保誠-保戶業務員媒合平台
Tomas
2022-05-19 957a1f10a06fdbb76f1a0ba94fe44126c613fee3
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'use strict';
 
var GetIntrinsic = require('get-intrinsic');
 
var $TypeError = GetIntrinsic('%TypeError%');
 
var IsIntegralNumber = require('./IsIntegralNumber');
var Type = require('./Type');
 
var callBound = require('call-bind/callBound');
 
var $slice = callBound('String.prototype.slice');
 
// https://262.ecma-international.org/12.0/#substring
module.exports = function substring(S, inclusiveStart, exclusiveEnd) {
    if (Type(S) !== 'String' || !IsIntegralNumber(inclusiveStart) || (arguments.length > 2 && !IsIntegralNumber(exclusiveEnd))) {
        throw new $TypeError('`S` must be a String, and `inclusiveStart` and `exclusiveEnd` must be integers');
    }
    return $slice(S, inclusiveStart, arguments.length > 2 ? exclusiveEnd : S.length);
};