export type SkipConfiguration = string | {
    name: string;
    reason?: string;
};
export interface Configuration {
    /**
     * A list of packages to avoid upgrading when executing `pleb upgrade`.
     * @example ['react', {name: 'execa', reason: 'native esm'}]
     */
    pinnedPackages?: SkipConfiguration[];
}
export declare function loadPlebConfig(directoryPath: string): Promise<Configuration>;
/** key is package to skip; value is reason (which can be an empty string) */
export declare function normalizePinnedPackages(pinnedPackages?: Configuration['pinnedPackages']): Map<string, string>;
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