This commit is contained in:
68
node_modules/core-js/modules/esnext.number.from-string.js
generated
vendored
Normal file
68
node_modules/core-js/modules/esnext.number.from-string.js
generated
vendored
Normal file
@@ -0,0 +1,68 @@
|
||||
'use strict';
|
||||
var $ = require('../internals/export');
|
||||
var uncurryThis = require('../internals/function-uncurry-this');
|
||||
var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');
|
||||
|
||||
var INVALID_NUMBER_REPRESENTATION = 'Invalid number representation';
|
||||
var INVALID_RADIX = 'Invalid radix';
|
||||
var $RangeError = RangeError;
|
||||
var $SyntaxError = SyntaxError;
|
||||
var $TypeError = TypeError;
|
||||
var $parseInt = parseInt;
|
||||
var pow = Math.pow;
|
||||
var valid = /^[0-9a-z]+(\.[0-9a-z]+)?$/;
|
||||
var charAt = uncurryThis(''.charAt);
|
||||
var charCodeAt = uncurryThis(''.charCodeAt);
|
||||
var exec = uncurryThis(valid.exec);
|
||||
var numberToString = uncurryThis(1.1.toString);
|
||||
var stringSlice = uncurryThis(''.slice);
|
||||
var split = uncurryThis(''.split);
|
||||
|
||||
var validDigitForRadix = function (string, R) {
|
||||
for (var i = 0; i < string.length; i++) {
|
||||
var code = charCodeAt(string, i);
|
||||
// '.' is allowed
|
||||
if (code === 0x2E) continue;
|
||||
// '0'-'9' - digit value 0-9
|
||||
if (code >= 0x30 && code <= 0x39) {
|
||||
if (code - 0x30 >= R) return false;
|
||||
// 'a'-'z' - digit value 10-35
|
||||
} else if (code >= 0x61 && code <= 0x7A) {
|
||||
if (code - 0x61 + 10 >= R) return false;
|
||||
} else return false;
|
||||
}
|
||||
return true;
|
||||
};
|
||||
|
||||
// `Number.fromString` method
|
||||
// https://github.com/tc39/proposal-number-fromstring
|
||||
$({ target: 'Number', stat: true, forced: true }, {
|
||||
fromString: function fromString(string, radix) {
|
||||
var sign = 1;
|
||||
if (typeof string != 'string') throw new $TypeError(INVALID_NUMBER_REPRESENTATION);
|
||||
if (!string.length) throw new $SyntaxError(INVALID_NUMBER_REPRESENTATION);
|
||||
if (charAt(string, 0) === '-') {
|
||||
sign = -1;
|
||||
string = stringSlice(string, 1);
|
||||
if (!string.length) throw new $SyntaxError(INVALID_NUMBER_REPRESENTATION);
|
||||
}
|
||||
var R = radix === undefined ? 10 : toIntegerOrInfinity(radix);
|
||||
if (R < 2 || R > 36) throw new $RangeError(INVALID_RADIX);
|
||||
if (!exec(valid, string) || !validDigitForRadix(string, R)) throw new $SyntaxError(INVALID_NUMBER_REPRESENTATION);
|
||||
var parts = split(string, '.');
|
||||
var mathNum = $parseInt(parts[0], R);
|
||||
if (parts.length > 1) mathNum += $parseInt(parts[1], R) / pow(R, parts[1].length);
|
||||
if (R === 10) {
|
||||
var compareString = string;
|
||||
if (parts.length > 1) {
|
||||
var fraction = parts[1];
|
||||
while (fraction.length && charAt(fraction, fraction.length - 1) === '0') {
|
||||
fraction = stringSlice(fraction, 0, -1);
|
||||
}
|
||||
compareString = fraction.length ? parts[0] + '.' + fraction : parts[0];
|
||||
}
|
||||
if (numberToString(mathNum, R) !== compareString) throw new $SyntaxError(INVALID_NUMBER_REPRESENTATION);
|
||||
}
|
||||
return sign * mathNum;
|
||||
}
|
||||
});
|
||||
Reference in New Issue
Block a user