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- var toString = require('./toString');
- /** Used to generate unique IDs. */
- var idCounter = 0;
- /**
- * Generates a unique ID. If `prefix` is given, the ID is appended to it.
- *
- * @static
- * @since 0.1.0
- * @memberOf _
- * @category Util
- * @param {string} [prefix=''] The value to prefix the ID with.
- * @returns {string} Returns the unique ID.
- * @example
- *
- * _.uniqueId('contact_');
- * // => 'contact_104'
- *
- * _.uniqueId();
- * // => '105'
- */
- function uniqueId(prefix) {
- var id = ++idCounter;
- return toString(prefix) + id;
- }
- module.exports = uniqueId;
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