Function validateAdapter

src/material/timepicker/util.ts:110–141

(
  adapter: DateAdapter<unknown> | null,
  formats: MatDateFormats | null,
)

/** Checks whether a date adapter is set up correctly for use with the timepicker. */
export function validateAdapter(
  adapter: DateAdapter<unknown> | null,
  formats: MatDateFormats | null,
) {
  function missingAdapterError(provider: string) {
    return Error(
      `MatTimepicker: No provider found for ${provider}. You must add one of the following ` +
        `to your app config: provideNativeDateAdapter, provideDateFnsAdapter, ` +
        `provideLuxonDateAdapter, provideMomentDateAdapter, or provide a custom implementation.`,
    );
  }

  if (!adapter) {
    throw missingAdapterError('DateAdapter');
  }

  if (!formats) {
    throw missingAdapterError('MAT_DATE_FORMATS');
  }

  if (
    formats.display.timeInput === undefined ||
    formats.display.timeOptionLabel === undefined ||
    formats.parse.timeInput === undefined
  ) {
    throw new Error(
      'MatTimepicker: Incomplete `MAT_DATE_FORMATS` has been provided. ' +
        '`MAT_DATE_FORMATS` must provide `display.timeInput`, `display.timeOptionLabel` ' +
        'and `parse.timeInput` formats in order to be compatible with MatTimepicker.',
    );
  }
}