The code has been rewritten. The memory is managed. The browser is finally ready for Minecraft. Welcome to the future of Eaglercraft.
: Eaglercraft 1.12 includes integrated singleplayer with the ability to save worlds directly to browser storage (IndexedDB) or export them as .epk files. Performance & Requirements
In the old JavaScript version, Java objects were "wrapped" in JS objects. This double-wrapper consumed roughly 2x the memory of native Java. In the new WASM GC version, the objects map directly to WASM structs. Early benchmarks show that uses roughly 600MB of RAM where the old version would consume 1.2GB.