import { type MessageDateTime, type MessageFunctionContext, type MessageNumber } from 'messageformat/functions';
declare function currency(ctx: MessageFunctionContext, options: Record<string, unknown>, operand?: unknown): MessageNumber;
declare function datetime(ctx: MessageFunctionContext, options: Record<string, unknown>, operand?: unknown): MessageDateTime;
declare function duration(ctx: MessageFunctionContext, _options: unknown, operand?: unknown): {
    type: "mf1:duration";
    source: string;
    toParts: () => [{
        readonly type: "mf1:duration";
        readonly source: string;
        readonly value: string;
    }];
    toString: () => string;
    valueOf: () => number;
};
declare function number(ctx: MessageFunctionContext, options: Record<string, unknown>, operand?: unknown): MessageNumber;
declare function plural(ctx: MessageFunctionContext, options: Record<string, unknown>, operand?: unknown): MessageNumber;
declare function unit(ctx: MessageFunctionContext, options: Record<string, unknown>, operand?: unknown): MessageNumber;
/**
 * Function handlers for ICU MessageFormat 1.
 *
 * Used by {@link mf1ToMessage}.
 */
export declare let MF1Functions: {
    /**
     * A wrapper around {@link DraftFunctions.currency},
     * used for formatting a `number, currency` and `number, ::currency` placeholder.
     */
    'mf1:currency': typeof currency;
    /**
     * A wrapper around {@link DraftFunctions.datetime},
     * used for formatting `date` and `time` placeholders.
     */
    'mf1:datetime': typeof datetime;
    /**
     * Formats a duration expressed as seconds.
     *
     * The formatted value includes one or two `:` separators,
     * matching the pattern `hhhh:mm:ss`,
     * possibly with a leading `-` for negative values and a trailing `.sss` part for non-integer input.
     */
    'mf1:duration': typeof duration;
    /**
     * A wrapper around {@link DefaultFunctions.number},
     * used for formatting most `number` placeholders.
     */
    'mf1:number': typeof number;
    /**
     * A plural or selectordinal selector that includes an `offset`.
     *
     * Selectors without an offset are represented by `:number`.
     */
    'mf1:plural': typeof plural;
    /**
     * A wrapper around {@link DraftFunctions.unit},
     * used for formatting `number, percent`, `number, ::unit`, and other placeholders.
     */
    'mf1:unit': typeof unit;
};
export {};