import * as z from "zod/v4-mini";
import { Result as SafeParseResult } from "../../types/fp.js";
import { AggregationType } from "./aggregation-type.js";
import { SDKValidationError } from "./sdk-validation-error.js";
import { WindowSize } from "./window-size.js";
export type MeterAggregation = {
    bucketSize?: WindowSize | undefined;
    /**
     * Expression is an optional CEL expression to compute per-event quantity from event.properties.
     *
     * @remarks
     * When set, it replaces Field-based extraction. Property names are used directly (e.g., token * duration * pixel).
     */
    expression?: string | undefined;
    /**
     * Field is the key in $event.properties on which the aggregation is to be applied
     *
     * @remarks
     * For ex if the aggregation type is sum for API usage, the field could be "duration_ms"
     * Ignored when Expression is set.
     */
    field?: string | undefined;
    /**
     * GroupBy is the property name in event.properties to group by before aggregating.
     *
     * @remarks
     * Currently only supported for MAX aggregation with bucket_size.
     * When set, aggregation is applied per unique value of this property within each bucket,
     * then the per-group results are summed to produce the bucket total.
     */
    groupBy?: string | undefined;
    /**
     * Multiplier is the multiplier for the aggregation
     *
     * @remarks
     * For ex if the aggregation type is sum_with_multiplier for API usage, the multiplier could be 1000
     * to scale up by a factor of 1000. If not provided, it will be null.
     */
    multiplier?: string | undefined;
    type?: AggregationType | undefined;
};
/** @internal */
export declare const MeterAggregation$inboundSchema: z.ZodMiniType<MeterAggregation, unknown>;
/** @internal */
export type MeterAggregation$Outbound = {
    bucket_size?: string | undefined;
    expression?: string | undefined;
    field?: string | undefined;
    group_by?: string | undefined;
    multiplier?: string | undefined;
    type?: string | undefined;
};
/** @internal */
export declare const MeterAggregation$outboundSchema: z.ZodMiniType<MeterAggregation$Outbound, MeterAggregation>;
export declare function meterAggregationToJSON(meterAggregation: MeterAggregation): string;
export declare function meterAggregationFromJSON(jsonString: string): SafeParseResult<MeterAggregation, SDKValidationError>;
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