📃 Table of Contents

• Features
• Usage
• API
• Examples
• Changelog
• Support
• License
• Related
• Author

🤖 Features

• 💬 comments out code or strings using each language's native style
• 🌍 supports tons of languages via dynamic formatter lookup
• 🔍 finds formatters with fuzzy, case-insensitive matching
• 🧪 checks if a language is supported before formatting
• 🏷️ allows custom aliases for formatter reuse
• 📦 exposes all formatters for direct use or inspection
• 🔄 handles mixed separators and normalizes input
• 🚫 rejects invalid or duplicate aliases

🕵🏼 Usage

Install it by executing any of the following, depending on your preferred package manager:

pnpm add @igorskyflyer/comment-it

yarn add @igorskyflyer/comment-it

npm i @igorskyflyer/comment-it

🤹🏼 API

getLanguageIds()

getLanguageIds(): string[]

Gets IDs of all available language formatters. Language formatters are callable as comment.<languageId>. See more below at comment.

language()

language(id: string): CommentFormatter | null

Performs a case-insensitive search for a language formatter with the provided id and returns it - if one is found - else returns null.

supportsLanguage()

supportsLanguage(id: string): boolean

Returns whether the given language formatter is supported, case-insensitive.

See the comment object below for available valid identifiers.

alias()

 alias(id: CommentLanguage, alias: string): boolean

Adds an alias for an existing comment formatter. Returns true upon success, false otherwise.

comment

An object where all formatters are stored.

comment's properties/formatters:

• comment.ada - Ada
• comment.bash - Bash
• comment.batch - Batch
• comment.c - C
• comment.carbon - Carbon
• comment.cSharp - C#
• comment.coffeeScript - CoffeeScript
• comment.cpp - C++
• comment.crystal - Crystal
• comment.css - CSS
• comment.dart - Dart
• comment.delphi - Delphi
• comment.dockerFile - Dockerfile
• comment.elixir - Elixir
• comment.erlang - Erlang
• comment.euphoria - Euphoria
• comment.fortran - Fortran
• comment.fSharp - F#
• comment.genie - Genie
• comment.go - Go
• comment.groovy - Groovy
• comment.hack - Hack
• comment.haskell - Haskell
• comment.html - HTML
• comment.icon - Icon
• comment.java - Java
• comment.javaScript - JavaScript
• comment.jsx - JSX
• comment.julia - Julia
• comment.kotlin - Kotlin
• comment.lisp - Lisp
• comment.liveCode - LiveCode
• comment.lua - Lua
• comment.maple - Maple
• comment.matlab - MATLAB
• comment.mercury - Mercury
• comment.mql4 - MQL4
• comment.objectiveC - Objective-C
• comment.objectiveCpp - Objective-C++
• comment.oz - Oz
• comment.pascal - Pascal
• comment.perl - Perl
• comment.php - PHP
• comment.powerShell - PowerShell
• comment.pug - Pug/Jade
• comment.python - Python
• comment.q - Q
• comment.r - R
• comment.razor - Razor
• comment.red - Red
• comment.ring - Ring
• comment.ruby - Ruby
• comment.rust - Rust
• comment.scala - Scala
• comment.sql - SQL
• comment.swift - Swift
• comment.typeScript - TypeScript
• comment.vala - Vala
• comment.visualBasic - VisualBasic
• comment.vue - Vue
• comment.vueHtml - VueHtml
• comment.xml - XML

Each formatter exposes two functions, single() for single-line comments and multi() for multi-line comments.

single()

single(value: string): string

Returns a single-line comment formatted for the selected language.

multi()

multi(value: string): string

Returns a multi-line comment formatted for the selected language.

🗒️ Examples

import { comment, supportsLanguage } from '@igorskyflyer/comment-it'

const singleLine: string = 'hello world'
const multiLine: string = `hello


world

this is a test`

console.log(comment.javaScript.single(singleLine)) // prints '// hello world'

console.log(comment.jsx.single(singleLine)) // prints '{/* hello world */}'

console.log(comment.coffeeScript.multi(multiLine)) // prints '###\nhello\n\n\nworld\n\nthis is a test\n###'

// note: new lines in the example results are written as-is for brevity

console.log(supportsLanguage('lua')) // prints true
console.log(supportsLanguage('TYPEscript')) // prints true
console.log(supportsLanguage('foo')) // prints false

📝 Changelog

📑 The changelog is available here, CHANGELOG.md.

🪪 License

Licensed under the MIT license which is available here, MIT license.

💖 Support

🧬 Related

@igorskyflyer/mapped-replacer

🗺 Zero-dependency Map and RegExp based string replacer with Unicode support. 🍁

@igorskyflyer/jmap

🕶️ Reads a JSON file into a Map. 🌻

@igorskyflyer/strip-html-headings

🍛 Strips HTML headings! 🍤

@igorskyflyer/strip-headings

⛸ Strips Markdown headings! 🏹

@igorskyflyer/unc-path

🥽 Provides ways of parsing UNC paths and checking whether they are valid. 🎱

👨🏻‍💻 Author

Created by Igor Dimitrijević (@igorskyflyer).