Function _validateInputs

src/material/slider/slider.ts:949–963

Ensures that there is not an invalid configuration for the slider thumb inputs.

(
  isRange: boolean,
  endInputElement: _MatSliderThumb | _MatSliderRangeThumb | undefined,
  startInputElement: _MatSliderThumb | undefined,
)

/** Ensures that there is not an invalid configuration for the slider thumb inputs. */
function _validateInputs(
  isRange: boolean,
  endInputElement: _MatSliderThumb | _MatSliderRangeThumb | undefined,
  startInputElement: _MatSliderThumb | undefined,
): void {
  const startValid =
    !isRange || startInputElement?._hostElement.hasAttribute('matSliderStartThumb');
  const endValid = endInputElement?._hostElement.hasAttribute(
    isRange ? 'matSliderEndThumb' : 'matSliderThumb',
  );

  if (!startValid || !endValid) {
    _throwInvalidInputConfigurationError();
  }
}

function _throwInvalidInputConfigurationError(): void {
  throw Error(`Invalid slider thumb input configuration!