ut2/lib/isError.js

一个现代 JavaScript 实用工具库。[点击查看在线文档]。

'use strict';

var getTag = require('./internals/getTag.js');
var native = require('./internals/native.js');
var isObjectLike = require('./isObjectLike.js');

function isError(value) {
    if (!isObjectLike(value)) {
        return false;
    }
    if (value instanceof Error) {
        return true;
    }
    var tag = getTag(value);
    return tag === native.errorTag || tag === native.domExceptionTag;
}

module.exports = isError;