case-anything

Case anything 🐫

npm i case-anything

10 case changing functions: camelCase, kebab-case, PascalCase and more...
A simple integration with nano package size. (SMALL footprint!)

Motivation

I created this package because most other packages that do simple case changing are so big...

I wanted to try my hand at the smallest iteration possible. (and it's 12+ times smaller than the next popular case changing package!!)

There's also a Better Touch Tool preset with keyboard shortcuts to convert selected text system wide!

Usage

case-anything supports tree-shaking and is side-effect free!

Strings without spaces

Name	Input example	Output example
🐪 camelCase	camelCase('$catDog')	catDog
🐫 PascalCase UpperCamelCase	pascalCase('$catDog') upperCamelCase	CatDog
🥙 kebab-case	kebabCase('$catDog')	cat-dog
🐍 snake_case	snakeCase('$catDog')	cat_dog
📣 CONSTANT_CASE	constantCase('$catDog')	CAT_DOG
🚂 Train-Case	trainCase('$catDog')	Cat-Dog
🕊 Ada_Case	adaCase('$catDog')	Cat_Dog
👔 COBOL-CASE	cobolCase('$catDog')	CAT-DOG
📍 Dot.notation	dotNotation('$catDog')	cat.Dog
📂 Path/case	pathCase('$catDog')	$cat/Dog
🛰 Space case	spaceCase('$catDog')	$cat Dog
🏛 Capital Case	capitalCase('$catDog')	$Cat Dog
🔡 lower case	lowerCase('$catDog')	$cat dog
🔠 UPPER CASE	upperCase('$catDog')	$CAT DOG

Special Characters

functions that strip away special characters*	functions that keep special characters*
camelCase pascalCase kebabCase snakeCase constantCase trainCase adaCase cobolCase dotNotation	pathCase spaceCase capitalCase lowerCase upperCase

*You can control wether or not to keep or remove special characters like so:

camelCase('$catDog') === 'catDog'
// force keeping special characters:
camelCase('$catDog', { keepSpecialCharacters: true }) === '$catDog'

pathCase('$catDog') === '$cat/Dog'
// force removing special characters:
pathCase('$catDog', { keepSpecialCharacters: false }) === 'cat/Dog'

Case Changing

These cases do not change the casing of the words:

• dotNotation
• pathCase
• spaceCase

dotNotation('$catDog') === 'cat.Dog'
// force lower case:
dotNotation('$catDog').toLowerCase() === 'cat.dog'

Strings with spaces

As soon as there is a space in the target string, it will regard the input as a sentence and only split each part at the spaces.

Name	Input example	Output example
🐪 camelCase	camelCase("I'm O.K.!")	imOk
🐫 PascalCase UpperCamelCase	pascalCase("I'm O.K.!") upperCamelCase	ImOk
🥙 kebab-case	kebabCase("I'm O.K.!")	im-ok
🐍 snake_case	snakeCase("I'm O.K.!")	im_ok
📣 CONSTANT_CASE	constantCase("I'm O.K.!")	IM_OK
🚂 Train-Case	trainCase("I'm O.K.!")	Im-Ok
🕊 Ada_Case	adaCase("I'm O.K.!")	Im_Ok
👔 COBOL-CASE	cobolCase("I'm O.K.!")	IM-OK
📍 Dot.notation	dotNotation("I'm O.K.!")	Im.OK
📂 Path/case	pathCase("I'm O.K.!")	I\'m/O.K.!
🛰 Space case	spaceCase("I'm O.K.!")	I\'m O.K.!
🏛 Capital Case	capitalCase("I'm O.K.!")	I\'m O.k.!
🔡 lower case	lowerCase("I'm O.K.!")	i\'m o.k.!
🔠 UPPER CASE	upperCase("I'm O.K.!")	I\'M O.K.!

Also note, that multiple sequential spaces are treated as one space.

When special characters are involved

I have extended regular alphabet with the most common Latin-1 Supplement special characters.

The coolest thing about this library is that it will "convert" special characters into regular alphabet for the cases used as variable names! 😎

// CONVERTS special characters:
camelCase('Çâfé Ågård')    === 'cafeAgard'
pascalCase('Çâfé Ågård')   === 'CafeAgard'
kebabCase('Çâfé Ågård')    === 'cafe-agard'
snakeCase('Çâfé Ågård')    === 'cafe_agard'
constantCase('Çâfé Ågård') === 'CAFE_AGARD'
trainCase('Çâfé Ågård')    === 'Cafe-Agard'
adaCase('Çâfé Ågård')      === 'Cafe_Agard'
cobolCase('Çâfé Ågård')    === 'CAFE-AGARD'
dotNotation('Çâfé Ågård')  === 'Cafe.Agard'

// DOES NOT convert special characters:
spaceCase('Çâfé Ågård')    === 'Çâfé Ågård'
pathCase('Çâfé Ågård')     === 'Çâfé/Ågård'
lowerCase('Çâfé Ågård')    === 'çâfé ågård'
upperCase('Çâfé Ågård')    === 'ÇÂFÉ ÅGÅRD'
capitalCase('Çâfé Ågård')  === 'Çâfé Ågård'

Keyboard shortcuts

With Better Touch Tool you can set up keyboard shortcuts to convert selected text with JavaScript. This repo provides an easy to install preset that has shortcuts for pascal, kebab and camel case! (thanks to @AndrewKoch) It even supports multi-cursors in VSCode!

Here is an example triggering keyboard shortcuts to convert the selected text to PascalCase; kebab-case; camelCase:

You can download the BTT preset from the source code: case-anything.bttpreset.

Package size

We'll compare this package with blakeembrey/change-case, a very famous package on npm.

	case-anything	change-case
camelCase	1.1K (572)	27.2K (6K)
pascalCase	1.1K (561)	27.4K (6.1K)
kebabCase	1.1K (541)	26.8K (5.9K)
snakeCase	1.1K (540)	26.8K (5.9K)
constantCase	1.1K (540)	27.2K (6K)
pathCase	1K (530)	26.8K (5.9K)

Source code

What keeps my package small, is that literally just uses a regex to separate "words".

// the source code is similar to:
export function splitOnSpecialChars(string: string): any[] {
  return string.match(/^[a-z]+|[A-Z][a-z]+|[a-z]+|[0-9]+|[A-Z]+(?![a-z])/g)
}

The actual regex used is a little bit more comprehensive and can be found here.

Meet the family (other utils)

• merge-anything 🥡
• filter-anything ⚔️
• find-and-replace-anything 🎣
• compare-anything 🛰
• copy-anything 🎭
• flatten-anything 🏏
• is-what 🙉