Introduction

Romit is a general-purpose programming language for shorter code, where the compiler fills in sensible defaults — plain statements, indentation only, no braces, brackets, or parentheses. Programs use the .rmt file extension and the romit command-line tool.

AI-assisted work today means long prompts and big generated codebases. Romit sits in between: a tiny language that reads almost like a prompt but executes. Rules, state machines, invariants, and tests are an optional spec layer when you want checks — not required for every program.

Romit’s surface syntax is brace-free: no { }, [ ], or ( ). Blocks use indentation (two spaces per level; tabs are rejected with P001).

The fastest program is a script:

say "Hello, world!"

romit run hello.rmt

For optional structured outputs and tests, start a file with spec — see Optional spec layer and examples/beginner/hello_world.rmt.

The compiler in this repository runs scripts (variables, decimals, text interpolation, lists, functions, loops), checks and tests the spec layer, and powers a browser playground. Romit UI (use ui) builds reactive SwiftUI-style apps (state, stacks, controls, navigation, tabs, sheets, saved data) and static pages:

use ui

state
  count is 0

screen Home
  text "Tapped {count} times" bold
  button "Tap me" do count += 1
    style prominent

See Building apps.

See Why Romit for motivation and a before/after prompting example.