src/vs/editor/browser/viewParts/lines/viewLine.ts/DomReadingContext/constructor
class DomReadingContext:	constructor(domNode: HTMLElement, endNode: HTMLElement) {
		this._domNode = domNode;
		this._clientRectDeltaLeft = 0;
		this._clientRectScale = 1;
		this._clientRectRead = false;
		this.endNode = endNode;
	}