Changelog

v0.0.3.1 2025-11-25

Bug Fixes

• Fixed support negative numbers in expressions.
• Added unary minus operator support for negative numbers.

v0.0.3 — Arrays in Objects & Real-World Examples (2025-11-25)

New Features

Arrays as Object Property Values

You can now use arrays directly as object property values!

config {
  methods = ["GET", "POST", "PUT", "DELETE"]
  ports = [8080, 8081, 8082]
  tags = ["api", "v1", "production"]
}

This unlocks powerful new use cases:

• API gateway configurations with allowed methods
• Kubernetes configs with container ports
• Feature flags with target user segments
• And much more!

Arrays in Map Clauses

Map transformations can now include array properties:

routes [
  template { service }

  map (r) = {
    service = r.service
    allowMethods = ["GET", "POST", "PUT"]
    allowHeaders = ["Content-Type", "Authorization"]
  }

  "auth"
  "payment"
]

Real-World Examples

Added 6 comprehensive real-world examples demonstrating JSSON’s power:

1. Geographic Data — Generate millions of coordinate records
2. Kubernetes Configuration — Multi-environment deployments
3. API Gateway — Microservices routing with rate limiting
4. i18n Translations — Multi-language translation management
5. Feature Flags — Environment-specific configuration
6. Database Seeding — Relational data with foreign keys

Each example includes:

• Complete JSSON code
• JSON output samples
• Explanation of techniques used
• When to use the pattern

Parser Improvements

• Enhanced parseObjectLiteral to support array literals as property values
• Better error messages for syntax issues
• Improved handling of nested structures

Documentation

• New “Real-World Use Cases” section in docs
• Overview page explaining production scenarios
• Individual pages for each example with detailed explanations
• Updated SEO keywords for better discoverability

Bug Fixes

• Fixed parsing of complex nested objects with arrays
• Improved transpiler handling of mixed data structures

Performance

JSSON v0.0.3 can now handle even more complex scenarios:

• ~500 lines of JSSON → 600+ JSON records
• Ratios up to 50,000:1 for large-scale data generation

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v0.0.2 — Arithmetic & Conditional Logic (2025-11-24)

Features

• Arithmetic operators: +, -, *, /, %
• Comparison operators: ==, !=, >, <, >=, <=
• Ternary operator: condition ? true : false
• Map transformations with conditional logic
• String concatenation in expressions

Examples

users [
  template { name, age }

  map (u) = {
    name = u.name
    age = u.age
    isAdult = u.age >= 18
    category = u.age >= 18 ? "adult" : "minor"
  }

  "João", 25
  "Maria", 16
]

---

v0.0.1 — Initial Release (2025-11-23)

Features

• Core parser for JSSON syntax
• Template arrays for structured data
• Range expressions (1..100)
• Include statements for file composition
• CLI tool for transpilation
• Basic data types: strings, numbers, booleans, objects, arrays

Examples

users [
  template { name, age }

  "João", 19
  "Maria", 25
]

ports = 8080..8085

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What’s Next?

Future versions may include:

• Variable declarations
• Functions/macros
• Array methods (filter, map, reduce)
• More advanced control flow

Stay tuned!