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wasmer/lib/README.md

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# Wasmer Libraries
Wasmer is modularized into different libraries, separated into three main sections:
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- [Runtime](#runtime)
- [Integrations](#integrations)
- [Backends](#backends)
## Runtime
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The core of Wasmer is the runtime, which provides the necessary
abstractions to create a good user experience when embedding.
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The runtime is divided into two main libraries:
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- [runtime-core](./runtime-core/): The main implementation of the runtime.
- [runtime](./runtime/): Easy-to-use API on top of `runtime-core`.
## Integrations
The integration builds on the Wasmer runtime and allow us to run WebAssembly files compiled for different environments.
Wasmer intends to support different integrations:
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- [WASI](./wasi): run WebAssembly files with the [WASI ABI](https://hacks.mozilla.org/2019/03/standardizing-wasi-a-webassembly-system-interface/).
- [Emscripten](./emscripten): run Emscripten-generated WebAssembly files, such as [Lua](../examples/lua.wasm) or [nginx](../examples/nginx/nginx.wasm).
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- Go ABI: _we will work on this soon! Want to give us a hand? ✋_
- Blazor: _research period, see [tracking issue](https://github.com/wasmerio/wasmer/issues/97)_
## Backends
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The Wasmer [runtime](./runtime) is designed to support multiple compiler backends, allowing the user
to tune the codegen properties (compile speed, performance, etc) to best fit their use case.
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Currently, we support multiple backends for compiling WebAssembly to machine code:
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- [singlepass-backend](./singlepass-backend/): Single pass backend - super fast compilation, slower runtime speed
- [clif-backend](./clif-backend/): Cranelift backend - slower compilation, normal runtime speed
- [llvm-backend](./llvm-backend/): LLVM backend - slow compilation, native runtime speed