debug vs IceCream
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A tiny debugging helper for JavaScript that prints namespaced log messages, toggled by the DEBUG variable.
Open source · MIT
A Python debugging helper that prints variables, expressions, and code location better than print().
The short answer
Choose debug if you need…
- Node.js developers who want named, toggleable log output instead of plain console.log calls
- Library authors who want their users to turn on internal debug output selectively
- Developers debugging a specific part of a larger app without flooding the terminal
- Front-end developers who want to enable browser-side logs through localStorage
Choose IceCream if you need…
- Python developers who add print() statements to debug code
- Students learning how values change while a program runs
- Developers who want debug output that can be turned off without removing calls
- Developers who want to wrap existing code without changing its behavior, since ic() returns its arguments
Side-by-side
| debug | IceCream | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 11.5k | 10.1k |
| Setup difficulty | Beginner | Beginner |
| How you get it | Install with a package manager | Install with a package manager |
| Main language | JavaScript | Python |
| Last code update | 23 days ago | 17 days ago |
What each one is
debug
debug is a small JavaScript utility that lets you add debug log lines to code and switch them on or off by name. You give each logger a name, such as the name of your module, and then choose which names to show using the DEBUG environment variable. It works in Node.js and in web browsers, and it is modelled after Node.js core's debugging approach.
IceCream
IceCream provides a function called ic() that you call on a variable or expression. It prints the expression's text along with its value, formatted and syntax highlighted, and can optionally add the filename, line number, and parent function. It is meant as a more convenient replacement for adding print() statements while debugging Python code.
Best for
debug
- Node.js developers who want named, toggleable log output instead of plain console.log calls
- Library authors who want their users to turn on internal debug output selectively
- Developers debugging a specific part of a larger app without flooding the terminal
- Front-end developers who want to enable browser-side logs through localStorage
IceCream
- Python developers who add print() statements to debug code
- Students learning how values change while a program runs
- Developers who want debug output that can be turned off without removing calls
- Developers who want to wrap existing code without changing its behavior, since ic() returns its arguments
Strengths
debug
- Very small and simple API: call the exported function with a name and use the returned logger
- Output can be filtered with wildcards and exclusions, such as DEBUG=*,-connect:*
- Works in both Node.js and browsers, with colors and millisecond timing shown in the output
IceCream
- Shows both the expression text and its value, which plain print() does not
- Returns its arguments, so it can be inserted into existing code without breaking it
- Can be toggled off globally with ic.disable() and ic.enable()
Not ideal for
debug
- People who need a full logging system with log levels, file rotation, or shipping logs to services, since the README describes only namespaced debug output
- Beginners who have never used the command line, since enabling output relies on setting environment variables
IceCream
- Production logging needs, since the README suggests a standard logger via ic.format() and notes built-in log levels are not provided
- Non-Python projects, since this is a Python library
Trade-offs
debug
- Colors in Node.js are better when the optional supports-color module is installed alongside it, and browser console output may need the Verbose level enabled
- Setting DEBUG differs between Windows CMD and PowerShell, which adds friction on Windows
- Output goes to stderr by default, so it may need configuring if you expect stdout
IceCream
- The README does not describe built-in log level support; users are pointed to ic.format() with a logger instead
- Advanced customization like argToStringFunction requires reading the configuration section carefully
Getting started
Frequently asked questions
What is the difference between debug and IceCream?
debug: A tiny debugging helper for JavaScript that prints namespaced log messages, toggled by the DEBUG variable. IceCream: A Python debugging helper that prints variables, expressions, and code location better than print(). debug suits node.js developers who want named, toggleable log output instead of plain console.log calls, while IceCream suits python developers who add print() statements to debug code.
Are debug and IceCream free?
debug: Free and open source. IceCream: Free and open source.
Is debug or IceCream more popular?
debug has more GitHub stars (11.5k) than IceCream (10.1k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to debug and IceCream?
Other options people compare them with include winston, pino, PySnooper.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.