这是40code编辑器的vm，采用AGPL协议，协议详见AGPL-LICENSE文件
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此编辑器二次开发自turbowarp，以下是turbowarp的原README文件
Modified Scratch VM with a JIT compiler and more features.
This is a drop-in replacement for LLK/scratch-vm.
See https://github.com/TurboWarp/scratch-gui/wiki/Getting-Started to setup the complete TurboWarp environment.
If you just want to play with the VM then it's the same process as upstream scratch-vm.
If you only use the standard reporter, boolean, and command block types, everything should just work without any changes.
For a high-level overview of how the compiler works, see https://docs.turbowarp.org/how
For more technical information, read the code in src/compiler.
This section was too out of date to be useful. We hope to re-add it as some point.