| 'use strict'; |
| |
| /** |
| * Checks if the value is a boolean or a Boolean object. |
| * @param {unknown} value |
| * @returns {value is boolean} |
| */ |
| function isBoolean(value) { |
| return typeof value === 'boolean' || value instanceof Boolean; |
| } |
| |
| /** |
| * Checks if the value is a number or a Number object. |
| * @param {unknown} value |
| * @returns {value is number} |
| */ |
| function isNumber(value) { |
| return typeof value === 'number' || value instanceof Number; |
| } |
| |
| /** |
| * Checks if the value is a RegExp object. |
| * @param {unknown} value |
| * @returns {value is RegExp} |
| */ |
| function isRegExp(value) { |
| return value instanceof RegExp; |
| } |
| |
| /** |
| * Checks if the value is a string or a String object. |
| * @param {unknown} value |
| * @returns {value is string} |
| */ |
| function isString(value) { |
| return typeof value === 'string' || value instanceof String; |
| } |
| |
| module.exports = { |
| isBoolean, |
| isNumber, |
| isRegExp, |
| isString, |
| }; |