import type { ModeAwareCache, Path, ResolvedTypeReferenceDirectiveWithFailedLookupLocations, SourceFile } from "typescript/lib/tsserverlibrary";
export interface MultiMap<K, V> extends Map<K, V[]> {
    /**
     * Adds the value to an array of values associated with the key, and returns the array.
     * Creates the array if it does not already exist.
     */
    add(key: K, value: V): V[];
    /**
     * Removes a value from an array of values associated with the key.
     * Does not preserve the order of those values.
     * Does nothing if `key` is not in `map`, or `value` is not in `map[key]`.
     */
    remove(key: K, value: V): void;
}
export interface SymlinkedDirectory {
    /** Matches the casing returned by `realpath`.  Used to compute the `realpath` of children. */
    real: string;
    /** toPath(real).  Stored to avoid repeated recomputation. */
    realPath: Path;
}
export interface SymlinkCache {
    /** Gets a map from symlink to realpath. Keys have trailing directory separators. */
    getSymlinkedDirectories(): ReadonlyMap<Path, SymlinkedDirectory | false> | undefined;
    /** Gets a map from realpath to symlinks. Keys have trailing directory separators. */
    getSymlinkedDirectoriesByRealpath(): MultiMap<Path, string> | undefined;
    /** Gets a map from symlink to realpath */
    getSymlinkedFiles(): ReadonlyMap<Path, string> | undefined;
    setSymlinkedDirectory(symlink: string, real: SymlinkedDirectory | false): void;
    setSymlinkedFile(symlinkPath: Path, real: string): void;
    /**
     * @internal
     * Uses resolvedTypeReferenceDirectives from program instead of from files, since files
     * don't include automatic type reference directives. Must be called only when
     * `hasProcessedResolutions` returns false (once per cache instance).
     */
    setSymlinksFromResolutions(files: readonly SourceFile[], typeReferenceDirectives: ModeAwareCache<ResolvedTypeReferenceDirectiveWithFailedLookupLocations>): void;
    /**
     * @internal
     * Whether `setSymlinksFromResolutions` has already been called.
     */
    hasProcessedResolutions(): boolean;
}