import type { NpmOptions } from '../types/NpmOptions';
import { type NpmAuthOptions } from './npmArgs';
import type { PackageJson } from '../types/PackageInfo';
/** Published versions and dist-tags for a package */
export interface NpmPackageVersionsData {
    /** All versions of a package */
    versions: string[];
    /** Mapping from package dist-tag to version */
    'dist-tags': Record<string, string>;
}
export interface NpmRegistryFetchJson {
    /** Package name */
    name: string;
    /** String of date modified (as of writing, this isn't used, and will be a constant date in tests) */
    modified: string;
    /**
     * Mapping from version to package manifest (package.json and some extra properties).
     *
     * This includes manifests for all published versions of the package, which is unfortunate since
     * this could be a lot of data and there doesn't appear to be a consistent way to reduce it.
     * (It appears this is what [`npm show/view`][1] receives internally as well, and filtering is applied
     * to the result. [`pacote`][2] uses `npm-registry-fetch` internally.)
     *
     * [1]: https://github.com/npm/cli/blob/f2c3af7de1906b0517bba1e7e5b9247d57960d99/lib/commands/view.js#L102
     * [2]: https://github.com/npm/pacote/blob/4b559c4c663a23f988f6be5094c9a45faf6231bc/lib/registry.js
     */
    versions: Record<string, PackageJson>;
    'dist-tags': Record<string, string>;
}
/**
 * `Accept` header for `npm-registry-fetch` requests. Per [npm registry docs][1], the first content type
 * requests a smaller subset of info from the public npm registry, and the other types are fallbacks.
 *
 * [1]: https://github.com/npm/registry/blob/main/docs/responses/package-metadata.md
 */
export declare const _packageContentTypeAccept = "application/vnd.npm.install-v1+json; q=1.0, application/json; q=0.8, */*";
export declare const _npmShowProperties: string[];
/**
 * Get package versions and tags using `npm-registry-fetch`.
 * @returns Data about the package, or undefined if there was some issue
 */
export declare function getNpmPackageInfo(packageName: string, options: NpmAuthOptions & Pick<NpmOptions, 'registry' | 'timeout' | 'verbose' | 'path'>): Promise<NpmPackageVersionsData | undefined>;
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