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| /** Used to generate unique IDs. */ | |
| const idCounter = {} | |
| /** | |
| * Generates a unique ID. If `prefix` is given, the ID is appended to it. | |
| * | |
| * @since 0.1.0 | |
| * @category Util | |
| * @param {string} [prefix=''] The value to prefix the ID with. | |
| * @returns {string} Returns the unique ID. | |
| * @see random | |
| * @example | |
| * | |
| * uniqueId('contact_') | |
| * // => 'contact_104' | |
| * | |
| * uniqueId() | |
| * // => '105' | |
| */ | |
| function uniqueId(prefix='$lodash$') { | |
| if (!idCounter[prefix]) { | |
| idCounter[prefix] = 0 | |
| } | |
| const id =++idCounter[prefix] | |
| if (prefix === '$lodash$') { | |
| return `${id}` | |
| } | |
| return `${prefix}${id}` | |
| } | |
| export default uniqueId |