@coze-studio/bot-env-adapter

Environment configuration adapter for bot applications with multi-region support

Project Overview

The @coze-studio/bot-env-adapter package provides a centralized environment configuration management system for bot applications. It consolidates environment variables, feature flags, and business configurations into a type-safe, region-aware adapter that supports different deployment environments (CN, SG, VA) and build types (local, online, offline, test).

This package was originally extracted from apps/bot/env to provide reusable environment configuration management across the bot ecosystem.

Features

• Multi-Region Support: Configures environments for China (CN), Singapore (SG), and Virginia (VA) regions
• Environment-Aware Configuration: Automatically selects appropriate configurations based on build type and region
• Type Safety: Auto-generated TypeScript definitions ensure type safety across the application
• Feature Flags: Centralized feature flag management for different environments and regions
• Business Configuration: Environment-specific business settings and API configurations
• Build-Time Validation: Validates required environment variables at build time

Get Started

Installation

Install the package in your workspace:

# Add to your package.json dependencies
"@coze-studio/bot-env-adapter": "workspace:*"

# Run rush update to install
rush update

Basic Usage

import { GLOBAL_ENVS } from '@coze-studio/bot-env-adapter';

// Access environment variables
console.log(GLOBAL_ENVS.REGION); // 'cn' | 'sg' | 'va'
console.log(GLOBAL_ENVS.BUILD_TYPE); // 'local' | 'online' | 'offline' | 'test'
console.log(GLOBAL_ENVS.BOT_BRAND_NAME); // Region-specific brand name

// Access feature flags
if (GLOBAL_ENVS.FEATURE_ENABLE_SSO) {
  // Enable SSO functionality
}

// Access business configurations
const appId = GLOBAL_ENVS.APP_ID;
const cdnUrl = GLOBAL_ENVS.CDN;

Runtime Environment

import { runtimeEnv } from '@coze-studio/bot-env-adapter/runtime';

// Access runtime environment information
console.log(runtimeEnv.isPPE); // Production environment check

Type Definitions

import type { TConfigEnv } from '@coze-studio/bot-env-adapter/typings';

// Use predefined types for configuration
const myConfig: TConfigEnv<string> = {
  cn: {
    boe: 'boe-value',
    inhouse: 'inhouse-value',
    release: 'release-value',
  },
  sg: {
    inhouse: 'sg-inhouse-value',
    release: 'sg-release-value',
  },
  va: {
    release: 'va-release-value',
  },
};

API Reference

Core Exports

GLOBAL_ENVS

The main export containing all environment variables, feature flags, and configurations.

import { GLOBAL_ENVS } from '@coze-studio/bot-env-adapter';

// Base environment variables
GLOBAL_ENVS.BUILD_TYPE    // Build environment type
GLOBAL_ENVS.REGION        // Deployment region
GLOBAL_ENVS.NODE_ENV      // Node environment
GLOBAL_ENVS.CDN           // CDN URL for current environment

// Feature flags
GLOBAL_ENVS.FEATURE_ENABLE_SSO           // SSO feature toggle
GLOBAL_ENVS.FEATURE_ENABLE_APP_GUIDE     // App guide feature
GLOBAL_ENVS.FEATURE_GOOGLE_LOGIN         // Google login support

// Business configurations
GLOBAL_ENVS.APP_ID                       // Application ID
GLOBAL_ENVS.BOT_BRAND_NAME              // Brand name for current region
GLOBAL_ENVS.GOOGLE_CLIENT_ID            // Google OAuth client ID

extractEnvValue<T>(config: TConfigEnv<T>): T

Utility function to extract environment-specific values based on current region and build type.

import { extractEnvValue } from '@coze-studio/bot-env-adapter';

const apiUrl = extractEnvValue<string>({
  cn: {
    boe: 'https://api-boe.example.cn',
    inhouse: 'https://api-inhouse.example.cn',
    release: 'https://api.example.cn',
  },
  sg: {
    inhouse: 'https://api-inhouse.example.com',
    release: 'https://api.example.com',
  },
  va: {
    release: 'https://api-va.example.com',
  },
});

Configuration Structure

Base Configuration (base.ts)

Contains fundamental environment variables and regional judgments:

• Build type and version information
• Regional flags (IS_OVERSEA, IS_CN_REGION, etc.)
• CDN configurations
• Development mode flags

Feature Flags (features.ts)

Boolean flags controlling feature availability:

• Authentication features (SSO, Google login, etc.)
• Regional feature differences
• Version-specific feature toggles

Business Configurations (configs.ts)

Environment-specific business settings:

• API keys and application IDs
• External service configurations
• Legal document URLs
• Platform-specific settings

Type Definitions

The package automatically generates TypeScript definitions in src/typings.d.ts based on the environment configuration. These types are available for import:

// Auto-generated types based on actual configuration
declare const BUILD_TYPE: 'local' | 'online' | 'offline' | 'test';
declare const REGION: 'cn' | 'sg' | 'va';
declare const FEATURE_ENABLE_SSO: boolean;
// ... and many more

Development

Project Structure

src/
├── index.ts           # Main entry point, exports GLOBAL_ENVS
├── base.ts            # Base environment variables and regional flags
├── features.ts        # Feature flag configurations
├── configs.ts         # Business-specific configurations
├── typings.d.ts       # Auto-generated type definitions
├── runtime/
│   └── index.ts       # Runtime environment utilities
├── utils/
│   ├── config-helper.ts    # Configuration extraction utilities
│   └── current-branch.ts   # Git branch detection
└── configs/
    └── volcano.ts     # Volcano platform configurations

Configuration Guidelines

When adding new environment configurations, follow these conventions:

1. Use extractEnvValue for environment-specific values:

const MY_CONFIG = extractEnvValue<string>({
  cn: {
    boe: 'boe-value',
    inhouse: 'inhouse-value',
    release: 'release-value',
  },
  sg: {
    inhouse: 'sg-inhouse-value',
    release: 'sg-release-value',
  },
  va: {
    release: 'va-release-value',
  },
});

2. Ensure all environments are covered to prevent configuration gaps
3. Update the envs object in src/index.ts to include new configurations
4. Run the build script to regenerate type definitions

Build Process

The package includes an automated TypeScript definition generator:

npm run build

This command:

1. Analyzes the envs object in src/index.ts
2. Generates type definitions in src/typings.d.ts
3. Compiles TypeScript files

Environment Variables

Set these environment variables to control the adapter behavior:

• BUILD_TYPE: Build environment ('local' | 'online' | 'offline' | 'test')
• REGION: Deployment region ('cn' | 'sg' | 'va')
• CUSTOM_VERSION: Version type ('inhouse' | 'release')
• NODE_ENV: Node environment ('development' | 'production' | 'test')
• VERBOSE: Set to 'true' to log all environment values

Testing

npm run test        # Run tests
npm run test:cov    # Run tests with coverage
npm run lint        # Run linting

Dependencies

Runtime Dependencies

This package has no runtime dependencies, making it lightweight and suitable for both client and server environments.

Development Dependencies

• @coze-arch/eslint-config: Workspace ESLint configuration
• @coze-arch/ts-config: Workspace TypeScript configuration
• @coze-arch/vitest-config: Workspace Vitest configuration
• ts-morph: TypeScript AST manipulation for type generation
• sucrase: Fast TypeScript compiler for build scripts

License

Apache-2.0