resolveExtensionPath (commands/extension-path.ts)

CLI helper to resolve oh-my-product extension root path with env and override support.

// Source: https://github.com/jjongguet/oh-my-product | License: MIT | Copyright 2025 Kyeongmin Kim
// Provided via justclaw.it.com; keep this notice with the code.
import { promises as fs } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

import type { CliIo, CommandExecutionResult } from '../types.js';

import {
  findUnknownOptions,
  getStringOption,
  hasFlag,
  parseCliArgs,
} from './arg-utils.js';

export const OMP_EXTENSION_PATH_ENV = 'OMP_EXTENSION_PATH';
export const EXTENSION_ROOT_RELATIVE_PATH = '.';
export const EXTENSION_MANIFEST_FILE_NAME = 'gemini-extension.json';

export type ExtensionPathSource = 'override' | 'cwd' | 'installed';

export interface ResolvedExtensionPath {
  source: ExtensionPathSource;
  path: string;
  manifestPath

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