var root = require('./_root'), toString = require('./toString'); /** Used to match leading and trailing whitespace. */ var reTrim = /^\s+|\s+$/g; /** Used to detect hexadecimal string values. */ var reHasHexPrefix = /^0x/i; /* Built-in method references for those with the same name as other `lodash` methods. */ var nativeParseInt = root.parseInt; /** * Converts `string` to an integer of the specified radix. If `radix` is * `undefined` or `0`, a `radix` of `10` is used unless `value` is a * hexadecimal, in which case a `radix` of `16` is used. * * **Note:** This method aligns with the * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`. * * @static * @memberOf _ * @since 1.1.0 * @category String * @param {string} string The string to convert. * @param {number} [radix=10] The radix to interpret `value` by. * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. * @returns {number} Returns the converted integer. * @example * * _.parseInt('08'); * // => 8 * * _.map(['6', '08', '10'], _.parseInt); * // => [6, 8, 10] */ function parseInt(string, radix, guard) { // Chrome fails to trim leading whitespace characters. // See https://bugs.chromium.org/p/v8/issues/detail?id=3109 for more details. if (guard || radix == null) { radix = 0; } else if (radix) { radix = +radix; } string = toString(string).replace(reTrim, ''); return nativeParseInt(string, radix || (reHasHexPrefix.test(string) ? 16 : 10)); } module.exports = parseInt;