import type { ServerResponse } from 'node:http';
import type { WhichConfig } from '@vltpkg/vlt-json';
export declare const isValidWhich: (w: unknown) => w is WhichConfig;
export declare const normalizeKeyPairs: (res: ServerResponse, pairs: unknown) => {
    ok: true;
    keys: string[];
} | {
    ok: false;
};
export declare const normalizeKeyValuePairs: (res: ServerResponse, pairs: unknown) => {
    ok: true;
    normalized: {
        key: string;
        value: string;
    }[];
} | {
    ok: false;
};
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