Project Summary

This project is a tiny JavaScript runtime, directly inspired by Node.js. It is built in Rust and uses V8 Engine.

API

console.log(arg)

Parameters:

• arg (String|Number) The string to be printed to the console.

setTimeout(callback, delay)

setInterval(callback, delay)

Parameters:

• callback (Function) The function to be executed repeatedly at each interval.
• interval (Number) The time, in milliseconds, between successive executions of the callback.

FS

fs.readFile(path, callback)

fs.writeFile(path, data, callback)

Parameters:

• path (String): The file path to be read.
• data (String): The content to write to the file.
• callback (Function): A function that will be executed once the file is read. The callback takes two arguments:
  • error (String|Null): If an error occurs, this will contain the error message. Otherwise, it will be null.
  • data (String): The content of the file, returned as a string.

HTTP

http.createServer()

Returns (Object): Server

http.get(url, callback)

http.request(options, callback)

Parameters:

• url (String): The address to which the HTTP request is directed
• options (Object): The configuration for an HTTP request containing the following properties:
  • hostname (String): The server's domain or IP address
  • port (Number): The port number to connect to on the server
  • path (String): The endpoint on the server for the request
  • method (String): The HTTP method to use
  • headers (Object): Optional, an object of request headers, with each key as a header name

SERVER

server.listen(port, hostname)

Parameters:

• port (Number): The port number to connect to on the server
• hostname (String): The server's domain or IP address

REQUEST

req.headers()

Returns (HashMap<String, String>):

req.method()

Returns (String): each entry consists of a header key pair value where the name of the header is the key and the value is the corresponding value

req.url()

Returns (String): the HTP method used for the request

req.end()

RESPONSE

Methods:

req.setHeader()

req.statusCode()

req.end()

Resources

Deno

• Deno Internals Book
• Roll your own runtime

YouTube

• Create Your Own JavaScript Runtime, Eric Wendal
• How to use v8 isolates in Rust using rusty_v8

Github

• dune
• runtime
• dudeJs
• learning-v8

Docs

• rusty_v8

Personal

• YouTube Series
• Medium
• Blog Posts