/** Matches .ts or .js extension. Exported for plugin transform/watch filters. */
export declare const TS_JS_RE: RegExp;
/** Matches the island mixin import. Exported for plugin transform/watch detection. */
export declare const ISLAND_IMPORT_RE: RegExp;
export interface AliasLike {
    find: string | RegExp;
    replacement: string;
}
export interface IslandInventoryConfig {
    root: string;
    aliases: readonly AliasLike[];
}
export interface IslandInventorySnapshot {
    resolvedDirectories: string[];
    islandFiles: string[];
    directoryFiles: string[];
    directoryTagNames: string[];
}
export interface IslandInventoryChange {
    type: "detected" | "removed";
    file: string;
}
export interface IslandInventoryState {
    root: string;
    directories: string[];
    directoryFiles: Set<string>;
    islandFiles: Set<string>;
}
/** True if file is under any of the given absolute directory paths. */
export declare function inDirectory(file: string, absDirs: string[]): boolean;
/** Paths for load() virtual module: "/relative/to/root" form, forward slashes. */
export declare function getIslandPathsForLoad(islandFiles: Set<string>, root: string): string[];
/** True when file content declares Island membership and the file is not inside a managed directory. */
export declare function isIslandMember(code: string, absolutePath: string, absDirs: string[]): boolean;
/** Scan from root for files containing the island import; returns paths (not in absDirs). */
export declare function discoverIslandFiles(root: string, absDirs: string[]): Set<string>;
/** Tag names (filename without extension) for TS/JS files in a directory. Used for debug logging. */
export declare function collectTagNames(dir: string): string[];
export declare function createIslandInventory(rawDirectories: string[]): {
    configure(config: IslandInventoryConfig): void;
    scan(): IslandInventorySnapshot | null;
    applyTransform(id: string, code: string): IslandInventoryChange | null;
    applyWatchChange(id: string, event: string): IslandInventoryChange | null;
    state(): IslandInventoryState;
    getRoot(): string;
};