legends810/testingnew

1/**2 * Copyright (c) 2018 Jed Watson.3 * Licensed under the MIT License (MIT), see:4 *5 * @link http://jedwatson.github.io/classnames6 */7 8type ClassNamesArg = undefined | string | Record<string, boolean> | ClassNamesArg[];9 10/**11 * A simple JavaScript utility for conditionally joining classNames together.12 *13 * @param args A series of classes or object with key that are class and values14 * that are interpreted as boolean to decide whether or not the class15 * should be included in the final class.16 */17export function classNames(...args: ClassNamesArg[]): string {18  let classes = '';19 20  for (const arg of args) {21    classes = appendClass(classes, parseValue(arg));22  }23 24  return classes;25}26 27function parseValue(arg: ClassNamesArg) {28  if (typeof arg === 'string' || typeof arg === 'number') {29    return arg;30  }31 32  if (typeof arg !== 'object') {33    return '';34  }35 36  if (Array.isArray(arg)) {37    return classNames(...arg);38  }39 40  let classes = '';41 42  for (const key in arg) {43    if (arg[key]) {44      classes = appendClass(classes, key);45    }46  }47 48  return classes;49}50 51function appendClass(value: string, newClass: string | undefined) {52  if (!newClass) {53    return value;54  }55 56  if (value) {57    return value + ' ' + newClass;58  }59 60  return value + newClass;61}62