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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/es-abstract/2017

Просмотр файла: CharacterRange.js

'use strict';

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

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

var CharSet = require('../helpers/CharSet').CharSet;

module.exports = function CharacterRange(A, B) {
	var a;
	var b;

	if (A instanceof CharSet || B instanceof CharSet) {
		if (!(A instanceof CharSet) || !(B instanceof CharSet)) {
			throw new $TypeError('Assertion failed: CharSets A and B are not both CharSets');
		}

		A.yield(function (c) {
			if (typeof a !== 'undefined') {
				throw new $TypeError('Assertion failed: CharSet A has more than one character');
			}
			a = c;
		});
		B.yield(function (c) {
			if (typeof b !== 'undefined') {
				throw new $TypeError('Assertion failed: CharSet B has more than one character');
			}
			b = c;
		});
	} else {
		if (A.length !== 1 || B.length !== 1) {
			throw new $TypeError('Assertion failed: CharSets A and B contain exactly one character');
		}
		a = A[0];
		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) {
		arr[arr.length] = $fromCharCode(k);
	}
	return arr;
};

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