change-case
Advanced tools
Package description
The change-case package is a utility library that provides various functions to transform strings between different cases, such as camel case, snake case, kebab case, and more. It is useful for formatting strings in different coding conventions or textual formats.
camelCase
Converts a string to camel case.
const { camelCase } = require('change-case');
console.log(camelCase('test string')); // 'testString'snakeCase
Converts a string to snake case.
const { snakeCase } = require('change-case');
console.log(snakeCase('test string')); // 'test_string'kebabCase
Converts a string to kebab case.
const { kebabCase } = require('change-case');
console.log(kebabCase('test string')); // 'test-string'titleCase
Converts a string to title case.
const { titleCase } = require('change-case');
console.log(titleCase('test string')); // 'Test String'constantCase
Converts a string to constant case.
const { constantCase } = require('change-case');
console.log(constantCase('test string')); // 'TEST_STRING'Lodash is a comprehensive utility library that includes methods for string case transformation, such as _.camelCase, _.snakeCase, and _.kebabCase. It offers a wider range of utilities beyond string case conversion, making it more versatile but also larger in size compared to change-case.
The 'case' package is another string case conversion library that supports various case transformations. It is similar to change-case but has a different API and may have different case conversion implementations.
String-case is a library that provides case conversion functions similar to change-case. It may offer a different set of features or API design, which could be preferred by some developers over change-case.
Readme
Convert strings between camelCase, PascalCase, Title Case, snake_case, lowercase, UPPERCASE, CONSTANT_CASE and more.
All methods support Unicode (non-ASCII characters) and non-string entities, such as objects with a toString property, numbers and booleans. Empty values (null and undefined) will result in an empty string.
Methods are also available on npm as an individual packages.
npm install change-case --save
var changeCase = require('change-case')
//=> { isUpperCase: [Function], camelCase: [Function], ... }
Available methods (short-hand shown below, long-hand available in examples):
All methods accept two arguments, the string to change case and an optional locale.
Return as a string with the separators denoted by having the next letter capitalized.
changeCase.camelCase('test string')
//=> "testString"
Return as an upper case, underscore separated string.
changeCase.constantCase('test string')
//=> "TEST_STRING"
Return as a lower case, period separated string.
changeCase.dotCase('test string')
//=> "test.string"
Return as a title cased, dash separated string.
changeCase.headerCase('test string')
//=> "Test-String"
Return a boolean indicating whether the string is lower cased.
changeCase.isLowerCase('test string')
//=> true
Return a boolean indicating whether the string is upper cased.
changeCase.isUpperCase('test string')
//=> false
Return the string in lower case.
changeCase.lowerCase('TEST STRING')
//=> "test string"
Return the string with the first character lower cased.
changeCase.lowerCaseFirst('TEST')
//=> "tEST"
Return the string without any casing (lower case, space separated).
changeCase.noCase('test string')
//=> "test string"
Return as a lower case, dash separated string.
changeCase.paramCase('test string')
//=> "test-string"
Return as a string denoted in the same fashion as camelCase, but with the first letter also capitalized.
changeCase.pascalCase('test string')
//=> "TestString"
Return as a lower case, slash separated string.
changeCase.pathCase('test string')
//=> "test/string"
Return as a lower case, space separated string with the first letter upper case.
changeCase.sentenceCase('testString')
//=> "Test string"
Return as a lower case, underscore separated string.
changeCase.snakeCase('test string')
//=> "test_string"
Return as a string with every character case reversed.
changeCase.swapCase('Test String')
//=> "tEST sTRING"
Return as a space separated string with the first character of every word upper cased.
changeCase.titleCase('a simple test')
//=> "A Simple Test"
Return the string in upper case.
changeCase.upperCase('test string')
//=> "TEST STRING"
Return the string with the first character upper cased.
changeCase.upperCaseFirst('test')
//=> "Test"
Includes a TypeScript definition.
MIT
FAQs
Transform a string between `camelCase`, `PascalCase`, `Capital Case`, `snake_case`, `kebab-case`, `CONSTANT_CASE` and others
We found that change-case demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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