/// <amd-module name="@angular/compiler-cli/ngcc/src/dependencies/dependency_host" />
/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { AbsoluteFsPath, FileSystem, PathSegment } from '../../../src/ngtsc/file_system';
import { ModuleResolver } from './module_resolver';
export interface DependencyHost {
    findDependencies(entryPointPath: AbsoluteFsPath): DependencyInfo;
}
export interface DependencyInfo {
    dependencies: Set<AbsoluteFsPath>;
    missing: Set<AbsoluteFsPath | PathSegment>;
    deepImports: Set<AbsoluteFsPath>;
}
export declare abstract class DependencyHostBase implements DependencyHost {
    protected fs: FileSystem;
    protected moduleResolver: ModuleResolver;
    constructor(fs: FileSystem, moduleResolver: ModuleResolver);
    /**
     * Find all the dependencies for the entry-point at the given path.
     *
     * @param entryPointPath The absolute path to the JavaScript file that represents an entry-point.
     * @returns Information about the dependencies of the entry-point, including those that were
     * missing or deep imports into other entry-points.
     */
    findDependencies(entryPointPath: AbsoluteFsPath): DependencyInfo;
    /**
     * Compute the dependencies of the given file.
     *
     * @param file An absolute path to the file whose dependencies we want to get.
     * @param dependencies A set that will have the absolute paths of resolved entry points added to
     * it.
     * @param missing A set that will have the dependencies that could not be found added to it.
     * @param deepImports A set that will have the import paths that exist but cannot be mapped to
     * entry-points, i.e. deep-imports.
     * @param alreadySeen A set that is used to track internal dependencies to prevent getting stuck
     * in a circular dependency loop.
     */
    protected abstract recursivelyFindDependencies(file: AbsoluteFsPath, dependencies: Set<AbsoluteFsPath>, missing: Set<string>, deepImports: Set<AbsoluteFsPath>, alreadySeen: Set<AbsoluteFsPath>): void;
}