Serez Code

Getting Started

Install Serez Code, write your first script, and get comfortable with the tools. Current version: v3.5.2

Installation

Windows

Download from GitHub Releases:

sz-windows-x64-setup.msi — installer, adds sz to your PATH automatically.
sz-windows-x64.exe — portable binary, no installation needed.

macOS

sz-macos-arm64 — Apple Silicon (M1/M2/M3)
sz-macos-x64 — Intel

chmod +x sz-macos-arm64
mv sz-macos-arm64 /usr/local/bin/sz

Linux

sz-linux-x64 — x64 static binary

chmod +x sz-linux-x64
mv sz-linux-x64 /usr/local/bin/sz

From source

Requires Rust stable:

git clone https://github.com/Sergio3215/serez-code
cd serez-code
cargo build --release

Verify

sz --version

All assets for v3.5.2 on GitHub →

Your first script

Create a file called hello.sz:

let name = "Serez"
out "Hello from {name}!"

let nums = [1, 2, 3, 4, 5]
let sum = nums.reduce(0, (acc, x) => acc + x)
out "Sum: {sum}"   // → Sum: 15

Run it:

sz hello.sz

Note: Use out to print values. Expressions are not auto-printed when running a file — only in the REPL.

The REPL

Run sz with no arguments. Results are printed automatically:

sz
>> let x = 10
>> x * 3
30
>> "hello".toUpperCase()
HELLO

CLI commands

Command	What it does
`sz script.sz`	Run a script file
`sz`	Start the interactive REPL
`sz --watch script.sz`	Re-run automatically on every save
`sz --check script.sz`	Analyze estimated memory usage without running
`sz --version`	Print the installed version
`sz install <name>`	Install a package into ./packages/
`sz uninstall <name>`	Remove an installed package

Watch mode

sz --watch main.sz

Memory check mode

sz --check script.sz

Function 'fibonacci': ~312 estimated bytes
  Criticality: ██  🟢 < 1KB (Safe)

Function 'processData': ~11840 estimated bytes
  Criticality: ██████████  🔴 > 10KB (Critical)