# aemkei/jsfuck

Write any JavaScript with 6 Characters: []()!+

Repository: https://github.com/aemkei/jsfuck
Canonical: https://ross.abutalabs.com/products/jsfuck
Language: JavaScript
License: WTFPL
License Family: permissive
Last push: 2025-03-10T08:15:33+00:00

## Health v2 (maintenance only)
Score: 37/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 10, release rhythm 35, longevity 100
- inputs: {"age_days": 5134, "days_push": 541, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8597, forks 681 (observed 2026-08-28T04:10:23.749508+00:00)

## What it is
JSFuck is an esoteric JavaScript library that encodes and executes arbitrary JavaScript using only six characters: []()!+. It works both in browsers and Node.js and is primarily educational and obfuscation-oriented.

## Use cases
- encode javascript into only six characters
- obfuscate javascript source code
- study javascript type coercion and internals
- demonstrate esoteric programming techniques
- test javascript parser and sandbox robustness

## When to choose
- you need extreme javascript code obfuscation
- you want to teach or explore javascript coercion quirks
- you are building security tests around eval and code injection

## When to avoid
- you need readable or maintainable code
- performance matters since output is massively inflated
- you need real obfuscation guarantees rather than novelty

## Facets
- artifact type: library
- maturity: maintenance
- function: interpreter, compiler, developer-tools
- domain: programming-languages, developer-tools, security
- platform: browser, cross-platform
- tags: esoteric-language, obfuscation, javascript, code-golf, nodejs

## Member repositories
- aemkei/jsfuck (main) score 37

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:23.749508+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 2026-08-29T17:26:08.425785+00:00, confidence not recorded.
  - readme: https://github.com/aemkei/jsfuck (fetched 2026-08-28T04:10:23.749508+00:00, sha 9b14af5ac989)
  - registry_npm: https://registry.npmjs.org/jsfuck (fetched 2026-08-29T08:26:41.445700+00:00, sha b29e4fa340af)
- Data as of 2026-08-30T08:39:29.467469+00:00.