util-helpers/lib/formatMoney.js

一个基于业务场景的工具方法库

'use strict';

var tslib = require('tslib');
var ut2 = require('ut2');
var math_util = require('./utils/math.util.js');
var devWarn = require('./utils/devWarn.js');
var isValidNumber = require('./isValidNumber.js');

function checkNumber(num) {
    if (!isValidNumber(num)) {
        devWarn("".concat(num, " invalid parameter."));
        return false;
    }
    if (typeof num === 'number') {
        math_util.checkBoundary(num);
    }
    return true;
}
function formatInt(intStr, thousand) {
    var txt = '';
    intStr = math_util.trimLeftZero(intStr);
    intStr = intStr[0] === '+' ? intStr.substring(1) : intStr;
    var negativeSymbol = Number(intStr) < 0 ? '-' : '';
    var reArr = negativeSymbol ? intStr.substring(1).split('').reverse() : intStr.split('').reverse();
    for (var i = 0; i < reArr.length; i++) {
        txt += reArr[i] + ((i + 1) % 3 === 0 && i + 1 !== reArr.length ? thousand : '');
    }
    return negativeSymbol + txt.split('').reverse().join('');
}
function formatDec(decStr, precision, decimal) {
    if (precision === 0) {
        return '';
    }
    var zero = 0;
    var ret = '';
    if (decStr && Number(decStr) > 0) {
        var tmpNum = parseFloat('0.' + decStr);
        ret = tmpNum.toFixed(precision).substring(2);
    }
    else {
        ret = zero.toFixed(precision).substring(2);
    }
    return decimal + ret;
}
var formatMoney = function (num, options) {
    if (options === void 0) { options = {}; }
    var _a = options.precision, precision = _a === void 0 ? 2 : _a, symbol = options.symbol, _b = options.thousand, thousand = _b === void 0 ? ',' : _b, _c = options.decimal, decimal = _c === void 0 ? '.' : _c, _d = options.strict, strict = _d === void 0 ? true : _d;
    if (!checkNumber(num) || (strict && (!ut2.isString(num) || num === '') && !ut2.isNumber(num))) {
        return '';
    }
    if (typeof num === 'number' && !isFinite(num)) {
        return num + '';
    }
    if (typeof precision !== 'number' || ut2.isNaN(precision) || precision < 0) {
        precision = 2;
    }
    else if (precision > 10) {
        precision = 10;
    }
    symbol = typeof symbol === 'string' ? symbol : '';
    thousand = typeof thousand === 'string' ? thousand : ',';
    decimal = typeof decimal === 'string' ? decimal : '.';
    var strNum = math_util.transformEffectiveNumber(num) + '';
    var _e = tslib.__read(strNum.split('.'), 2), intStr = _e[0], decStr = _e[1];
    return symbol + formatInt(intStr, thousand) + formatDec(decStr, precision, decimal);
};

module.exports = formatMoney;