npm package: @flownet/lib-v8-build
Description: V8 build for iOS and macOS
Author: Gultekin Boyraz
Latest version: 0.2.2

# @flownet/lib-v8-build

## Introduction

The `@flownet/lib-v8-build` is a utility designed to simplify the process of fetching, building, and distributing the V8 JavaScript engine for specific platforms and architectures. It focuses on automating the setup and build process, enabling users to compile V8 for iOS and macOS environments efficiently.

## How It Works

This utility automates the retrieval of the V8 source code and its dependencies, configures the build system, and compiles the V8 engine tailored for the specified target operating system (iOS or macOS), CPU architecture (x64 or ARM64), and environment (simulator or device). Users can choose either an interactive setup or a straightforward build process. Once built, the resulting binaries are organized and made ready for integration with development projects.

## Key Features

- Automates fetching and syncing of V8 source dependencies.
- Configures build environment using GN, a meta-build system for managing build configurations.
- Supports building for iOS and macOS, catering to different target environments like simulators and actual devices.
- Handles architecture-specific compilations for x64 and arm64.
- Outputs built libraries in a structured format for easy integration into projects.

## Conclusion

`@flownet/lib-v8-build` is a practical tool for developers needing to compile and integrate the V8 engine into iOS and macOS applications. By automating various steps in the build process, it reduces manual effort and helps maintain compatibility with the ever-evolving landscape of Apple platforms.


# @flownet/lib-v8-build: Developer Guide

## Overview

The `@flownet/lib-v8-build` library is designed to streamline the process of building the V8 JavaScript engine for specific operating systems and architectures. Utilizing this library, developers can automate setting up the environment, fetching the V8 source code, and configuring the build process for creating platform-specific binaries. The library focuses on iOS and macOS platforms, supporting different CPUs and environments like simulators and physical devices.

## Installation

To incorporate `@flownet/lib-v8-build` into your project, you can use either npm or yarn. Execute the following command in your terminal:

```bash
# Using npm
npm install @flownet/lib-v8-build

# Using yarn
yarn add @flownet/lib-v8-build
```

## Usage

The library exports a single asynchronous function that handles the entire build process from start to finish. Here's how you can use it in your project:

### Example Usage

```javascript
import buildV8 from '@flownet/lib-v8-build';

async function build() {
  try {
    const buildOptions = {
      interactive: false,
      targetOs: 'ios', // options: 'ios', 'macos'
      targetCpu: 'arm64', // options: 'x64', 'arm64'
      targetEnv: 'device' // options: 'simulator', 'device'
    };

    const context = await buildV8(buildOptions);
    console.log("Build completed successfully:", context);
  } catch (error) {
    console.error("An error occurred during the build process:", error);
  }
}

build();
```

In this example, the `buildV8` function is invoked with specific options to build the V8 engine for an iOS device running on an arm64 CPU.

## Examples

### Basic iOS Build

```javascript
import buildV8 from '@flownet/lib-v8-build';

async function buildIOS() {
  const options = {
    targetOs: 'ios',
    targetCpu: 'arm64',
    targetEnv: 'device'
  };
  
  const context = await buildV8(options);
  console.log(context);
}

buildIOS();
```

### macOS Simulator Build

```javascript
import buildV8 from '@flownet/lib-v8-build';

async function buildMacOSSimulator() {
  const options = {
    targetOs: 'macos',
    targetCpu: 'x64',
    targetEnv: 'simulator'
  };

  const context = await buildV8(options);
  console.log(context);
}

buildMacOSSimulator();
```

These examples demonstrate how to configure builds for different OS and CPU environments, providing flexibility depending on the specific requirements of your application.

## Acknowledgement

The `@flownet/lib-v8-build` library utilizes the `@fnet/list-files` package for managing file operations during the build process. This acknowledgement ensures compliance with any external contributions or dependencies integrated into the library.



# Input Schema
```yaml
$schema: https://json-schema.org/draft/2020-12/schema
type: object
properties:
  interactive:
    type: boolean
    description: Flag to determine if an interactive shell should be started.
    default: false
  targetOs:
    type: string
    description: The target operating system for the build.
    enum:
      - ios
      - macos
  targetCpu:
    type: string
    description: The target CPU architecture.
    enum:
      - x64
      - arm64
  targetEnv:
    type: string
    description: The target environment for the build.
    enum:
      - simulator
      - device
required:
  - targetOs
  - targetCpu
  - targetEnv

```