Fix missing-tool JavaScript JSON parsing to handle agent-output.json schema correctly

[Copilot]

Problem

The missing_tool.cjs file was incorrectly handling the agent output JSON, causing a runtime error when processing missing-tool reports:

Agent output length: 4306
Maximum reports allowed: 5
Parsed agent output with undefined entries
Error: Error processing missing-tool reports: TypeError: parsedData is not iterable

Root Cause

The missing-tool JavaScript was parsing agent output as a direct JSON array:

const parsedData = JSON.parse(agentOutput);
// Then trying to iterate: for (const entry of parsedData)

However, according to the agent-output.json schema, the agent output should be structured as:

{
  "items": [...],
  "errors": [...]
}

All other .cjs files in the codebase (like create_issue.cjs, create_security_report.cjs, etc.) correctly handle this schema format, but missing_tool.cjs was expecting a raw array format.

Solution

Updated missing_tool.cjs to parse the agent output according to the correct schema:

// Parse the validated output JSON
let validatedOutput;
try {
  validatedOutput = JSON.parse(agentOutput);
} catch (error) {
  core.error(`Error parsing agent output JSON: ${error.message}`);
  return;
}

if (!validatedOutput.items || !Array.isArray(validatedOutput.items)) {
  core.info("No valid items found in agent output");
  return;
}

// Process all parsed entries
for (const entry of validatedOutput.items) {
  // ... existing processing logic
}

Testing

• Updated all test cases in missing_tool.test.cjs to provide data in the correct schema format
• Added new test case for empty items array scenario
• All 10 missing-tool tests pass ✅
• All 268 JavaScript tests pass ✅
• All 78 Go tests pass ✅
• Manual verification confirms the fix resolves the "parsedData is not iterable" error

The fix is minimal and surgical - only changing the JSON parsing logic while preserving all existing functionality and maintaining consistency with the rest of the codebase.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• api.contoso.com
  • Triggering command: /tmp/go-build490189584/b278/cli.test -test.testlogfile=/tmp/go-build490189584/b278/testlog.txt -test.paniconexit0 -test.timeout=10m0s -test.v=true (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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