import type { PluginOptions } from "@opencode-ai/plugin";
export interface TokenOptimizerConfig {
    /**
     * Base directory under which the `token-optimizer/` data folder is created.
     * Unset means "resolve the platform-global location" (see resolveDataDir).
     * Set it via PluginOptions.dataDir or TOKEN_OPTIMIZER_DATA_DIR.
     */
    dataDir?: string;
    qualityWindow: number;
    toolCallWarnThreshold: number | null;
    toolCallCriticalThreshold: number | null;
    checkpointMaxFiles: number;
    checkpointTtlSeconds: number;
    checkpointRetentionDays: number;
    checkpointRetentionMax: number;
    relevanceThreshold: number;
    checkpointCooldownSeconds: number;
    checkpointMaxChars: number;
    freshNudgeQualityThreshold: number;
    freshNudgeMinFillPct: number;
    features: {
        qualityNudges: boolean;
        loopDetection: boolean;
        smartCompaction: boolean;
        continuity: boolean;
        activityTracking: boolean;
        trends: boolean;
    };
}
/**
 * The host facts this module branches on.
 *
 * Injected rather than read inline so every platform branch is reachable from a
 * test on any one machine. Reading `platform()` directly inside the resolver
 * meant the Windows and Linux paths shipped without ever executing.
 */
export interface HostContext {
    platform: string;
    home: string;
    env: Record<string, string | undefined>;
    /** Separator used when rejoining a split path. */
    sep: string;
}
/**
 * The platform-global base directory, with no config or env override applied.
 * Split out from resolveDataDir purely so each branch is directly testable.
 */
export declare function platformDataDir(host?: HostContext): string;
/**
 * Resolve the data ROOT: the exact directory that holds trends.db and the
 * sessions/ tree. Callers use it as-is and never append a folder name.
 *
 * Precedence:
 *   1. explicit config.dataDir / TOKEN_OPTIMIZER_DATA_DIR -> used VERBATIM.
 *   2. nothing set -> platform-global location + `token-optimizer/`.
 *
 * Verbatim is the whole point: what you type is where data goes, leaf
 * name and all. Set `.opencode/token-optimizer` and that is the folder; set
 * `.token-optimizer` and you get a hidden folder with that exact name. The old
 * behaviour force-appended `token-optimizer`, so the dotted name the user asked
 * for was literally unreachable (it produced `.token-optimizer/token-optimizer/`).
 *
 * Unset still defaults OUT of the repo, so a folder only lands in a project when
 * the user explicitly points it there.
 */
export declare function resolveDataDir(config?: Pick<TokenOptimizerConfig, "dataDir">, host?: HostContext): string;
/**
 * Encode a project path into a single filesystem-safe directory name, matching
 * Claude Code's `~/.claude/projects/` convention so the same project resolves to
 * the same slug across both tools.
 *
 *   /Users/alex/my project  ->  -Users-alex-my-project
 *   D:\Code\my app          ->  D--Code-my-app
 *
 * Returns "unknown-project" for empty input rather than "", which would collapse
 * the scoped path back onto the unscoped parent directory.
 */
export declare function hashProjectDir(worktree: string): string;
export declare function resolveConfig(options?: PluginOptions): TokenOptimizerConfig;
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