voca/es/camel_case.js

The ultimate JavaScript string library

import './internal/is_nil.js';
import './internal/coerce_to_boolean.js';
import './is_string.js';
import { c as coerceToString } from './internal/coerce_to_string.js';
import capitalize from './capitalize.js';
import lowerCase from './lower_case.js';
import './internal/const.js';
import './internal/const_extended.js';
import './internal/nil_default.js';
import './internal/to_string.js';
import words from './words.js';

/**
 * Transforms the `word` into camel case chunk.
 *
 * @param  {string} word  The word string
 * @param  {number} index The index of the word in phrase.
 * @return {string}       The transformed word.
 * @ignore
 */

function wordToCamel(word, index) {
  return index === 0 ? lowerCase(word) : capitalize(word, true);
}
/**
 * Converts the `subject` to <a href="https://en.wikipedia.org/wiki/CamelCase">camel case</a>.
 *
 * @function camelCase
 * @static
 * @since 1.0.0
 * @memberOf Case
 * @param  {string} [subject=''] The string to convert to camel case.
 * @return {string}              The camel case string.
 * @example
 * v.camelCase('bird flight');
 * // => 'birdFlight'
 *
 * v.camelCase('BirdFlight');
 * // => 'birdFlight'
 *
 * v.camelCase('-BIRD-FLIGHT-');
 * // => 'birdFlight'
 */


function camelCase(subject) {
  var subjectString = coerceToString(subject);

  if (subjectString === '') {
    return '';
  }

  return words(subjectString).map(wordToCamel).join('');
}

export default camelCase;