/** Minimum Node major (mirrors package.json `engines.node`). */
export declare const MIN_NODE_MAJOR = 22;
export interface NodeCheck {
    /** e.g. "v22.21.1" */
    version: string;
    major: number;
    required: number;
    ok: boolean;
}
/** Classify the running Node against the minimum major. Pure. */
export declare function checkNode(version?: string, required?: number): NodeCheck;
/**
 * The version to show in the update card, for the install rooted at `rootDir`.
 * For an npm install this is the real published version from package.json. A
 * source checkout ships the unbuilt `0.0.0` (CI injects the real version only
 * at publish), so we derive a real baseline from the latest git tag
 * (`git describe --tags --abbrev=0` → the clean tag, e.g. "v2.86.0", stripped
 * of the leading v). That makes the version display, "behind" comparison, and
 * changelog range correct in dev mode too. Falls back to the raw package.json
 * version if git is unavailable.
 *
 * Takes an explicit dir so the local-dev update path can report the version of
 * the checkout it actually updated (the wrapper's checkout), which may differ
 * from the running process's install root.
 */
export declare function resolveCurrentVersionAt(rootDir: string): string;
/** The version to show for the running install (its own package root). */
export declare function resolveCurrentVersion(): string;
export type InstallKind = 'npm-global' | 'pnpm-global' | 'yarn-global' | 'bun-global' | 'source-checkout' | 'unknown';
export interface InstallEntry {
    /** The PATH entry that resolved to this install. */
    binPath: string;
    /** The install root we attribute it to (the dedup key). */
    root: string;
    kind: InstallKind;
}
export interface InstallDiagnostics {
    entries: InstallEntry[];
    /** true when more than one distinct install root is reachable on PATH. */
    multiple: boolean;
}
/** Filesystem deps, injectable for tests. */
export interface InstallProbeDeps {
    /** Read a bin file's text, or null (missing / binary / unreadable). */
    readFile: (path: string) => string | null;
    /** Resolve symlinks to a real path, or null on failure. */
    realpath: (path: string) => string | null;
    /** Does `root` look like a source checkout (has .git or src)? */
    isSourceCheckout: (root: string) => boolean;
}
/**
 * Pure: dedup the raw `which -a botmux` paths, resolve each to an install root,
 * and report whether more than one distinct install is present. Exported for
 * tests.
 */
export declare function analyzeInstalls(binPaths: string[], deps: InstallProbeDeps): InstallDiagnostics;
/** Production wiring: probe PATH for botmux installs. */
export declare function detectBotmuxInstalls(): InstallDiagnostics;
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