SKILL.md
Lea Language
Quick Start
let numbers = [1, 2, 3, 4, 5]
let result = numbers
/> filter((x) -> x > 2)
/> map((x) -> x * x)
/> reduce(0, (acc, x) -> acc + x)
result /> print
Core Principles
- Pipes:
value /> fn passes value as first arg; use input placeholder to control position
- Functions:
let double = (x) -> x * 2 (no fn keyword)
- Multi-statement bodies: Indentation-based or brace-delimited
{ }
- Decorators: Trailing
#log #memo #time #retry(3) etc. after function body
- Bindings:
let x = 10 immutable, maybe x = 0 mutable
- Records:
{ name: "Max", age: 99 } with member access record.field
- Contexts:
context Name = default + provide Name value + @Name attachments
Builtins
- Math:
sqrt, abs, floor, ceil, round, min, max
- Lists:
length, head, tail, push, concat, map, filter, reduce, range
- IO:
print (returns first arg for chaining)
- Async:
delay(ms) — promise that resolves after ms
Running
npm run repl # Interactive REPL
npm run lea file.lea # Run a file
Reference Files
- [references/syntax.md](references/syntax.md) - Full syntax reference
- [references/architecture.md](references/architecture.md) - Interpreter internals
