virdo

Virtually run JS scripts

What?

What this is:

• An actual, honest to God, JS sandbox.

What this is not:

• eval
• A subprocess running node with low priviliges.
• A find-and-replace blackbox.
• An actual, honest to God, JS sandbox with 100% language spec compliance.
  • Some minor features are not supported yet (such as classes and this).

Usage

const js = require('virdo');
console.log(
  js(`
  let a = 4;
  if (false) {
    a++;
  }
  a;
`)
); // this prints out 4
 
js(`print(4)`, { print: console.log }); // prints 4