export type ResponsesCompressionSkipReason = 'disabled' | 'unsupported-protocol' | 'custom-fetch' | 'untrusted-origin' | 'unsupported-request' | 'unsupported-body' | 'unsupported-content-type' | 'existing-encoding' | 'transfer-encoding' | 'invalid-content-length' | 'below-minimum' | 'work-limit' | 'not-beneficial' | 'compression-failed' | 'aborted';
export type RequestCompressionEvidence = {
    readonly encoding: 'identity';
    readonly reason: ResponsesCompressionSkipReason;
    readonly originalBytes?: number;
} | {
    readonly encoding: 'gzip';
    readonly reason: 'compressed';
    readonly originalBytes: number;
    readonly wireBytes: number;
};
type PreparedRequest = {
    readonly input: RequestInfo | URL;
    readonly init: RequestInit | undefined;
    readonly evidence: RequestCompressionEvidence;
};
export type PreparedResponsesRequest = (PreparedRequest & {
    readonly applied: false;
    readonly reason: ResponsesCompressionSkipReason;
    readonly originalBytes?: number;
}) | (PreparedRequest & {
    readonly applied: true;
    readonly evidence: Extract<RequestCompressionEvidence, {
        encoding: 'gzip';
    }>;
    readonly originalBytes: number;
    readonly wireBytes: number;
});
export declare function satisfiesCompressionSavings(originalBytes: number, wireBytes: number): boolean;
/** Prepares one dispatch without changing the native request when compression is ineligible. */
export declare function prepareResponsesRequest(input: RequestInfo | URL, init: RequestInit | undefined, accountBaseUrl: string, enabled: boolean, customFetch: boolean, signal?: AbortSignal, api?: string): Promise<PreparedResponsesRequest>;
export {};
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