What we shipped.

JavaScript compatibility layer

The runtime now matches standard JavaScript far more closely — what's supported behaves exactly like JS, what's removed fails at compile time with a clear message.

• + Operators: === !== ?: % += -= *= /= ++ --
• + Full Math, real Date / new Date(), Object/Number/String globals
• + Complete String & Array methods, Unicode-correct (indices count characters)
• + Lexical closures at any nesting depth

Bounded-by-design, enforced at compile time

Removed constructs that endanger shared infrastructure — while, try/catch, switch, class — now produce a friendly compile error pointing to the right alternative, instead of silent or undefined behaviour.

Reproducible performance suite

Added a Go benchmark suite so every published number can be verified. Measured on a single 8-core node:

undefined & void support

Bundled code that compiled undefined down to void 0 previously failed to parse. Both are now first-class — undefined is an alias for null and void evaluates and discards its operand.