node-repl-loader

Namespaced REPL for NodeJS using Webpack. Heavily inspired by Clojure and the writings of James Long

THIS IS ALPHA, BE CAREFUL

I'm also VERY interested in feedback / PRs, so send them my way or email me!

TODOs

• Be able to detect when a module is an entry point, and only inject REPL code there (so we can support multiple entry points)
• Support different REPL in/out streams (right now we only support stdin/stdout)
• Leverage the builtin REPL eval(), giving us autocomplete, etc.

How it works

Check out this example repo to see a trivial example.

Appends an __eval() to each modules' exports. Then it starts a custom REPL in the entry point. Use ns variableName to switch to that variables' context. Any commands you run afterwards will be eval'd in the context of variableName. Type ns to return back to the base context.

Usage

npm install --save-dev node-repl-loader

Just add this to your loaders list for JS files. Right now this only supports 1 entry point, so your webpack.config.js has to be in the form of:

  entry: "./foo.js",

and not

  entry: {
    foo: "./foo.js",
  }

This will start a REPL for your NodeJS app. To switch to a different variable namespace, type ns variableName.