/**
 * Which Claude Code binaries a shell would find, and whether the one it runs
 * can load mods (ADR-404). Mods are on by default from Claude Code 2.1.287;
 * from 2.1.277 they load with CLAUDE_CODE_ENABLE_FUNCTION_HOOKS=1; older
 * builds predate them. A server-side rollout switch can still hold them off
 * on any version (reported separately). A stale install earlier on PATH
 * (a 2.1.107 npm-global beside a current native one, say) silently decides.
 */
export declare const MODS_DEFAULT_ON = "2.1.287";
export declare const MODS_FIRST = "2.1.277";
export interface ClaudeInstall {
    path: string;
    version: string | null;
}
export type VersionOf = (path: string) => string | null;
/** a < b for dotted numeric versions. */
export declare function versionLess(a: string, b: string): boolean;
export interface VersionProbe {
    command: string;
    args: string[];
    windowsVerbatimArguments?: boolean;
}
/**
 * #4397: Node refuses to execFile a .cmd/.bat shim on Windows (EINVAL), so the
 * npm-global `claude.cmd` read as "version unknown". Shims go through cmd.exe
 * with the path quoted; a path holding cmd metacharacters is not probed at
 * all (null) rather than risk interpreting it.
 */
export declare function versionProbe(path: string, platform?: NodeJS.Platform, comspec?: string): VersionProbe | null;
/** `claude --version` of one binary, bounded; null when it cannot say. */
export declare const defaultVersionOf: VersionOf;
/** Every `claude` on PATH, in PATH order (the first is what runs), plus ~/.local/bin. */
export declare function findClaudeInstalls(env: NodeJS.ProcessEnv, home: string, versionOf?: VersionOf): ClaudeInstall[];
export interface InstallsFinding {
    status: 'pass' | 'warn';
    message: string;
    fix?: string;
}
/** The doctor's reading of what `claude` resolves to and what else is installed. */
export declare function judgeInstalls(installs: readonly ClaudeInstall[], enableEnvSet: boolean): InstallsFinding;
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