typedash
Version:
modern, type-safe collection of utility functions
22 lines (21 loc) • 735 B
JavaScript
//#region src/functions/snakeCase/snakeCase.ts
/**
* Changes the casing of a string to snake case.
* @param string The input string to change the casing of.
* @returns A new string with the casing changed to snake case.
* @example
* ```ts
* snakeCase('fooBar') // 'foo_bar'
* snakeCase('foo bar') // 'foo_bar'
* snakeCase('foo-bar') // 'foo_bar'
* snakeCase('fooBar42') // 'foo_bar42'
* ```
*/
function snakeCase(string) {
if (!/[a-z]+/i.test(string)) return string;
return string.replace(/[_-]+/g, " ").match(SNAKE_REGEX)?.map((x) => x.toLowerCase()).join("_");
}
const SNAKE_REGEX = /[A-Z]{2,}(?=[A-Z][a-z]+\d*|\b)|[A-Z]?[a-z]+\d*|[A-Z]|\d+/g;
//#endregion
export { snakeCase as t };
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