Upgrade eslint to v10

[Copilot]

Upgrade ESLint from v9 to v10 and update related packages for compatibility.

• Dependencies (package.json):

  • eslint ^9.37.0 → ^10.0.0
  • @eslint/js ^9.37.0 → ^10.0.0
  • typescript-eslint ^8.46.0 → ^8.56.0
  • Added globals ^17.3.0 — previously transitive via @eslint/eslintrc, which v10 removes

• Engine requirement (package.json): Bumped engines.node from >=20.0.0 to >=20.19.0 to align with ESLint v10's minimum Node.js version (^20.19.0 || ^22.13.0 || >=24).

• Lint fix (src/readme.ts): Fixed no-useless-assignment error (new in eslint:recommended v10) by collapsing a redundant let + if/else into a ternary:

// before
let filteredTags = normalTags
if (versionType === 'preview') {
  filteredTags = normalTags.filter((t) => t.includes('preview'))
} else {
  filteredTags = normalTags.filter((t) => !t.includes('preview'))
}

// after
const filteredTags =
  versionType === 'preview'
    ? normalTags.filter((t) => t.includes('preview'))
    : normalTags.filter((t) => !t.includes('preview'))

No changes to eslint.config.js — the existing flat config is already v10-compatible.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>upgrade eslint to v10</issue_title>
<issue_description>- [ ] upgrade eslint to v10

• upgrade related packages to latest versions to ensure compat
• fix or suppress any code errors
  </issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes upgrade eslint to v10 #270

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[Copilot]

Pull request overview

Upgrades the repository’s linting toolchain to ESLint v10 and updates related dependencies/lockfile entries to keep the existing flat ESLint config working, plus a small TypeScript refactor to satisfy a newly-enabled recommended rule.

Changes:

• Bumped eslint / @eslint/js to v10 and updated typescript-eslint; added globals as a direct devDependency.
• Updated package-lock.json to reflect the new dependency graph after the ESLint v10 upgrade.
• Refactored getLatestTag in src/readme.ts to avoid no-useless-assignment under ESLint v10.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/readme.ts	Refactors tag filtering logic to satisfy ESLint v10 recommended rules.
package.json	Updates devDependencies for ESLint v10 + related tooling; adds globals.
package-lock.json	Lockfile refresh for the upgraded lint/tooling dependency tree.

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