Indium

Indium is a JavaScript development environment for Emacs.

Indium is Free Software, licensed under the GPL v3.0. You can follow its development on GitHub.

Indium connects to a browser tab or nodejs process and provides several features for JavaScript development, including:

• a REPL (with auto completion) & object inspection;
• an inspector, with history and navigation;
• a scratch buffer (M-x indium-scratch);
• JavaScript evaluation in JS buffers with indium-interaction-mode;
• a stepping Debugger, similar to edebug, or cider.

This documentation can be read online at https://indium.readthedocs.io and in Info format (within Emacs with (info "Indium")).

It is also available in Info format and can be consulted from within Emacs with C-h i m indium RET.

Table of contents

• Installation
  • The Indium server
  • Using MELPA
  • Manual installation
• Getting up and running
  • Project configuration
  • General configuration
  • Chrome/Chromium configuration options
  • NodeJS configuration options
  • Starting Indium
  • NodeJS requirements
  • Chrome/Chromium requirements
• The REPL
  • Starting a REPL
  • Using the REPL
  • Code evaluation & context
• Interaction in JS buffers
  • Evaluating and inspecting
  • Switching to the REPL buffer
  • Adding and removing breakpoints
• The stepping debugger
  • Using sourcemaps
  • Blackboxing scripts
• The inspector
  • Using the inspector
• Troubleshooting
  • General advice before reporting issues
  • The Indium server doesn’t start
  • Breakpoints are not set (not using sourcemaps)
  • Breakpoints and debugging do not work (using sourcemaps)

Indices and tables

• Index
• Module Index
• Search Page