ferngully-aurelia-tools/dist/amd/services/number-service.js

Ferngully Tools for Aurelia

define(["require", "exports", "numeral"], function (require, exports, numeral) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    var NumberService = (function () {
        function NumberService() {
        }
        NumberService.prototype.toString = function (value, format) {
            if (typeof (value) === 'string') {
                return value;
            }
            if (Number.isNaN(value)) {
                return null;
            }
            return numeral(value).format(format);
        };
        NumberService.prototype.fromString = function (value, decimalPlaces) {
            if (decimalPlaces === void 0) { decimalPlaces = 1000; }
            if (!this.stringIsNumber(value, decimalPlaces)) {
                return value;
            }
            return numeral(value).value();
        };
        NumberService.prototype.stringIsNumber = function (value, decimalPlaces) {
            if (decimalPlaces === void 0) { decimalPlaces = 1000; }
            if (typeof value === "number")
                return true;
            if ((value === null) || (value === undefined))
                return false;
            value = value.trim();
            var regex = new RegExp(this.getNumberRegexString(decimalPlaces));
            return regex.test(value);
        };
        NumberService.prototype.getNumberRegexString = function (decimalPlaces) {
            if (decimalPlaces === void 0) { decimalPlaces = 0; }
            return (decimalPlaces !== 0) ?
                "^[+|-]?(((\\d{1,3}\\,)((\\d{3}\\,)?)(\\d{3}(\\.\\d{0," + decimalPlaces + "})?))|(\\d{1,})|(\\d{0,}(\\.\\d{0," + decimalPlaces + "})))$" :
                "^[+|-]?(((\\d{1,3}\\,)((\\d{3}\\,)?)(\\d{3}))|(\\d{1,}))$";
        };
        NumberService.prototype.round = function (value, decimals, type) {
            return type === RoundingType.Bankers ? this.roundBankers(value, decimals) : this.roundHalfUp(value, decimals);
        };
        NumberService.prototype.roundForSalesTax = function (value) {
            return this.roundHalfUp(value, 2);
        };
        NumberService.prototype.roundHalfUp = function (value, decimals) {
            return ((value !== null) && (value !== undefined)) ? this._halfUpRound(value, decimals) : value;
        };
        NumberService.prototype.roundBankers = function (value, decimals) {
            return ((value !== null) && (value !== undefined)) ? this._bankersRound(value, decimals) : value;
        };
        NumberService.prototype._bankersRound = function (num, decimals) {
            var d = decimals || 0;
            var m = Math.pow(10, d);
            var n = +(d ? num * m : num).toFixed(8);
            var i = Math.floor(n), f = n - i;
            var e = 1e-8;
            var r = (f > 0.5 - e && f < 0.5 + e) ? ((i % 2 === 0) ? i : i + 1) : Math.round(n);
            return d ? r / m : r;
        };
        NumberService.prototype._halfUpRound = function (num, decimals) {
            var pow = Math.pow(10, (decimals) ? Math.abs(decimals) : 0);
            return Math.round(num * pow) / pow;
        };
        return NumberService;
    }());
    exports.NumberService = NumberService;
    var RoundingType;
    (function (RoundingType) {
        RoundingType[RoundingType["Bankers"] = 1] = "Bankers";
        RoundingType[RoundingType["HalfUp"] = 2] = "HalfUp";
    })(RoundingType = exports.RoundingType || (exports.RoundingType = {}));
});
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