src/vs/editor/common/config/editorOptions.ts/EditorFontSize/constructor
class EditorFontSize:	constructor() {
		super(
			EditorOption.fontSize, 'fontSize', EDITOR_FONT_DEFAULTS.fontSize,
			{
				type: 'number',
				minimum: 6,
				maximum: 100,
				default: EDITOR_FONT_DEFAULTS.fontSize,
				description: nls.localize('fontSize', "Controls the font size in pixels.")
			}
		);
	}