'use strict';
var $ = require('../internals/export');
-var toInteger = require('../internals/to-integer');
+var global = require('../internals/global');
+var uncurryThis = require('../internals/function-uncurry-this');
+var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');
var parseInt = require('../internals/number-parse-int');
var INVALID_NUMBER_REPRESENTATION = 'Invalid number representation';
var INVALID_RADIX = 'Invalid radix';
+var RangeError = global.RangeError;
+var SyntaxError = global.SyntaxError;
+var TypeError = global.TypeError;
var valid = /^[\da-z]+$/;
+var charAt = uncurryThis(''.charAt);
+var exec = uncurryThis(valid.exec);
+var numberToString = uncurryThis(1.0.toString);
+var stringSlice = uncurryThis(''.slice);
// `Number.fromString` method
// https://github.com/tc39/proposal-number-fromstring
var R, mathNum;
if (typeof string != 'string') throw TypeError(INVALID_NUMBER_REPRESENTATION);
if (!string.length) throw SyntaxError(INVALID_NUMBER_REPRESENTATION);
- if (string.charAt(0) == '-') {
+ if (charAt(string, 0) == '-') {
sign = -1;
- string = string.slice(1);
+ string = stringSlice(string, 1);
if (!string.length) throw SyntaxError(INVALID_NUMBER_REPRESENTATION);
}
- R = radix === undefined ? 10 : toInteger(radix);
+ R = radix === undefined ? 10 : toIntegerOrInfinity(radix);
if (R < 2 || R > 36) throw RangeError(INVALID_RADIX);
- if (!valid.test(string) || (mathNum = parseInt(string, R)).toString(R) !== string) {
+ if (!exec(valid, string) || numberToString(mathNum = parseInt(string, R), R) !== string) {
throw SyntaxError(INVALID_NUMBER_REPRESENTATION);
}
return sign * mathNum;