src/vs/editor/browser/config/fontMeasurements.ts/FontMeasurementsImpl/dispose
class FontMeasurementsImpl:	public override dispose(): void {
		if (this._evictUntrustedReadingsTimeout !== -1) {
			window.clearTimeout(this._evictUntrustedReadingsTimeout);
			this._evictUntrustedReadingsTimeout = -1;
		}
		super.dispose();
	}