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writeValue gets called before ngOnInit#29218

Description

@romansattler

馃悶 bug report

Affected Package

The issue is caused by package `@angular/forms`

Is this a regression?

I don't know. I don't think so.

Description

When NgControl is injected into the constructor of a component and the value accessor is set manually to avoid cyclic dependency errors, writeValue is called before ngOnInit.
This workaround is suggested by the Material Angular doc under ngControl.

馃敩 Minimal Reproduction

Stackblitz

馃實 Your Environment

Angular Version:


Angular CLI: 7.3.5
Node: 11.9.0
OS: win32 x64
Angular: 7.2.8
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router, service-worker

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.13.5
@angular-devkit/build-angular     0.13.5
@angular-devkit/build-optimizer   0.13.5
@angular-devkit/build-webpack     0.13.5
@angular-devkit/core              7.3.5
@angular-devkit/schematics        7.3.5
@angular/cdk                      7.3.3
@angular/cli                      7.3.5
@angular/material                 7.3.3
@angular/pwa                      0.13.5
@ngtools/webpack                  7.3.5
@schematics/angular               7.3.5
@schematics/update                0.13.5
rxjs                              6.4.0
typescript                        3.2.4
webpack                           4.29.0

Anything else relevant?

I was sent here by the @angular/material2 team. They believe it's an issue with @angular/forms.
angular/components#15434

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