@tabbybyte/minion/lib/config.js

A cross-runtime CLI tool for AI-powered command execution. Auto-detects and uses Bun for performance when available, falls back to Node.js.

import { config } from "dotenv"
import { resolve } from "path"
import { file } from "./runtime-compat.js"

async function loadConfig(configPath) {
  // 1. Load .env in cwd (lowest priority)
  const localEnvPath = resolve(process.cwd(), ".env")
  if (await file.exists(localEnvPath)) {
    config({ path: localEnvPath, override: true })
  }
  // 2. Load --config file (middle priority)
  if (configPath && await file.exists(configPath)) {
    config({ path: configPath, override: true })
  }
  // 3. process.env is always present (highest priority)

  const provider = process.env.MINION_PROVIDER || "openai"

  const configuration = {
    provider,
    // dryRun: false, // (Temporarily disabled)
    temperature: process.env.MINION_TEMPERATURE ? Number(process.env.MINION_TEMPERATURE) : 0.3,
    maxSteps: process.env.MINION_MAX_STEPS ? Number(process.env.MINION_MAX_STEPS) : 5,
    debug: process.env.MINION_DEBUG === "true" || process.env.MINION_DEBUG === "yes" || process.env.MINION_DEBUG === "1" || !!+process.env.DEBUG,
  }

  // Provider-specific configuration
  switch (provider.toLowerCase()) {
    case "openai":
      if (!process.env.MINION_OPENAI_API_KEY) {
        throw new Error("MINION_OPENAI_API_KEY environment variable is required for OpenAI provider")
      }
      configuration.apiKey = process.env.MINION_OPENAI_API_KEY
      configuration.model = process.env.MINION_OPENAI_MODEL || "gpt-4"
      break

    case "anthropic":
      if (!process.env.MINION_ANTHROPIC_API_KEY) {
        throw new Error("MINION_ANTHROPIC_API_KEY environment variable is required for Anthropic provider")
      }
      configuration.apiKey = process.env.MINION_ANTHROPIC_API_KEY
      configuration.model = process.env.MINION_ANTHROPIC_MODEL || "claude-3-sonnet-20240229"
      break

    case "google":
      if (!process.env.MINION_GOOGLE_API_KEY) {
        throw new Error("MINION_GOOGLE_API_KEY environment variable is required for Google provider")
      }
      configuration.apiKey = process.env.MINION_GOOGLE_API_KEY
      configuration.model = process.env.MINION_GOOGLE_MODEL || "gemini-2.0-flash-lite"
      // Set the expected env variable for the SDK
      process.env.GOOGLE_GENERATIVE_AI_API_KEY = process.env.MINION_GOOGLE_API_KEY
      break

    case "local":
      if (!process.env.MINION_LOCAL_API_URL) {
        throw new Error("MINION_LOCAL_API_URL environment variable is required for local provider")
      }
      configuration.baseURL = process.env.MINION_LOCAL_API_URL
      configuration.apiKey = process.env.MINION_LOCAL_API_KEY || "local"
      configuration.model = process.env.MINION_LOCAL_MODEL || "llama2"
      break

    default:
      throw new Error(`Unsupported provider: ${provider}. Supported providers: openai, anthropic, google, local`)
  }

  return configuration
}

// Exports
export { loadConfig }