[Snyk] Security upgrade eslint from 8.11.0 to 9.0.0

[earthiverse]

Snyk has created this PR to fix 1 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json
• package-lock.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Prototype Pollution SNYK-JS-JSYAML-13961110	631

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Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Prototype Pollution

[gemini-code-assist]

Summary of Changes

Hello @earthiverse, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request, automatically generated by Snyk, aims to enhance the project's security posture by upgrading the eslint dependency to its latest major version, 9.0.0. This critical update resolves a 'Prototype Pollution' vulnerability and involves a comprehensive refresh of the dependency tree, ensuring the project benefits from the latest security patches and features within the ESLint ecosystem.

Highlights

• Security Upgrade: Updates the eslint dependency from version 8.11.0 to 9.0.0 to address a 'Prototype Pollution' vulnerability (SNYK-JS-JSYAML-13961110) with a score of 631.
• Major Version Bump: This is a major version upgrade for eslint, which may introduce breaking changes and updated Node.js engine requirements for various related packages within the dependency tree.
• Transitive Dependency Updates: The eslint upgrade necessitated a comprehensive refresh of numerous transitive dependencies, including @eslint/eslintrc, acorn, espree, globals, and the addition of new packages like @eslint-community/eslint-utils and @eslint/js.

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[gemini-code-assist]

Code Review

This PR upgrades ESLint to v9 to fix a security vulnerability. This is a major version upgrade with significant breaking changes. I've identified two critical issues that must be addressed for your project to continue working: the required Node.js version has been increased, and the @typescript-eslint packages are now incompatible and must be upgraded. I've provided suggestions to resolve these. Please review the changes and my comments carefully before merging.

[gemini-code-assist]

Upgrading ESLint to v9 is a major change with several breaking changes and important considerations:

1. @typescript-eslint Incompatibility (Critical): The current versions of @typescript-eslint/eslint-plugin (line 34) and @typescript-eslint/parser (line 35) are not compatible with ESLint v9. They must be upgraded to v7.x or newer. Without this, linting TypeScript files will fail. You'll need to update your package.json like this:

     "@typescript-eslint/eslint-plugin": "^7.0.0",
     "@typescript-eslint/parser": "^7.0.0",

2. Node.js Version Requirement (Critical): ESLint v9 and its dependencies require Node.js ^18.18.0, ^20.9.0, or >=21.1.0. Your development and CI/CD environments must be updated to a compatible Node.js version to prevent build failures. I recommend adding an engines field to your package.json to document this requirement:

   "engines": {
     "node": ">=18.18.0"
   }

3. Configuration & Rule Changes (Medium): ESLint v9 is transitioning to a new "flat config" system (eslint.config.js). While your existing .eslintrc file should still work, some rules have been removed from the core or changed. A thorough test of your linting setup is advisable after this upgrade.

4. Deprecated Dependencies (Medium): This upgrade pulls in newer versions of @humanwhocodes/config-array and @humanwhocodes/object-schema, which are now marked as deprecated. Consider planning a migration to their replacements (@eslint/config-array and @eslint/object-schema) in a future update.