Blog

Material Form Components: mat-form-field, matInput, mat-select, mat-autocomplete and mat-datepicker

mat-error only appears once a field is touched or after submit because of the default ErrorStateMatcher; with Signal Forms the ShowOnDirty matcher never shows the error of an empty required field. On Bookstore's institutional order form we measure an empty-looking mat-select without compareWith, debounce cutting 8 requests to 1, the native date adapter reading 05.12.2026 as 12 May, Turkish dates with date-fns and 15 December shifting to the 14th in UTC.