baby-racket

A subset of Racket created entirely in Javascript without external dependencies. The goal of this project is to create a suitable substitute language for Racket's Student Languages.

Currently implemented:

• Numbers & Arithmetic
• Structs
• Vectors
• Strings
• Symbols
• Booleans
• Proper lists
• Recursion
• Lambdas
• Local definitions
• Conditional branching (cond, if)
• check-expect / check-equal?

Link to In-Browser IDE

NOTE:

• this project no longer supports the "mykanren" implementation of minikanren as of version 2.0.0
• check-expect actually functions more like check-equal? and both refer to the same function under the hood

import {prettyEvaluate, evaluate, prettify, STANDARD_ENV} from 'baby-racket';

prettyEvaluate("'((+ 1 1) (* 4 4))") // -> '(2 16)

evaluate("'((+ 1 1) (\* 4 4))") // -> [2, 16]
prettify(evaluate("'((+ 1 1) (\* 4 4))")) // -> '(2 16) : equivalent to prettyEvaluate

// custom env
let myEnv = STANDARD_ENV.clone()

... do things with myEnv ...

// with custom environment and minikanren mode on
evaluate("'((+ 1 1) (\* 4 4))" , {env: myEnv})

// if you want to evaluate an entire file instead of a single expression, use evaluateFile
// you will get an array of each expression in the file in order of appearance
evaluateFile("(+ 1 1) (+ 1 1)", {env: myEnv}) // -> [2, 2]