Feat/asset

[nafiuishaaq]

📁 Implementation Summary

Files Created:

1. trustline-validator.ts - Main validator implementation
2. index.ts - Exports for the stellar trustline module
3. trustline-validator.spec.ts - Comprehensive test suite
4. index.ts - Parent index for trustlines module
5. index.ts - Root assets module exports

✅ Key Features Implemented

1. Trustline Detection

• ✓ Detects missing trustlines for required assets
• ✓ Identifies insufficient trustline limits
• ✓ Validates Stellar account IDs using stellar-sdk
• ✓ Handles native XLM asset specially (always available)

2. Corrective Actions

The validator suggests actionable remediation steps:

• Establish: Create new trustlines for missing assets
• Modify-limit: Increase limits on existing trustlines
• Includes descriptions and required XLM fees (50 stroops)

3. Comprehensive Result Structure

TrustlineValidationResult {
  accountId: string;
  isValid: boolean;
  requiredAssets: StellarAsset[];
  existingTrustlines: Trustline[];
  missingTrustlines: StellarAsset[];
  insufficientLimits: [...];
  errors: TrustlineError[];
  suggestedActions: TrustlineAction[];
}

4. Configuration Management

• ✓ Dynamic required asset registration
• ✓ Minimum limit thresholds per asset
• ✓ Add/remove assets at runtime
• ✓ Set custom minimum limits

5. Error Reporting

• ✓ Missing trustlines (error severity)
• ✓ Insufficient limits (warning severity)
• ✓ Invalid account IDs (error severity)
• ✓ Structured error codes for programmatic handling

🎯 Acceptance Criteria Met

Requirement	Status	Details
Detect missing trustlines	✅	Identifies assets without trustlines
Suggest corrective actions	✅	Provides establish/modify-limit actions with descriptions
Trustline validator implemented	✅	TrustlineValidator class with full functionality
Located in correct path	✅	stellar

📊 Test Coverage

The spec file includes 20+ test cases covering:

• ✓ Missing trustline detection
• ✓ Sufficient/insufficient limit checks
• ✓ Suggested action generation
• ✓ Account ID validation
• ✓ Configuration management
• ✓ Multiple asset handling
• ✓ Error severity levels
• ✓ Result structure validation

You can now use this validator in your application like:

const validator = new TrustlineValidator({
  requiredAssets: [{ code: 'USDC', issuer: '...' }],
  minimumLimits: new Map([['USDC', '50000']])
});

const result = validator.validate(accountId, existingTrustlines);
if (!result.isValid) {
  console.log('Missing trustlines:', result.missingTrustlines);
  console.log('Suggested actions:', result.suggestedActions);
}

Made changes.

Closes #341

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