/**
 * This doesn't implement the http://www.w3.org/TR/2001/REC-xml-c14n-20010315 specification entirely. Currently it's just
 * good enough to work with xml invoices that align with below requirements (which should cover most of the cases).
 * At first, won't implement the complete specification considering that the SRI software doesn't need many XML features
 * that the specification supports. In the future, if really needed, a complete canonicalization may be implemented.
 *
 * The requirements for the input invoice XML are (none of these are needed to interchange XML data with the):
 * - The invoice to sign should consist of the 'factura' node and its children (e.g. <?xml version="1.0" encoding="UTF-8"?><factura Id="comprobante">...</factura>).
 *   The document declaration (i.e. <?xml version="1.0" encoding="UTF-8"?>) is optional.
 * - The invoice should be utf-8 encoded.
 * - No namespaces.
 * - No DOCTYPE entities.
 * - No Document type definition (DTD) tags.
 * - No xml-prefixed attributes (xml:<attr_name>).
 *
 * Canonicalization based on:
 * - https://www.w3.org/TR/xml-c14n
 * - https://www.di-mgt.com.au/xmldsig-c14n.html
 */
interface Namespace {
    prefix?: string;
    uri: string;
}
declare const c14nCanonicalize: (xml: string, options?: {
    inheritedNamespaces: Namespace[];
}) => string;
export { c14nCanonicalize };