Sha256: fffac29ac78a3890acf0675ee324f7c1d72d28497975b82a73c028971b0b1cee
Contents?: true
Size: 999 Bytes
Versions: 12
Compression:
Stored size: 999 Bytes
Contents
'use strict';
var $ = require('../internals/export');
var toLength = require('../internals/to-length');
var notARegExp = require('../internals/not-a-regexp');
var requireObjectCoercible = require('../internals/require-object-coercible');
var correctIsRegExpLogic = require('../internals/correct-is-regexp-logic');
var nativeStartsWith = ''.startsWith;
var min = Math.min;
// `String.prototype.startsWith` method
// https://tc39.github.io/ecma262/#sec-string.prototype.startswith
$({ target: 'String', proto: true, forced: !correctIsRegExpLogic('startsWith') }, {
startsWith: function startsWith(searchString /* , position = 0 */) {
var that = String(requireObjectCoercible(this));
notARegExp(searchString);
var index = toLength(min(arguments.length > 1 ? arguments[1] : undefined, that.length));
var search = String(searchString);
return nativeStartsWith
? nativeStartsWith.call(that, search, index)
: that.slice(index, index + search.length) === search;
}
});
Version data entries
12 entries across 12 versions & 4 rubygems