Byte to Byte — Source-to-Source Transpiler

A compiler-design project that transpiles code between 10 programming languages using a full parse → analyze → optimize → emit pipeline.

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Live Demos

Interface	Link
Web App (full editor UI)	xrenes.github.io/Byte-to-Byte
Terminal Preview (interactive TUI in browser)	xrenes.github.io/Byte-to-Byte/terminal.html

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Supported Languages

Python · JavaScript · TypeScript · Java · C · C++ · C# · Go · Rust · Ruby

90+ source → target pairs

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How It Works

Source Code  →  parse()  →  analyze()  →  optimize()  →  emit()  →  Output

1. Parser — tokenizes source into typed AST nodes
2. Analyzer — builds symbol table, resolves scopes, infers types
3. Optimizer — constant folding, dead code elimination
4. Emitter — generates idiomatic target-language code

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Project Structure

File	Purpose
parser.js	Core compiler engine (~1800 lines, zero dependencies)
index.html	Landing page with particle animation
app.html	Main two-panel web editor UI
terminal.html	Browser-based interactive terminal emulator
transpiler.js	Web UI wiring (12-pass regex pipeline)
b2b.js	CLI tool (--from, --to, --out flags)
b2b-app.js	Node.js ANSI terminal TUI
style.css	Dark green theme, CSS variables
test_semantic.js	36 automated semantic analysis tests

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Run Locally

# Web UI — open in browser directly (no server needed)
start index.html

# CLI tool
node b2b.js --from python --to java input.py

# Interactive terminal TUI
node b2b-app.js

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Compiler Design project — built with pure JavaScript, zero runtime dependencies.