demo-interpreter

Introduction

A demo JavaScript interpreter.

Features

Only Support Features Below

• let - only Identifier
• const - only Identifier
• function (function declaration treated as const declaration, params only support Identifier)
• if / else if / else
• binary expression
• assignment expression
• logic expression: && / || / ??
• condition expression: cond ? A : B
• update expression: ++ / --

Example

Can run like this:

import { run } from '../src'

run(
    `
        function fib(n) {
            if (n < 2) return n 

            return fib(n - 1) + fib(n - 2)
        }

        fib(10)
    `
) // => 55

Tests

Run yarn test.