Linguist

Analyses all files located in a given folder and collates the results.

Powered by github-linguist, although it doesn't need to be installed.

Install

Linguist is available on npm as linguist-js.

Install locally using npm install linguist-js and import it into your code like so:

const linguist = require('linguist-js');

Or install globally using npm install -g linguist-js and run using the CLI command linguist.

linguist --help

Usage

Linguist contains one function which analyses a given folder.

As an example, take the following file structure:

.
| src
| | cli.js 1kB
| | index.ts 2kB
| readme.md 3kB

Running Linguist on this folder will return the following JSON:

{
    "count": 3,
    "results": {
        "src/index.ts": "TypeScript",
        "src/cli.js": "JavaScript",
        "readme.md": "Markdown"
    },
    "languages": {
        "all": {
            "JavaScript": { "type": "programming", "bytes": 1000, "color": "#f1e05a" },
            "TypeScript": { "type": "programming", "bytes": 2000, "color": "#2b7489" },
            "Markdown": { "type": "prose", "bytes": 3000, "color": "#083fa1" }
        },
        "programming": { "JavaScript": 1000, "TypeScript": 2000 },
        "markup": {},
        "data": {},
        "prose": { "Markdown": 3000 },
        "unknown": {},
        "total": { "unique": 3, "bytes": 6000, "unknownBytes": 0 }
    }
}

API

Node

const linguist = require('linguist-js');
let folder = './src';
let options = { keepVendored: false, quick: false };
let { count, results, languages } = linguist(folder, options);

• linguist(folder?, opts?) (default export): Analyse the language of all files found in a folder.
  • folder (optional; string): The folder(s) to analyse (defaults to ./). Analyse multiple folders using the syntax "{folder1,folder2,...}".
  • opts (optional; object): An object containing analyser options.
    • ignore (string array): A list of file path globs to explicitly ignore.
    • quick (boolean): Whether to skip the checking of .gitattributes and .gitignore files for manual language classifications (defaults to false). Alias for checkAttributes:false, checkIgnored:false, checkHeuristics:false, checkShebang:false.
    • keepVendored (boolean): Whether to keep vendored files (dependencies, etc) (defaults to false).
    • checkAttributes (boolean): Force the checking of .gitattributes files (defaults to true unless quick is set).
    • checkIgnored (boolean): Force the checking of .gitignore files (defaults to true unless quick is set).
    • checkHeuristics (boolean): Apply heuristics to ambiguous languages (defaults to true unless quick is set).
    • checkShebang (boolean): Check shebang (#!) lines for explicit language classification (defaults to true unless quick is set).

Command-line

linguist --analyze [<folder>] [<...options>]
linguist --help

• --analyze: Analyse the language of all files found in a folder.
  • <folder> (optional): The folder to analyse (defaults to ./). Analyse multiple folders using the syntax "{folder1,folder2,...}".
  • --ignore (optional): A list of file path globs to ignore.
  • --files (optional): Whether to print a full list of all files analysed. Does nothing when --summary is specified.
  • --summary (optional): Output language data in a human-readable manner instead of JSON.
  • --quick (optional): Whether to skip the checking of .gitattributes and .gitignore files for manual language classifications. Alias for --checkAttributes=false --checkIgnored=false --checkHeuristics=false --checkShebang=false.
  • --keepVendored (optional): Whether to include vendored files (auto-generated files, dependencies folder, etc).
  • --checkAttributes (optional): Force the checking of .gitatributes files (use alongside --quick to overwrite).
  • --checkIgnored (optional): Force the checking of .gitignore files (use alongside --quick to overwrite).
  • --checkHeuristics (optional): Apply heuristics to ambiguous languages (use alongside --quick to overwrite).
  • --checkShebang (optional): Check shebang (#!) lines for explicit classification (use alongside --quick to overwrite).
• --help: Display a help message.
• --version: Display the current version of linguist-js.