Awesome
NiL.JS
Open source ECMAScript 6.0 (ES2015) (JavaScript) engine. Licensed under BSD 3-Clause License.
var context = new Context();
context.Eval(@"console.log(
`This is a JavaScript engine written in C#.
This engine can perform js code on NET Framework 4.6.1+, NET Standard 1.3+, NET Core 3.1, 5.0 and 6.0`)");