[Snyk] Security upgrade react-scripts from 1.1.4 to 2.0.3

[snyk-io]

Snyk has created this PR to fix 2 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• demo/package.json
• demo/package-lock.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Prototype Pollution SNYK-JS-BROWSERSLIST-18854715	721
	Allocation of Resources Without Limits or Throttling SNYK-JS-BROWSERSLIST-18856271	721

Breaking Change Risk

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🦉 Prototype Pollution
🦉 Allocation of Resources Without Limits or Throttling

[snyk-io]

This is a major version upgrade from v1 to v2 which introduces significant breaking changes and new features. Developer action is required to ensure compatibility.

Key Breaking Changes:

• Node.js Version: Support for Node.js 6 has been dropped. You must use Node.js 8 or a later version. [2, 4]
• Proxy Configuration: The proxy object in package.json is no longer supported. You must migrate to the new file-based src/setupProxy.js configuration if you use a development proxy. [1, 2, 6]
• Browser Support: Polyfills for older browsers like Internet Explorer 9-11 are no longer included by default. To maintain support, you must now make it opt-in. [2, 4, 5]
• Code Splitting: The non-standard require.ensure() is disabled. You should use the import() syntax for code splitting. [2, 3, 5]
• File Extensions: Support for the .mjs file extension has been removed. [1, 2, 6]

Other Notable Changes:

• The underlying tools have been updated to Babel 7, webpack 4, and Jest 23. [2, 6]
• Native support for Sass (.scss/.sass) and CSS Modules has been added. [3]

Recommendation: Before merging, carefully review the official migration guide and your project's configuration. Pay special attention to the proxy setup, browser support needs, and any usage of require.ensure() or .mjs files.

Notice 🤖: This content was augmented using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.

[snyk-io]

⛔ Snyk checks have failed. 11 issues have been found so far.

Status	Scan Engine	Critical	High	Medium	Low	Total (11)
⛔	Open Source Security	0	5	5	1	11 issues
✅	Licenses	0	0	0	0	0 issues

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[Copilot]

Pull request overview

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Copilot could not run the full agentic suite for this review because it was automatically requested on a bot-authored pull request. Request a review from Copilot under Reviewers to retry with the full agentic suite. Improved support for bot-authored pull requests is coming soon.

Updates the demo app’s Create React App build tooling by bumping react-scripts to a newer major version.

Changes:

• Bumped react-scripts from 1.1.4 to 2.0.3

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