSo there it is, a ProbeJS fork for 1.16.5.
\nThis is my first Java project and first Minecraft Mod project, and to be honest, ProbeJS is too tough for a coding noob like me. Thankfully I made it.<\/p>\n