@cainiaofe/cn-utils/es/common/type.js

菜鸟前端基础工具库

/**
 * Gets the `toStringTag` of `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the `toStringTag`.
 */
import { extname } from 'path-browserify';
import { imageExtensions } from './const';
function getTag(value) {
    if (value == null) {
        return value === undefined ? '[object Undefined]' : '[object Null]';
    }
    return Object.prototype.toString.call(value);
}
export var isObjectLike = function (value) {
    return typeof value === 'object' && value !== null;
};
export var isNumber = function (value) {
    return typeof value === 'number' || (isObjectLike(value) && getTag(value) == '[object Number]');
};
export var isNaN = function (value) {
    return isNumber(value) && value != +value;
};
export var isPlainObject = function (value) {
    if (!isObjectLike(value) || getTag(value) != '[object Object]') {
        return false;
    }
    if (Object.getPrototypeOf(value) === null) {
        return true;
    }
    var proto = value;
    while (Object.getPrototypeOf(proto) !== null) {
        proto = Object.getPrototypeOf(proto);
    }
    return Object.getPrototypeOf(value) === proto;
};
export var isError = function (value) {
    if (!isObjectLike(value)) {
        return false;
    }
    var tag = getTag(value);
    return (tag == '[object Error]' ||
        tag == '[object DOMException]' ||
        (typeof value.message === 'string' && typeof value.name === 'string' && !isPlainObject(value)));
};
export var isObject = function (value) {
    var type = typeof value;
    return value != null && (type === 'object' || type === 'function');
};
export var isImage = function (filePath) { return imageExtensions.has(extname(filePath).slice(1).toLowerCase()); };
/**
 *判断 timestamp 是否合法
 * @param timestamp 时间戳
 * @returns
 */
export var isValidTimestamp = function (timestamp) {
    // 检查是否是数字
    if (typeof timestamp !== 'number' || isNaN(timestamp)) {
        return false;
    }
    // 检查是否大于0
    if (timestamp <= 0) {
        return false;
    }
    // 创建日期对象并验证其有效性
    var date = new Date(timestamp);
    return date instanceof Date && !isNaN(date.getTime());
};