defaultTo.js (608B)
1 /** 2 * Checks `value` to determine whether a default value should be returned in 3 * its place. The `defaultValue` is returned if `value` is `NaN`, `null`, 4 * or `undefined`. 5 * 6 * @static 7 * @memberOf _ 8 * @since 4.14.0 9 * @category Util 10 * @param {*} value The value to check. 11 * @param {*} defaultValue The default value. 12 * @returns {*} Returns the resolved value. 13 * @example 14 * 15 * _.defaultTo(1, 10); 16 * // => 1 17 * 18 * _.defaultTo(undefined, 10); 19 * // => 10 20 */ 21 function defaultTo(value, defaultValue) { 22 return (value == null || value !== value) ? defaultValue : value; 23 } 24 25 module.exports = defaultTo;