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wtf is todomvc?

styled-components/todomvc — explained in plain English

Analysis updated 2026-07-25 · repo last pushed 2026-04-09

6JavaScriptAudience · developerComplexity · 2/5MaintainedSetup · moderate

TL;DR

A demo to-do list app built with React and styled-components, showing how visual styling can be written directly inside JavaScript code alongside app logic.

Mindmap

mindmap
  root((repo))
    What it does
      Task manager demo
      Styles inside JavaScript
      Part of Speedometer benchmark
    Tech stack
      React
      styled-components
      JavaScript
    Use cases
      Learn styled-components
      Compare web technologies
      Browser performance testing
    Audience
      Web developers
      Technical founders
      Performance teams

Code map

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filefunction / class

Why would anyone build with this?

REASON 1

Learn how styled-components works by studying a real working to-do list app.

REASON 2

Compare styled-components against other styling approaches using the standard TodoMVC benchmark.

REASON 3

Use the app as a reference for writing visual styles directly inside JavaScript code.

REASON 4

Run the project as part of Speedometer 2.0 to measure browser performance with interactive apps.

What's in the stack?

JavaScriptReactstyled-components

How it stacks up

styled-components/todomvcanil-matcha/open-ai-vibe-coding-coursearthurmoorgan/drift
Stars666
LanguageJavaScriptJavaScriptJavaScript
Last pushed2026-04-092026-06-30
MaintenanceMaintainedActive
Setup difficultymoderateeasymoderate
Complexity2/51/52/5
Audiencedeveloperpm foundergeneral

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · moderate Time to first run · 30min

The README lacks setup instructions, so you need prior familiarity with standard JavaScript development workflows to run it locally.

No license information is provided in the repository, so usage rights are unclear.

Wtf does this do

This repository is a demo project that rebuilds a classic to-do list app using a tool called styled-components. It takes the well-known TodoMVC benchmark, a standard test app used to compare different web technologies, and recreates it with React and styled-components to show how styling can be handled directly within the code. The app itself is a simple task manager where users can add, complete, and delete daily tasks. The notable part is how the look and feel of the app are built. Instead of using separate style files, styled-components lets a developer write the visual styles directly alongside the app's logic in JavaScript. This means the button, text, and layout rules are all packaged together in the same code blocks. This project would primarily be useful for developers or technical founders who are learning about modern web development. If someone is trying to understand how styled-components works in a real application, this serves as a clear, hands-on example. It is also used as part of Speedometer 2.0, which is a performance benchmark that tests how fast web browsers can run interactive applications, so teams measuring software performance might also reference it. The README doesn't go into detail on setup or usage instructions, so anyone looking to run the project locally would likely need to be familiar with standard JavaScript development workflows. As a bare-bones demonstration, the focus is strictly on showing the code structure rather than providing a guided tutorial.

Yoink these prompts

Prompt 1
Help me set up and run this styled-components TodoMVC demo project locally. Walk me through the standard JavaScript steps needed to install dependencies and start the dev server.
Prompt 2
Explain how the styled-components approach in this TodoMVC app differs from writing styles in separate CSS files. Point me to the specific code patterns used in the repo.
Prompt 3
Show me how to add a new feature like task prioritization to this to-do app while following the existing styled-components pattern where styles live alongside the component logic.
Prompt 4
Use this repository as a reference to help me build a new small React app using styled-components, applying the same pattern of packaging visual styles directly inside JavaScript component files.

Frequently asked questions

wtf is todomvc?

A demo to-do list app built with React and styled-components, showing how visual styling can be written directly inside JavaScript code alongside app logic.

What language is todomvc written in?

Mainly JavaScript. The stack also includes JavaScript, React, styled-components.

Is todomvc actively maintained?

Maintained — commit in last 6 months (last push 2026-04-09).

What license does todomvc use?

No license information is provided in the repository, so usage rights are unclear.

How hard is todomvc to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is todomvc for?

Mainly developer.

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