replaceUrl doesn't works when using relativeTo

🐞 bug report

Affected Package

The issue is caused by package @angular/router

Is this a regression?

Don't know but doesn't works in any minor version of 7

Description

New state is pushed in history.

When this works fine:

this.router.navigate(['/login'], { queryParams: {}, replaceUrl: true});

This doesn’t work as expected:

this.router.navigate(['.'], { relativeTo: this.route, queryParams: {}, replaceUrl: true});
or
this.router.navigate([''], { relativeTo: this.route, queryParams: {}, replaceUrl: true});

Workaround:

this.router.navigate([this.router.url.split('?')[0]], { queryParams: {}, replaceUrl: true });

🔬 Minimal Reproduction

https://stackblitz.com/edit/angular-wshy3c Test url https://angular-wshy3c.stackblitz.io/login?bob=coucou

In stackblitz there is an other error: replaceUrl works but not relativeTo

🔥 Exception or Error

No errors in console

🌍 Your Environment

Angular Version: Also tried in 7.2.15

Angular CLI: 7.1.4
Node: 10.7.0
OS: darwin x64
Angular: 7.1.4
... animations, cli, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.11.4
@angular-devkit/build-angular     0.11.4
@angular-devkit/build-optimizer   0.11.4
@angular-devkit/build-webpack     0.11.4
@angular-devkit/core              7.1.4
@angular-devkit/schematics        7.1.4
@angular/router                   7.1.4
@ngtools/webpack                  7.1.4
@schematics/angular               7.1.4
@schematics/update                0.11.4
rxjs                              6.3.3
typescript                        3.1.6
webpack                           4.23.1

Anything else relevant?

[atscott]

@gilsdav - Note that you can use this.router.navigate([], { queryParams: {}, replaceUrl: true}); for your case. When the commands array is empty, the router will use the currentUrlTree as the basis for navigation https://stackblitz.com/edit/angular-vxxtul https://github.com/angular/angular/blob/1237d9cbea39da36dfedc884ae36c12a04addd85/packages/router/src/create_url_tree.ts#L17-L18

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