import type { ChannelAudience } from "#shared/channel-audience.js";
export interface SpanExportContext {
    readonly attributes: Readonly<Record<string, unknown>>;
    readonly audience: ChannelAudience;
    readonly name: string;
    readonly spanId: string;
    readonly traceId: string;
}
export type SpanExportDecision = {
    readonly emit: boolean;
} | {
    readonly redact: true;
    readonly inputs?: boolean;
    readonly outputs?: boolean;
};
export type SpanExportAttributeValue = string | number | boolean | readonly string[] | readonly number[] | readonly boolean[];
export type SpanAttributeDecision = {
    readonly emit: boolean;
} | {
    readonly replace: true;
    readonly value: SpanExportAttributeValue;
};
export interface SpanExportPolicy {
    /** Drop one span or redact its directional content for this destination. */
    readonly span?: (span: SpanExportContext) => SpanExportDecision;
    /** Emit or replace individual span attributes after content filtering. */
    readonly attribute?: (input: {
        readonly key: string;
        readonly span: SpanExportContext;
        readonly value: unknown;
    }) => SpanAttributeDecision;
}
/** @internal */
export declare function normalizeSpanExportPolicies(policy: SpanExportPolicy | readonly SpanExportPolicy[] | undefined): readonly SpanExportPolicy[];