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API

Node

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

// Analyse folder on disc
const folder = './src';
const options = { keepVendored: false, quick: false };
const { files, languages, unknown } = await linguist(folder, options);

// Analyse file content from raw input
const fileNames = ['file1.ts', 'file2.ts', 'ignoreme.js'];
const fileContent = ['#!/usr/bin/env node', 'console.log("Example");', '"ignored"'];
const options = { ignoredFiles: ['ignore*'] };
const { files, languages, unknown } = await linguist(fileNames, { fileContent, ...options });

• linguist(entry?, opts?) (default export): Analyse the language of all files found in a folder or folders.
  • entry (optional; string or string array): The folder(s) to analyse (defaults to ./).
  • opts (optional; object): An object containing analyser options.
    • fileContent (string or string array): Provides the file content associated with the file name(s) given as entry to analyse instead of reading from a folder on disk.
    • ignoredFiles (string array): A list of file path globs to explicitly ignore.
    • ignoredLanguages (string array): A list of languages to ignore.
    • categories (string array): A list of programming language categories that should be included in the results. Defaults to ['data', 'markup', 'programming', 'prose'].
    • childLanguages (boolean): Whether to display sub-languages instead of their parents when possible (defaults to false).
    • quick (boolean): Whether to skip complex language analysis such as the checking of heuristics and gitattributes statements (defaults to false). Alias for checkAttributes:false, checkIgnored:false, checkDetected:false, checkHeuristics:false, checkShebang:false, checkModeline:false.
    • offline (boolean): Whether to use pre-packaged metadata files instead of fetching them from GitHub at runtime (defaults to false).
    • calculateLines (boolean): Whether to calculate line of code totals (defaults to true).
    • keepVendored (boolean): Whether to keep vendored files (dependencies, etc) (defaults to false). Does nothing when fileContent is set.
    • keepBinary (boolean): Whether binary files should be included in the output (defaults to false).
    • relativePaths (boolean): Change the absolute file paths in the output to be relative to the current working directory (defaults to false).
    • checkAttributes (boolean): Force the checking of .gitattributes files (defaults to true unless quick is set). Does nothing when fileContent is set.
    • checkIgnored (boolean): Force the checking of .gitignore files (defaults to true unless quick is set). Does nothing when fileContent is set.
    • checkDetected (boolean): Force files marked with linguist-detectable to show up in the output, even if the file is not part of the declared categories.
    • 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).
    • checkModeline (boolean): Check modelines for explicit language classification (defaults to true unless quick is set).

Command-line

linguist --analyze [<folders...>] [<options...>]
linguist --help
linguist --version

• --analyze: Analyse the language of all files found in a folder or folders.
  • [<folders...>]: The folders to analyse (defaults to ./).
  • --ignoredFiles <globs...>: A list of file path globs to ignore.
  • --ignoredLanguages <languages...>: A list of languages to exclude from the output.
  • --categories <categories...>: A list of language categories that should be displayed in the output. Must be one or more of data, prose, programming, markup.
  • --childLanguages: Display sub-languages instead of their parents, when possible.
  • --json: Only affects the CLI output. Display the outputted language data as JSON.
  • --tree <traversal>: Only affects the CLI output. A dot-delimited traversal to the nested object that should be logged to the console instead of the entire output. Requires --json to be specified.
  • --listFiles: Only affects the visual CLI output. List each matching file and its size under each outputted language result. Does nothing if --json is specified.
  • --quick: Skip the checking of .gitattributes and .gitignore files for manual language classifications. Alias for --checkAttributes=false --checkIgnored=false --checkHeuristics=false --checkShebang=false --checkModeline=false.
  • --offline: Use pre-packaged metadata files instead of fetching them from GitHub at runtime.
  • --calculateLines: Calculate line of code totals from files.
  • --keepVendored: Include vendored files (auto-generated files, dependencies folder, etc) in the output.
  • --keepBinary: Include binary files in the output.
  • --relativePaths: Change the absolute file paths in the output to be relative to the current working directory.
  • --checkAttributes: Force the checking of .gitatributes files. Use alongside --quick to override it disabling this option.
  • --checkIgnored: Force the checking of .gitignore files. Use alongside --quick to override it disabling this option.
  • --checkDetected: Force files marked with linguist-detectable to show up in the output, even if the file is not part of the declared --categories. Use alongside --quick to override it disabling this option.
  • --checkHeuristics: Apply heuristics to ambiguous languages. Use alongside --quick to override it disabling this option.
  • --checkShebang: Check shebang (#!) lines for explicit classification. Use alongside --quick to override it disabling this option.
  • --checkModeline: Check modelines for explicit classification. Use alongside --quick to override it disabling this option.
• --help: Display the help message.
• --version: Display the current installed version of LinguistJS.