Method _updateTrackUI

src/material/slider/slider.ts:814–822

Updates the scale on the active portion of the track.

(source: _MatSliderThumb)

  /** Updates the scale on the active portion of the track. */
  _updateTrackUI(source: _MatSliderThumb): void {
    if (this._skipUpdate()) {
      return;
    }

    this._isRange
      ? this._updateTrackUIRange(source as _MatSliderRangeThumb)
      : this._updateTrackUINonRange(source as _MatSliderThumb);
  }

  private _updateTrackUIRange(source: _MatSliderRangeThumb): void {
    const sibling = source.getSibling();