Skip to main content

Jun 2025 (v0.9.2)

Mochi v0.9.2 delivers major VM upgrades with new builtins and optimizations alongside broader compiler support. Debugging tools and tests have also been enhanced.

Runtime​

  • Specialized numeric bytecode with CFG-based register inference
  • Dynamic map literals, membership checks and iteration
  • Builtins append, str, input, count, avg and an extended len
  • Partial application, tail call optimization and unary negation
  • Nested index assignment and list set operations
  • Error stack traces from the VM
  • Variable declarations enforced on assignment

Compilers​

  • Nested function support in the C backend
  • Exported functions in the Zig backend
  • Functions and lambdas in the PL backend
  • Scala infers function expression types

Tooling​

  • vmreport command for VM analysis
  • Interpreter golden tests run via the VM
  • Benchmarks updated without PyPy or Cython
  • Ruby lambda helpers propagate correctly