refactor start

home/ags/node_modules/es-abstract/2024/CodePointAt.js

@@ -1,55 +0,0 @@
-'use strict';
-
-var $TypeError = require('es-errors/type');
-var callBound = require('call-bind/callBound');
-var isLeadingSurrogate = require('../helpers/isLeadingSurrogate');
-var isTrailingSurrogate = require('../helpers/isTrailingSurrogate');
-
-var UTF16SurrogatePairToCodePoint = require('./UTF16SurrogatePairToCodePoint');
-
-var $charAt = callBound('String.prototype.charAt');
-var $charCodeAt = callBound('String.prototype.charCodeAt');
-
-// https://262.ecma-international.org/12.0/#sec-codepointat
-
-module.exports = function CodePointAt(string, position) {
-	if (typeof string !== 'string') {
-		throw new $TypeError('Assertion failed: `string` must be a String');
-	}
-	var size = string.length;
-	if (position < 0 || position >= size) {
-		throw new $TypeError('Assertion failed: `position` must be >= 0, and < the length of `string`');
-	}
-	var first = $charCodeAt(string, position);
-	var cp = $charAt(string, position);
-	var firstIsLeading = isLeadingSurrogate(first);
-	var firstIsTrailing = isTrailingSurrogate(first);
-	if (!firstIsLeading && !firstIsTrailing) {
-		return {
-			'[[CodePoint]]': cp,
-			'[[CodeUnitCount]]': 1,
-			'[[IsUnpairedSurrogate]]': false
-		};
-	}
-	if (firstIsTrailing || (position + 1 === size)) {
-		return {
-			'[[CodePoint]]': cp,
-			'[[CodeUnitCount]]': 1,
-			'[[IsUnpairedSurrogate]]': true
-		};
-	}
-	var second = $charCodeAt(string, position + 1);
-	if (!isTrailingSurrogate(second)) {
-		return {
-			'[[CodePoint]]': cp,
-			'[[CodeUnitCount]]': 1,
-			'[[IsUnpairedSurrogate]]': true
-		};
-	}
-
-	return {
-		'[[CodePoint]]': UTF16SurrogatePairToCodePoint(first, second),
-		'[[CodeUnitCount]]': 2,
-		'[[IsUnpairedSurrogate]]': false
-	};
-};