Edit File: substring.js
'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); };
Back to File Manager