[Home](./index.md) > [@keymanapp/kmc-kmn](./kmc-kmn.md) > [KmnCompiler](./kmc-kmn.kmncompiler.md) > [init](./kmc-kmn.kmncompiler.init.md) ## KmnCompiler.init() method Initialize the compiler, including loading the WASM host for kmcmplib. Copies options. **Signature:** ```typescript init(callbacks: CompilerCallbacks, options: KmnCompilerOptions): Promise; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | callbacks | CompilerCallbacks | Callbacks for external interfaces, including message reporting and file io | | options | [KmnCompilerOptions](./kmc-kmn.kmncompileroptions.md) | Compiler options | **Returns:** Promise<boolean> false if initialization fails