Design Principles

Main principles:

Performance
Simple syntax - as minimal as possible
Simple but robust toolbox

Based on Fennel:

No early returns

Based on F#:

Functional first
Indentation based
File ordering
Units of measure

Based on V:

No null
No global variables
No undefined values
No undefined behavior
No variable shadowing
Bounds checking
Immutable variables by default
Pure functions by default
Immutable structs by default
Option/Result and mandatory error checks
Sum types
Generics

Based on Zig:

No hidden control flow
No hidden memory allocations
No preprocessor, no macros ???

New features:

Custom keywords
Any chars can be used (usefull for Math and Science)

CLI Commands

Any CLI command can be called on any folder.

light or light help <topic> - help about CLI commands
light init or light init <templace-name> - initialize a default project or based on a template
light install - install packages (including packages from the host language)
light run - execute current project
light watch - watch changes on the code
light test - executes tests and shows coverage
light deps - shows dependency information (inclusing packages from the host language)
light fmt - format code
light bug - starts a bug report
light doc - shows documentation for the current project or package
light version - shows version