@marchingy/lunar/lib/umd/tool.js

Chinese calendar with the 24 solar terms.

(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define(["require", "exports"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.printDebug = exports.sameDate = exports.compareDate = exports.coerceInteger = exports.isNumberValue = exports.toPrecision = void 0;
    function toPrecision(value, precision) {
        const p = Math.pow(10, precision);
        return Math.round(value * p) / p;
    }
    exports.toPrecision = toPrecision;
    /**
     * Whether the provided value is considered a number.
     * @docs-private
     */
    function isNumberValue(value) {
        // parseFloat(value) handles most of the cases we're interested in (it treats null, empty string,
        // and other non-number values as NaN, where Number just uses 0) but it considers the string
        // '123hello' to be a valid number. Therefore we also check if Number(value) is NaN.
        return !isNaN(parseFloat(value)) && !isNaN(Number(value));
    }
    exports.isNumberValue = isNumberValue;
    function coerceInteger(value, fallbackValue = 0) {
        return isNumberValue(value) ? (value > 0 ? Math.floor(value) : Math.ceil(value)) : fallbackValue;
    }
    exports.coerceInteger = coerceInteger;
    /**
     * Compares two dates.
     * @param first The first date to compare.
     * @param second The second date to compare.
     * @returns 0 if the dates are equal, a number less than 0 if the first date is earlier,
     *     a number greater than 0 if the first date is later.
     */
    function compareDate(first, second) {
        return (first.getFullYear() - second.getFullYear() ||
            first.getMonth() - second.getMonth() ||
            first.getDate() - second.getDate());
    }
    exports.compareDate = compareDate;
    /**
     * Checks if two dates are equal.
     * @param first The first date to check.
     * @param second The second date to check.
     * @returns Whether the two dates are equal.
     *     Null dates are considered equal to other null dates.
     */
    function sameDate(first, second) {
        if (first && second) {
            return !compareDate(first, second);
        }
        return first == second;
    }
    exports.sameDate = sameDate;
    function printDebug(fun, on) {
        on && console.info(typeof fun === 'function' ? fun() : fun);
    }
    exports.printDebug = printDebug;
});