export var loadTimeData: LoadTimeData;
declare class LoadTimeData {
set data(arg: any);
valueExists(id: string): boolean;
getValue(id: string): any;
getString(id: string): string;
getStringF(id: string, ...args: Array<string|number>): string;
substituteString(label: string, ...args: Array<string|number>): string;
getSubstitutedStringPieces(label: string, ...args: Array<string|number>):
Array<{value: string, arg: (null|string)}>;
getBoolean(id: string): boolean;
getInteger(id: string): number;
overrideValues(replacements: any): void;
resetForTesting(newData?: any|null): void;
isInitialized(): boolean;
}