declare module 'xmllint' {
    interface ValidateXMLOptions {
        xml: string
        schema: string
        TOTAL_MEMORY?: number
    }

    interface ValidateXMLResult {
        errors?: string[]
    }

    const xmllint: {
        validateXML(options: ValidateXMLOptions): ValidateXMLResult | undefined
    }

    export = xmllint
}