[Snyk] Fix for 1 vulnerabilities

[rvu-snyk]

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

Snyk changed the following file(s):

• packages/koa-prometheus/package.json
• packages/koa-prometheus/package-lock.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Inefficient Algorithmic Complexity SNYK-JS-BRACEEXPANSION-17706650	721

Breaking Change Risk

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[rvu-snyk]

This update includes major version upgrades for both @babel/cli and eslint, introducing significant breaking changes that require developer action.

@babel/cli@7.28.6 → @babel/cli@8.0.0

Risk: HIGH

Babel 8 modernizes its core but requires configuration updates. The most impactful changes are:

• Default Target Changed: Babel no longer compiles to ES5 by default. It now targets modern browsers based on Browserslist's defaults query (roughly ES2023). If you need to support older environments, you must explicitly define your targets.
• ESM-Only Package: Babel's internal packages are now ESM-only. This primarily affects tooling and plugin authors but is a core architectural change.
• Node.js Requirement: Requires a modern version of Node.js (e.g., Node.js 22+).
• Configuration Changes:
  • The loose and spec options in @babel/preset-env are deprecated in favor of the assumptions option.
  • Polyfill injection via useBuiltIns in @babel/preset-env has been removed and extracted into a separate package, babel-plugin-polyfill-corejs3.
  • The default runtime for @babel/preset-react is now "automatic" instead of "classic".

Recommendation: Review your .babelrc or babel.config.js. Explicitly set the targets option if you support older browsers. Migrate from loose/spec to assumptions and update your polyfill strategy if needed.

Source: Babel 8 Migration Guide, Babel 8 Release Post

eslint@9.39.4 → eslint@10.0.0

Risk: HIGH

ESLint 10 completes the transition to the "flat config" system, making it mandatory.

• eslintrc Removed: The legacy configuration format (.eslintrc.js, .eslintrc.json) is no longer supported. All projects must migrate to a eslint.config.js file.
• Node.js Requirement: Support for Node.js versions older than 20.19.0 has been dropped.
• New Config Lookup: The engine now finds eslint.config.js by searching up from each linted file's directory, improving behavior in monorepos.
• eslint:recommended Updated: The recommended ruleset has been updated, which may cause new linting errors to appear after upgrading.

Recommendation: Use the official migration script (npx @eslint/migrate-config) to convert your existing .eslintrc file to the new eslint.config.js format. Update your Node.js version if it is below v20.19.0.

Source: ESLint v10 Migration Guide

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