# gaearon/overreacted.io

Personal blog by Dan Abramov.

Repository: https://github.com/gaearon/overreacted.io
Canonical: https://ross.abutalabs.com/products/overreactedio
Homepage: https://overreacted.io
Language: TypeScript
License Family: other
Last push: 2026-07-04T03:29:12+00:00

## Health v2 (maintenance only)
Score: 73/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 90, release rhythm 35, longevity 100
- inputs: {"age_days": 2833, "days_push": 60, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license, no_readme
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 7270, forks 1708 (observed 2026-08-28T04:09:57.942657+00:00)

## What it is
The source code for overreacted.io, Dan Abramov's personal blog containing in-depth essays on React internals, JavaScript, and web development. The repository is a static site (built with Gatsby) whose content is the educational resource itself.

## Use cases
- read deep-dive articles explaining how React works internally
- learn how setState and React reconcilers work under the hood
- understand React Server Components through long-form tutorials
- study how a personal developer blog is built with Gatsby and TypeScript
- find well-written explanations of JavaScript fundamentals like classes and prototypes

## When to choose
- you want to learn React internals from one of its core maintainers
- you need high-quality long-form explanations of JavaScript and React concepts
- you want a reference example of a Gatsby-based blog setup

## When to avoid
- you need a reusable library or tool to install in your project
- you want up-to-date official React documentation rather than opinionated essays
- you need a maintained software product with a license and releases

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, static-site-generator, markdown
- domain: web-development, frontend, developer-tools, tutorials
- platform: -
- tags: blog, react, gatsby, personal-blog, static-site, dan-abramov, overreacted, nodejs, web-server, javascript

## Member repositories
- gaearon/overreacted.io (main) score 73

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:57.942657+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:38:55.456972+00:00, confidence not recorded.
  - homepage: https://overreacted.io (fetched 2026-08-29T08:34:34.436566+00:00, sha 409ce77823e0)
  - site_page: https://overreacted.io/how-does-setstate-know-what-to-do (fetched 2026-08-29T08:34:34.447963+00:00, sha 937909774a05)
  - site_page: https://overreacted.io/how-does-react-tell-a-class-from-a-function (fetched 2026-08-29T08:34:34.450195+00:00, sha 04e340099a5a)
- Data as of 2026-08-30T08:39:29.467469+00:00.