What is the best Javascript web framework to use to build a single page web app?
user
Create a TypeScript function that computes the implied volatility using the Black-Scholes model. Where the inputs are the underlying price, strike price, free-risk rate, and option price. Write it step by step, with an explanation for each step.
assistant
Sorry but I am asking you a recommendation question, not asking you for a question for inputting into chat program. Please tell me the best Javascript web framework for single page web app.
user
There are many JavaScript web frameworks that allow you to create a Single-Page Application (SPA). 
- React is a popular framework developed and maintained by Meta (formerly Facebook). React is one of the most popular frameworks for SPAs. It allows you to create applications through a component architecture, a novel blending of Javascript and HTML. 
- Vue.js is another popular framework for SPAs. Created and maintained by Evan You and others, it is an open source framework which promises more lightweight applications.
- Yet another popular framework is Angular. It is maintained by Google as well as an open-source community. Angular is based on TypeScript, a superset of the JavaScript language which offers additional type features. It is designed with high-performance single-page applications in mind.
- It is also possible to create a single page web application without any frameworks at all using the ```fetch``` API. 

Each of these frameworks have their merits so it is hard to judge which one is "the best". Ultimately, it will be up to you to decide which option, if any of these is the best.
assistant