lodash/lang/isFinite.js

var isNative = require('./isNative');

/* Native method references for those with the same name as other `lodash` methods. */
var nativeIsFinite = global.isFinite,
    nativeNumIsFinite = isNative(nativeNumIsFinite = Number.isFinite) && nativeNumIsFinite;

/**
 * Checks if `value` is a finite primitive number.
 *
 * **Note:** This method is based on ES `Number.isFinite`. See the
 * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.isfinite)
 * for more details.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
 * @example
 *
 * _.isFinite(10);
 * // => true
 *
 * _.isFinite('10');
 * // => false
 *
 * _.isFinite(true);
 * // => false
 *
 * _.isFinite(Object(10));
 * // => false
 *
 * _.isFinite(Infinity);
 * // => false
 */
var isFinite = nativeNumIsFinite || function(value) {
  return typeof value == 'number' && nativeIsFinite(value);
};

module.exports = isFinite;