/**
 * Resolves what the stdout sink is allowed to do — use colour, animate the
 * spinner in place, and show persona/flavor personality — from the terminal's
 * capabilities and the user's overrides. Pure (no I/O): main.ts reads
 * `process.stdout.isTTY` and the environment, then passes the booleans here, so
 * the precedence rules are unit-tested directly.
 *
 * Precedence, highest first:
 *   - `--plain` → the plainest output: no colour, no animation, no fun,
 *     regardless of TTY.
 *   - colour: NO_COLOR off-switch wins over FORCE_COLOR; absent both, colour
 *     follows the TTY. (NO_COLOR / FORCE_COLOR are the cross-tool conventions.)
 *   - animation: only ever on a real TTY — in-place carriage-return redraws are
 *     garbage in a piped/CI log. FORCE_COLOR colours a non-TTY but never animates
 *     it (a redirected stream still must not carry spinner frames).
 *   - fun (personas/flavor): on by default on a TTY, but never on a non-TTY (a
 *     CI log should not say "hands on keyboard") and disabled by DIABLO_FUN=0.
 */
export interface CapabilityInputs {
    /** process.stdout.isTTY — false when piped, redirected, or in CI. */
    isTty: boolean;
    /** NO_COLOR present (any value) — the standard "disable colour" off-switch. */
    noColor: boolean;
    /** FORCE_COLOR present — force colour even when not a TTY. */
    forceColor: boolean;
    /** The --plain run flag — force the plainest possible output. */
    plain: boolean;
    /** DIABLO_FUN explicitly disabled (e.g. DIABLO_FUN=0) — neutral wording. */
    funOff: boolean;
}
export interface StdoutCapabilities {
    /** Emit ANSI colour/style escapes. */
    colour: boolean;
    /** Animate the spinner in place (carriage returns); only safe on a TTY. */
    animate: boolean;
    /** Show per-tier personas and rotating flavor text (stdout-only personality). */
    fun: boolean;
}
export declare function resolveStdoutCapabilities(inputs: CapabilityInputs): StdoutCapabilities;