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[ienaga]

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[Copilot]

Pull request overview

This PR migrates the CLI codebase to native ESM, aligning TypeScript output and runtime behavior with modern Node.js module semantics.

Changes:

• Switch src/index.ts from CommonJS require usage to ESM import, including JSON import attributes and ESM-safe module resolution (createRequire).
• Update package.json to mark the package as ESM ("type": "module") and move type packages into devDependencies.
• Adjust tsconfig.json to include Node.js ambient types.

Reviewed changes

Copilot reviewed 2 out of 4 changed files in this pull request and generated 1 comment.

File	Description
tsconfig.json	Adds Node ambient types to improve TS type checking for Node globals/APIs.
src/index.ts	Converts module loading to ESM imports and removes require usage in favor of ESM-compatible patterns.
package.json	Declares ESM package type and reorganizes @types/* dependencies under devDependencies.
package-lock.json	Mirrors dependency reclassification and adds the newly declared @types/* dev dependencies.

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[Copilot]

createRequire is being called with a path built via string concatenation (${root}/package.json). Since root comes from path.resolve() and may contain platform-specific separators (notably on Windows), using path.join(root, "package.json") (or a file URL via pathToFileURL) would make this more robust and consistent with the other path handling in this function.

Suggested change

	const requireFromRoot = createRequire(`${root}/package.json`);
	const requireFromRoot = createRequire(path.join(root, "package.json"));