/**
 * pgrep `-f` pattern used by `isHermesChatRunning`.
 *
 * Exported separately so callers — and tests — can introspect the exact
 * string we hand to `pgrep` and confirm we have not silently regressed
 * back to a literal substring match.
 */
export declare const HERMES_CHAT_PROCESS_PATTERN = "hermes([[:space:]]+[^[:space:]]+)*[[:space:]]+chat([[:space:]]|$)";
/**
 * JS-side equivalent of `pgrep -f HERMES_CHAT_PROCESS_PATTERN`.
 *
 * Used by unit tests to verify the regex matches every documented
 * Hermes invocation shape and rejects unrelated command lines. Kept
 * deliberately stateless — callers should pass the full
 * `/proc/<pid>/cmdline`-style command-line string.
 */
export declare function matchesHermesChatCommandLine(commandLine: string): boolean;
/**
 * Shape of the `execFileSync`-compatible helper that
 * `isHermesChatRunning` shells out through. Carved out as a named type
 * so tests can pass a `vi.fn()` without depending on Node's overloaded
 * `ExecFileSyncOptions` union.
 */
export type ExecFileSyncLike = (file: string, args: readonly string[], options: {
    encoding: "utf8";
    timeout: number;
}) => string;
/**
 * Returns `true` when `pgrep -f` finds at least one process whose full
 * command line matches `HERMES_CHAT_PROCESS_PATTERN`.
 *
 * `pgrep` exits non-zero when there is no match, when it cannot be
 * found, or on permission errors — all of which we collapse into
 * `false` because the caller only uses the boolean to decide whether
 * to upgrade `"disconnected"` to `"reconnecting"`. Surfacing the
 * difference would just turn a UI hint into a noisy crash path.
 *
 * `execFile` is overridable so the unit test can inject a stub instead
 * of mocking `node:child_process` globally — a Node ESM namespace is
 * frozen at import time, so spy-based mocking is brittle. Injection is
 * the same dependency pattern the rest of the bridge uses (see
 * `startStdioServer`'s `stdin` / `stdout` options).
 */
export declare function isHermesChatRunning(execFile?: ExecFileSyncLike): boolean;
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