import type { PackageManagerFamily } from "./package-manager";
export type SignetInstallMethod = "native" | PackageManagerFamily;
export interface SignetInstallation {
    readonly method: SignetInstallMethod;
    readonly executablePath: string;
    readonly packagePath?: string;
    readonly active: boolean;
    readonly removalCommand?: string;
}
export type SignetUpdateTarget = {
    readonly kind: "native";
    readonly executablePath: string;
} | {
    readonly kind: "package-manager";
    readonly family: PackageManagerFamily;
    readonly executablePath: string;
} | {
    readonly kind: "unsupported";
    readonly executablePath: string;
    readonly reason: string;
};
export interface SignetInstallationReport {
    readonly target: SignetUpdateTarget;
    readonly installations: readonly SignetInstallation[];
    readonly inactive: readonly SignetInstallation[];
}
interface SignetInstallationDetectionOptions {
    readonly execPath?: string;
    readonly env?: NodeJS.ProcessEnv;
    readonly home?: string;
    readonly platform?: NodeJS.Platform;
    readonly exists?: (path: string) => boolean;
    readonly realpath?: (path: string) => string;
    readonly pathValue?: string;
}
export declare function packageManagerRemovalCommand(family: PackageManagerFamily): string;
export declare function detectSignetInstallations(options?: SignetInstallationDetectionOptions): SignetInstallationReport;
export declare function inactivePackageManagerInstallations(report: SignetInstallationReport): readonly SignetInstallation[];
export {};
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