Select Close to throw a redirect error

[tangdaohai]

What problem does this feature solve?

when router has redirect I got this error: Redirected when going from "/a" to "/b" via a navigation guard.

I found this line of code(199-200):

vue-router/src/history/base.js

Lines 194 to 209 in b0ef497

	} else if (
	typeof to === 'string' ||
	(typeof to === 'object' &&
	(typeof to.path === 'string' || typeof to.name === 'string'))
	) {
	// next('/') or next({ path: '/' }) -> redirect
	abort(createNavigationRedirectedError(current, route))
	if (typeof to === 'object' && to.replace) {
	this.replace(to)
	} else {
	this.push(to)
	}
	} else {
	// confirm transition and pass on the value
	next(to)
	}

Redirection is a commonly used function, I think that this error should not be thrown frequently or provide a function to choose whether to throw an error.

By the way, why should this exception be thrown, and what is its purpose?

I use Google Translate, which may cause difficulty in understanding...

What does the proposed API look like?

// like this
interface NavigationGuardOptions {
  throwError: boolean
}
export type NavigationGuardNext<V extends Vue = Vue> = (
  to?: RawLocation | false | ((vm: V) => any) | void,
  options: NavigationGuardOptions
) => void

[posva]

This has been extensively explained at #2881 (comment) where it explains how to adapt the behavior. There is also an upcoming PR #3220 to add the necessary API to handle this correctly

To make it short, it always was considered an error before, so with Promises, it had to be a rejection (see example using 3.0.0 https://jsfiddle.net/zoh1dj6w/). This is no longer the case in v4, where navigation failures are not promise rejections anymore and a redirection is considered a successful navigation but changing it on v3 would be a breaking change so it only changed on v4

[tangdaohai]

This has been extensively explained at #2881 (comment)

To make it short, it always was considered an error before, so with Promises, it had to be a rejection (see example using 3.0.0 https://jsfiddle.net/zoh1dj6w/). This is no longer the case in v4, where navigation failures are not promise rejections anymore and a redirection is considered a successful navigation

thanks.