source: imaps-frontend/node_modules/es-abstract/2017/CharacterRange.js@ d565449

'use strict';

var GetIntrinsic = require('get-intrinsic');
var callBound = require('call-bind/callBound');

var $fromCharCode = GetIntrinsic('%String.fromCharCode%');
var $TypeError = require('es-errors/type');
var $charCodeAt = callBound('String.prototype.charCodeAt');
var $push = callBound('Array.prototype.push');

module.exports = function CharacterRange(A, B) {
        if (A.length !== 1 || B.length !== 1) {
                throw new $TypeError('Assertion failed: CharSets A and B contain exactly one character');
        }

        var a = A[0];
        var b = B[0];

        var i = $charCodeAt(a, 0);
        var j = $charCodeAt(b, 0);

        if (!(i <= j)) {
                throw new $TypeError('Assertion failed: i is not <= j');
        }

        var arr = [];
        for (var k = i; k <= j; k += 1) {
                $push(arr, $fromCharCode(k));
        }
        return arr;
};