e-oz

// If you use some "CSS reset" (Tailwind, Bootstrap, 
// modern-normalize...), then mat-icon inside the
// Angular Material mat-icon-button will not be centered
// correctly - it will be shifted 2 pixels down.
// Here is the fix:
.mdc-icon-button {
  display: flex !important;
  flex-flow: row;
  align-items: center;
}

e-oz

import { isDevMode } from '@angular/core';

const singletons = new Set<symbol>();

export function singletonOnly(unique: symbol) {
  if (!isDevMode() || typeof window === 'undefined') {
    return;
  }
  if (singletons.has(unique)) {
    const msg = unique.toString() + ' MUST BE A SINGLETON! It was instantiated more than once.';

e-oz

import { computed, type Injector, isSignal, signal, type Signal, untracked } from '@angular/core';
import { toSignal } from '@angular/core/rxjs-interop';
import { AbstractControl } from '@angular/forms';
import { startWith } from 'rxjs';

/**
 * Returns a signal that contains the value of a control (or a form).
 * @param control
 * @param injector
 */