decamelize

Convert a camelized string into a lowercased one with a custom separator
Example: unicornRainbow → unicorn_rainbow

If you use this on untrusted user input, don't forget to limit the length to something reasonable.

Install

npm install decamelize

If you need Safari support, stay on version 3 until they implement regex lookbehinds.

Usage

import decamelize from 'decamelize';

decamelize('unicornRainbow');
//=> 'unicorn_rainbow'

decamelize('unicornRainbow', {separator: '-'});
//=> 'unicorn-rainbow'

decamelize('testGUILabel', {preserveConsecutiveUppercase: true});
//=> 'test_GUI_label'

decamelize('testGUILabel', {preserveConsecutiveUppercase: false});
//=> 'test_gui_label'

API

decamelize(input, options?)

input

Type: string

options

Type: object

separator

Type: string
Default: '_'

The character or string used to separate words.

import decamelize from 'decamelize';

decamelize('unicornRainbow');
//=> 'unicorn_rainbow'

decamelize('unicornRainbow', {separator: '-'});
//=> 'unicorn-rainbow'

preserveConsecutiveUppercase

Type: boolean
Default: false

Preserve sequences of uppercase characters.

import decamelize from 'decamelize';

decamelize('testGUILabel');
//=> 'test_gui_label'

decamelize('testGUILabel', {preserveConsecutiveUppercase: true});
//=> 'test_GUI_label'

camelcase - The inverse of this package
decamelize-keys - Convert object keys from camel case

sindresorhus/decamelize