export function readBoolean(node: Node): boolean | undefined;
export function readBooleanString(string: string): boolean | undefined;
export function readDateTime(node: Node): number | undefined;
export function readDecimal(node: Node): number | undefined;
export function readDecimalString(string: string): number | undefined;
export function readNonNegativeInteger(node: Node): number | undefined;
export function readNonNegativeIntegerString(string: string): number | undefined;
export function readString(node: Node): string | undefined;
export function writeBooleanTextNode(node: Node, bool: boolean): void;
export function writeCDATASection(node: Node, string: string): void;
export function writeDateTimeTextNode(node: Node, dateTime: number): void;
export function writeDecimalTextNode(node: Node, decimal: number): void;
export function writeNonNegativeIntegerTextNode(node: Node, nonNegativeInteger: number): void;
export function writeStringTextNode(node: Node, string: string): void;