import { spawnSync, type ChildProcess, type SpawnOptions, type SpawnSyncOptionsWithStringEncoding, type SpawnSyncReturns } from 'child_process';
type ExistsSyncLike = (path: string) => boolean;
type SpawnLike = (command: string, args: string[], options: SpawnOptions) => ChildProcess;
type SpawnSyncLike = typeof spawnSync;
export type SpawnErrorKind = 'missing' | 'blocked' | 'error';
export interface PlatformCommandSpec {
    command: string;
    args: string[];
    resolvedPath?: string;
}
export interface ProbedPlatformCommand {
    spec: PlatformCommandSpec;
    result: SpawnSyncReturns<string>;
}
export interface SpawnedPlatformCommand {
    spec: PlatformCommandSpec;
    child: ChildProcess;
}
export declare function classifySpawnError(error: NodeJS.ErrnoException | undefined | null): SpawnErrorKind | null;
export declare function resolveCommandPathForPlatform(command: string, platform?: NodeJS.Platform, env?: NodeJS.ProcessEnv, existsImpl?: ExistsSyncLike): string | null;
export declare function resolveTmuxBinaryForPlatform(platform?: NodeJS.Platform, env?: NodeJS.ProcessEnv, existsImpl?: ExistsSyncLike): string | null;
/**
 * Detects whether OMX is running under cmux, whose `tmux` binary is a shim
 * (`~/.cmuxterm/.../tmux` -> `cmux __tmux-compat`) that does not implement
 * tmux's `split-window -e KEY=VALUE` environment option. Under cmux the `-e`
 * flags leak into the spawned pane's shell command, so pane-spawn callers must
 * deliver env vars without relying on `-e`. cmux exports these socket env vars
 * for every session it manages, which is a stable runtime marker.
 */
export declare function isRunningUnderCmux(env?: NodeJS.ProcessEnv): boolean;
export declare function buildPlatformCommandSpec(command: string, args: string[], platform?: NodeJS.Platform, env?: NodeJS.ProcessEnv, existsImpl?: ExistsSyncLike): PlatformCommandSpec;
export declare function spawnPlatformCommandSync(command: string, args: string[], options?: SpawnSyncOptionsWithStringEncoding, platform?: NodeJS.Platform, env?: NodeJS.ProcessEnv, existsImpl?: ExistsSyncLike, spawnImpl?: SpawnSyncLike): ProbedPlatformCommand;
export declare function spawnPlatformCommand(command: string, args: string[], options?: SpawnOptions, platform?: NodeJS.Platform, env?: NodeJS.ProcessEnv, existsImpl?: ExistsSyncLike, spawnImpl?: SpawnLike): SpawnedPlatformCommand;
export {};
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