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documentationjs/documentation

5,798JavaScriptAudience · developerComplexity · 2/5Setup · easy

TLDR

A command-line tool that reads JSDoc comments in JavaScript source files and automatically generates polished HTML, Markdown, or JSON documentation.

Mindmap

mindmap
  root((documentation.js))
    What it does
      Auto-generate docs
      Read JSDoc
      Multiple outputs
    Commands
      build docs
      lint comments
      readme inject
    Tech
      JavaScript
      JSDoc
      HTML Markdown
    Use cases
      Library docs
      README updates
      GitHub source links
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filefunction / class

Things people build with this

USE CASE 1

Generate an HTML documentation website from JSDoc comments in a JavaScript library with a single command.

USE CASE 2

Lint all JSDoc comments in a project to catch formatting mistakes and missing parameter descriptions.

USE CASE 3

Inject an auto-generated API section directly into a project README without copying and pasting by hand.

USE CASE 4

Build docs that include clickable links back to the exact source code lines on GitHub.

Tech stack

JavaScriptJSDocHTMLMarkdownJSON

Getting it running

Difficulty · easy Time to first run · 5min

In plain English

documentation.js is a command-line tool that reads JavaScript source code and generates human-readable documentation from it automatically. The idea is that instead of writing a separate documentation file by hand, you annotate your code with specially formatted comments, and the tool converts those comments into a polished output format. The comment format it reads is called JSDoc, a convention where you describe a function, its parameters, and its return values in a structured comment block directly above the code. documentation.js reads those annotations and can understand modern JavaScript syntax including older ES5 code, newer ES2017 features, JSX (used in React-style projects), Vue files, and Flow type annotations. It also tries to figure out some things automatically, like parameter types and structure, so you do not have to document every detail yourself. The output can be generated in several formats: an HTML website, Markdown text, or raw JSON data. For HTML output there is a default template, and the theming system lets you customize the look. One integration connects to GitHub so that generated docs include links back to the exact lines of source code they describe. From the command line, the main operations are: build (produce documentation files), lint (check your JSDoc comments for common mistakes), and readme (inject an API section directly into an existing README file). This last one is useful for keeping a project's README up to date without manual copying. The project describes itself as an open wiki-style open source project, meaning contributors who make meaningful improvements are given direct commit access rather than going through a gated pull-request process. It is published on npm and can be installed globally with a single command.

Copy-paste prompts

Prompt 1
Run documentation.js build on my JavaScript utility library and generate an HTML docs site, show the command and how to point it at my source files.
Prompt 2
My README has a section marked for auto-generation, use documentation.js readme to fill in the API reference for my Node module automatically.
Prompt 3
I have JSDoc comments on all my exported functions but documentation.js lint keeps reporting errors, what are the most common JSDoc mistakes to fix?
Prompt 4
Generate Markdown docs from my JSDoc comments and write them into a docs/ folder so GitHub Pages can serve them.
Prompt 5
Show me how to configure documentation.js to include links back to the source lines on GitHub in the generated HTML.
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