Validation Protocol: Cross-Field, Async, and Conditional validation

[Copilot]

Implements comprehensive validation protocol enhancements: cross-field validation for multi-field business rules, async validation for remote checks, and conditional validation for context-aware rules.

Changes

Cross-Field Validation (17 tests)

• Date range validation (end_date > start_date)
• Amount comparisons with multiple fields
• Complex expressions with AND/OR operators
• Documented with Salesforce validation rule equivalents

{
  type: 'cross_field',
  name: 'discount_limit',
  condition: 'discount > (amount * 0.40)',
  fields: ['discount', 'amount'],
  message: 'Discount cannot exceed 40% of the amount'
}

Async Validation (14 tests)

• Remote uniqueness checks via API endpoints
• Timeout and debounce configuration
• Seven documented use cases: email/username uniqueness, tax ID validation, credit card verification, address validation, domain availability, coupon validation

{
  type: 'async',
  name: 'unique_email',
  field: 'email',
  validatorUrl: '/api/users/check-email',
  debounce: 500,
  timeout: 3000
}

Conditional Validation (14 tests)

• "Validate only if X" patterns with when/then/otherwise
• Nested conditionals for complex business logic
• Role-based and region-specific validation

{
  type: 'conditional',
  when: 'order_total > 10000',
  then: {
    type: 'script',
    name: 'manager_approval_required',
    condition: 'manager_approval_id = null'
  }
}

Documentation

• Module-level docs comparing ObjectStack to Salesforce patterns
• Inline examples for each validation type
• Best practices for async validation (timeouts, debouncing, caching)

Original prompt

Week 3: Validation Protocol Enhancement

Day 1-2: Cross-Field Validation

Define CrossFieldValidationSchema in validation.zod.ts
Support expressions like "end_date > start_date"
Write 15+ tests
Document with Salesforce validation rule examples
Day 3-4: Async Validation

Define AsyncValidationSchema in validation.zod.ts
Support remote uniqueness checks via API
Write 10+ tests with mock endpoints
Document use cases (email uniqueness, username availability)
Day 5: Conditional Validation

Add condition field to ValidationSchema
Support "validate only if X is true" patterns
Write 10+ tests

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Review	Updated (UTC)
spec	Error		Jan 21, 2026 1:52pm