/** Remove only undeclared, unpacked root copies of packages in packages/*.
 * pnpm install can retain these old npm copies, allowing them to shadow a
 * workspace package's self-reference and its exports during TypeScript builds.
 * The caller holds the update lock and supplies the inactive git slot.
 */
export declare function cleanStaleWorkspacePackages(slot: string, log: (message: string) => void): Promise<void>;
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