Interface Diagnostics

interface Diagnostics {
    add(diagnostic: Diagnostic): void;
    clear(file?: string): void;
    error(source: Node<tsc.Node> | Product, message: string): void;
    getAll(file?: string): Diagnostic[];
    getErrors(file?: string): Diagnostic[];
    getWarnings(file?: string): Diagnostic[];
    hasErrors(file?: string): boolean;
    hint(source: Node<tsc.Node> | Product, message: string): void;
    info(source: Node<tsc.Node> | Product, message: string): void;
    warn(source: Node<tsc.Node> | Product, message: string): void;
}