security: upgrade build toolchain dependencies#7739
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Upgrade build tools and remove vulnerable packages to address multiple security vulnerabilities in the build pipeline. Changes: - package.json: * @babel/preset-env: ^7.29.0 → ^7.29.5 * babel-plugin-istanbul: ^6 → ^8.0.0 * Remove babel-plugin-transform-builtin-extend * webpack-dev-server: ^5.2.3 → ^5.2.4 * webpack-manifest-plugin: ^6.0.1 → ^5.0.1 * Remove request-cookies package * Add core-js: ^2.6.12 (explicit devDependency) - client/.babelrc: Remove babel-plugin-transform-builtin-extend config - viz-lib/package.json: Split build:babel into build:babel and build:babel:with-types; update build script - webpack.config.js: Update LessPluginAutoPrefix to use browserslist - viz-lib/webpack.config.js: Update LessPluginAutoPrefix to use browserslist - Regenerate pnpm-lock.yaml CVEs Addressed: - CVE-2025-30359, CVE-2026-6402: webpack-dev-server vulnerabilities - CVE-2026-44728: @babel/plugin-transform-modules-systemjs (via preset-env) - CVE-2023-45133: babel-traverse chain (via babel-plugin-transform-builtin-extend removal) Code Changes: - viz-lib build script split ensures type declarations still generated when needed via build:babel:with-types - Autoprefixer 10+ compatibility: Uses browserslist from package.json instead of inline browsers array - core-js added as explicit devDependency (previously transitive) Test Results: - Frontend tests: ✓ All 15 test suites passed (90 tests) - TypeScript compilation: ✓ Type checking passed Co-authored-by: Cursor <cursoragent@cursor.com>
This was referenced Jun 2, 2026
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Summary
Upgrade build tools and remove vulnerable packages to address multiple security vulnerabilities in the build pipeline.
Changes
package.json updates
Code changes
CVEs Addressed
Technical Details
viz-lib build script change
The build script split ensures type declarations are still generated when needed:
build:babel: Fast build without type generation (for watch mode)build:babel:with-types: Full build with type declarations (for production)buildscript usesbuild:babel:with-typesto maintain type generationAutoprefixer 10+ compatibility
LessPluginAutoPrefix now uses the browserslist configuration from
package.jsoninstead of an inlinebrowsersarray, which is no longer supported in Autoprefixer 10+.core-js explicit dependency
Added as explicit devDependency (was previously transitive). Required for Babel polyfills.
Test Results
Related PRs
Part of the frontend security upgrade series split from #7720:
Made with Cursor