REPL
Read-Eval-Print-Loop (REPL) is a simple, interactive computer programming environment that takes single user inputs (i.e. single expressions), evaluates them, and returns the result to the user.
Main process
Electron exposes the Node.js repl module
through the --interactive CLI flag. Assuming you have electron installed as a local project
dependency, you should be able to access the REPL with the following command:
./node_modules/.bin/electron --interactive
note
electron --interactive is not available on Windows
(see electron/electron#5776 for more details).
Renderer process
You can use the DevTools Console tab to get a REPL for any renderer process. To learn more, read the Chrome documentation.