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# Backends
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Sabre currently implements a JavaScript backend, but a C backend is in development. WASM, ARM and x86 are planned.
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The backend can be specified in the `Cargo.toml` file in the root of the project:
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```toml
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[features]
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...
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default = ["backend_c"]
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```
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If you're working on an unstable backend, you can override the backend using the `--features --no-default-features` flag of the cargo CLI:
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```
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cargo run --no-default-features --features backend_llvm ...
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```
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## Available Backends
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| Target Language | Identifier | Stability notice |
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| :-------------- | :------------- | :--------------- |
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| Node.js | `backend_node` | mostly stable |
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| LLVM | `backend_llvm` | unstable |
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| C | `backend_c` | unstable |
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