SVGStringList
The SVGStringList defines a list of DOMString objects.
interface SVGStringList {
[index: number]: string;
readonly length: number;
readonly numberOfItems: number;
[[Symbol.iterator]](): IterableIterator<string>;
appendItem(newItem: string): string;
clear(): void;
getItem(index: number): string;
initialize(newItem: string): string;
insertItemBefore(newItem: string, index: number): string;
removeItem(index: number): string;
replaceItem(newItem: string, index: number): string;
}var SVGStringList: {
prototype: SVGStringList;
new (): SVGStringList;
};