Update vulnerable packages and fix mocha version compatibility

[tarunramsinghani]

Context

This PR addresses security vulnerabilities identified through npm audit and improves the testing infrastructure compatibility. GitHub has detected 430 vulnerabilities on the default branch (57 critical, 31 high, 103 moderate, 239 low) that need immediate attention.

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Task Name

Infrastructure updates - affects all tasks that depend on mocha testing framework

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Description

• Updated mocha from 6.2.3 to 11.7.2 to address multiple security vulnerabilities
• Updated minimatch from 3.0.2 to 3.1.2 to fix security issues
• Reorganized dependencies by moving agent-base from dependencies to devDependencies for proper separation
• Updated make.js to support new mocha version 11.7.2 for test execution compatibility
• Added npm audit scripts for easier vulnerability management in package.json
• Verified all tests passing with updated dependencies (42/42 tests passing for DotNetCoreCLIV2)

Additional Recommendation: CI/CD pipelines should be updated to use npm ci instead of npm install for more reliable, faster, and secure builds in production environments.

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Risk Assessment (Medium)

Medium risk - While these are dependency updates that could potentially affect test execution across all tasks, the changes have been validated with successful test runs. The mocha version update is significant but necessary for security. The risk is mitigated by:

• Successful test validation on DotNetCoreCLIV2 task
• Backward compatibility maintained in test structure
• Only affecting development/testing infrastructure, not runtime task behavior

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Change Behind Feature Flag (No)

These are infrastructure and security updates that cannot be behind a feature flag. The vulnerabilities need immediate remediation, and the testing framework updates are essential for maintaining a secure development environment.

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Tech Design / Approach

• Dependency Analysis: Reviewed npm audit output to identify critical vulnerabilities
• Version Compatibility: Selected mocha 11.7.2 as it maintains API compatibility while fixing security issues
• Testing Strategy: Updated make.js ensureTool() calls to expect new mocha version
• Validation Approach: Ran comprehensive L0 test suite to ensure compatibility
• Incremental Updates: Updated related packages (minimatch) that had known vulnerabilities

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Documentation Changes Required (Yes)

• CI/CD pipeline documentation should be updated to recommend npm ci over npm install
• Build scripts and automation should be reviewed to use npm ci for deterministic installs
• Developer setup guides may need updates for new dependency versions

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Unit Tests Added or Updated (No)

No new unit tests were added as this is an infrastructure update. However, all existing tests continue to pass with the updated dependencies, confirming compatibility.

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Additional Testing Performed

• ✅ L0 Test Suite: All 42 unit tests for DotNetCoreCLIV2 passing
• ✅ Build Validation: Successful task build with new dependencies
• ✅ Code Coverage: Maintained 72.38% statement coverage, 61.86% branch coverage
• ✅ Common Tests: All 8 general validation tests passing
• ✅ Dependency Audit: Verified npm audit shows reduced vulnerability count
• 🔄 Recommended: Full regression testing across multiple tasks before merge

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Logging Added/Updated (No)

No additional logging required for this infrastructure update. Existing test output and build logs provide sufficient visibility into the changes.

[tarunramsinghani]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[merlynomsft]

I think the require should be at the top of the file so we throw early if the pre-req not installed; at least not in the (catch) block which will lead to misleading errors.

[merlynomsft]

catch should just wrap this one line needed for control-flow.

if we never expect it to throw due to the regex validation above, then better to not have a try->catch at all