decamelize

What is decamelize?

The decamelize npm package is used to convert a string from camelCase to a lower case string with a custom separator (defaulting to an underscore). It is useful for transforming variable names or keys in objects from camelCase to a format that is more common in other languages or contexts, such as snake_case for database fields or kebab-case for CSS class names.

What are decamelize's main functionalities?

Decamelize a string

Converts 'myCamelCaseString' to 'my_camel_case_string' using the default separator.

"myCamelCaseString".decamelize()

Decamelize with a custom separator

Converts 'myCamelCaseString' to 'my-camel-case-string' using a custom separator ('-').

"myCamelCaseString".decamelize('-')

Preserve consecutive uppercase characters

Converts 'myURLString' to 'my_url_string', preserving the consecutive uppercase characters.

"myURLString".decamelize('_', { preserveConsecutiveUppercase: true })

Other packages similar to decamelize

snake-case

The snake-case package converts strings to snake_case. It is similar to decamelize but is specifically tailored to produce snake_case without providing options for custom separators.

kebab-case

The kebab-case package is designed to convert strings to kebab-case. While it serves a similar purpose in changing the case of strings, it is focused on kebab-case rather than providing a customizable separator.

change-case

The change-case package is a more comprehensive string transformation library that includes a variety of case conversion functions, including decamelize. It offers a broader set of functionalities compared to the single-purpose decamelize package.

README

decamelize

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

Install

$ npm install decamelize

Usage

const decamelize = require('decamelize');

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

decamelize('unicornRainbow', '-');
//=> 'unicorn-rainbow'

API

decamelize(input, [separator])

input

Type: string

separator

Type: string
Default: _

Related

See camelcase for the inverse.

License

MIT © Sindre Sorhus