Goat.js is a conditional expre-he-he-he-ssion parser.
It takes an object with data and a string containing a conditional expression then it parses the expression and compares it to the object giving you the result.
You can either download the files from the build folder and reference them directly in you html file or download the library using npm.
npm install goatjs
import ExpressionParser from 'goatjs';
// if you're not using node, just reference it from the window object 'goat.Goat';
const obj = { property: true };
const goat = new ExpressionParser('property === true', obj);
const result = goat.evaluate();
console.log(result);
// output: true