src/vs/base/common/scrollable.ts/SmoothScrollingOperation/_initAnimations
class SmoothScrollingOperation:	private _initAnimations(): void {
		this.scrollLeft = this._initAnimation(this.from.scrollLeft, this.to.scrollLeft, this.to.width);
		this.scrollTop = this._initAnimation(this.from.scrollTop, this.to.scrollTop, this.to.height);
	}