javascript - 我可以使用'throw {}'并且堆栈跟踪正确吗？(Can I use 'throw {}' and stack trace is right in promise?)

Question

I tried two way as below(我尝试了以下两种方法)

new Promise((resolve, reject) => { reject() }) .catch(() => { throw { name: 'a', message: 'b' } }) new Promise((resolve, reject) => { reject() }) .catch(() => { throw new Error({ name: 'a', message: 'b' }); }) ' throw {} 'have a problem, is stack trace is not right(' throw {} '有问题，堆栈跟踪不正确) stack trace of the ' throw new Error() ' is right, but can't throw message as json(' throw new Error() '的堆栈跟踪是正确的，但是不能将消息作为json抛出) Can I use ' throw {} ' and stack trace is right?(我可以使用' throw {} '并且堆栈跟踪正确吗？)   ask by flyerH translate from so

Answer 1

The stack property only exists on Error objects.(stack属性仅存在于Error对象上。)

The first parameter of the Error constructor is a string though, so if you pass an object to it it'll be stringified.(但是， Error构造函数的第一个参数是字符串，因此，如果将对象传递给它，它将被字符串化。) You could do(你可以做) throw Object.assign(new Error("message"), { // properties }); to throw an error object with custom properties.(抛出带有自定义属性的错误对象。)