import { DomReplaceCommand, DomReplacer } from "ssg-api";
import { HtmlRR0Context } from "../RR0Context.js";
import { RR0Messages } from "../lang/RR0Messages.js";
type UnitConverter = (messages: RR0Messages["unit"], value: number) => string;
/**
 * Converts schema.org quantitative values (`<span itemscope itemtype="https://schema.org/QuantitativeValue">`)
 * expressed in Anglo-Saxon units into metric ones.
 */
export declare class UnitReplaceCommand extends DomReplaceCommand {
    /**
     * Converters by UN/CEFACT unit code.
     */
    static readonly converters: Record<string, UnitConverter>;
    constructor();
    /**
     * @param text The value as written, with a dot or a comma as decimal mark.
     */
    static parseValue(text: string): number;
    protected createReplacer(context: HtmlRR0Context): Promise<DomReplacer>;
}
export {};