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    Command: `hapi build`

    #### Description

    The `hapi build` command, when available in a Hapi CLI, is designed to prepare your Hapi.js application for deployment. This typically involves tasks such as transpiling source code (e.g., TypeScript to JavaScript), copying necessary files to a distribution directory, optimizing assets, and ensuring the application is ready to run in a production environment.

    While a direct, official "Hapi CLI" with a `build` command isn't a standard part of the core Hapi.js ecosystem (Hapi applications are usually built using general Node.js build tools like `npm scripts`, Webpack, Rollup, or TypeScript compilers), if one existed, its `build` command would streamline the process of transforming development code into a production-ready package.

    #### Syntax

    hapi build [options]

    #### Options (Hypothetical)

    * `--output <path>`: Specifies the output directory for the built application. Defaults to `./dist` or similar.

    * Example: `hapi build --output ./release`

    * `--env <environment>`: Sets the build environment. Common values include `production`, `development`, or `staging`. This can influence optimizations, logging levels, and environment-specific configurations.

    * Example: `hapi build --env production`

    * `--clean`: Removes the output directory before starting the build process, ensuring a fresh build.

    * Example: `hapi build --clean`

    * `--minify`: Minifies JavaScript and CSS assets (if the Hapi application serves client-side assets or includes them in the build process).

    * Example: `hapi build --minify`

    * `--sourcemaps`: Generates source maps, useful for debugging production builds. Typically disabled for production, enabled for development.

    * *Example:* `hapi build --sourcemaps`

    * `--watch`: (Less common for `build`, more for `dev`) Watches for file changes and rebuilds automatically. If present on `build`, it might imply a continuous build for CI/CD or staging environments.

    #### Usage Examples

    1. **Basic Production Build:**

    bash
    hapi build

    This command would build the Hapi.js application for production using default settings, likely minifying code and targeting the `./dist` directory.

    2. **Build for Staging Environment:**

    bash
    hapi build --env staging --output ./build-staging

    Builds the application specifically for a staging environment, potentially with different configuration files or API endpoints, and places the output in a custom directory.

    3. **Clean Build with Source Maps for Debugging:**

    bash
    hapi build --clean --sourcemaps --env development

    This command first cleans the output directory, then builds the application for a development environment, including source maps to facilitate debugging, and typically avoids minification.

    4. **Minified Build for Production:**

    bash
    hapi build --minify --output ./prod-app

    Explicitly requests minification of assets and specifies a custom output directory for the production build.

    #### Explanation

    The `hapi build` command orchestrates the entire process of taking your Hapi.js project's source code and transforming it into a deployable package. It acts as an abstraction over various underlying tools (like Babel for transpilation, webpack/rollup for bundling if applicable, etc.) that would typically be configured via `package.json` scripts or dedicated configuration files.

    The goal is to produce a self-contained, optimized, and ready-to-run version of your server-side application, often placed in a designated output folder, which can then be deployed to a server or container.