/**
 * @license
 * Copyright Google LLC 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
 */
/// <reference types="node" />
/// <reference types="@types/node/url" />
/// <reference types="@types/node/ts4.8/url" />
import { json, workspaces } from '@angular-devkit/core';
import { URL } from 'url';
import { BuilderInfo } from '../src';
import { Target } from '../src/input-schema';
import { ArchitectHost, Builder } from '../src/internal';
export type NodeModulesBuilderInfo = BuilderInfo & {
    import: string;
};
export interface WorkspaceHost {
    getBuilderName(project: string, target: string): Promise<string>;
    getMetadata(project: string): Promise<json.JsonObject>;
    getOptions(project: string, target: string, configuration?: string): Promise<json.JsonObject>;
    hasTarget(project: string, target: string): Promise<boolean>;
    getDefaultConfigurationName(project: string, target: string): Promise<string | undefined>;
}
export declare class WorkspaceNodeModulesArchitectHost implements ArchitectHost<NodeModulesBuilderInfo> {
    protected _root: string;
    private workspaceHost;
    constructor(workspaceHost: WorkspaceHost, _root: string);
    constructor(workspace: workspaces.WorkspaceDefinition, _root: string);
    getBuilderNameForTarget(target: Target): Promise<string>;
    /**
     * Resolve a builder. This needs to be a string which will be used in a dynamic `import()`
     * clause. This should throw if no builder can be found. The dynamic import will throw if
     * it is unsupported.
     * @param builderStr The name of the builder to be used.
     * @returns All the info needed for the builder itself.
     */
    resolveBuilder(builderStr: string): Promise<NodeModulesBuilderInfo>;
    getCurrentDirectory(): Promise<string>;
    getWorkspaceRoot(): Promise<string>;
    getOptionsForTarget(target: Target): Promise<json.JsonObject | null>;
    getProjectMetadata(target: Target | string): Promise<json.JsonObject | null>;
    loadBuilder(info: NodeModulesBuilderInfo): Promise<Builder>;
}
/**
 * This uses a dynamic import to load a module which may be ESM.
 * CommonJS code can load ESM code via a dynamic import. Unfortunately, TypeScript
 * will currently, unconditionally downlevel dynamic import into a require call.
 * require calls cannot load ESM code and will result in a runtime error. To workaround
 * this, a Function constructor is used to prevent TypeScript from changing the dynamic import.
 * Once TypeScript provides support for keeping the dynamic import this workaround can
 * be dropped.
 *
 * @param modulePath The path of the module to load.
 * @returns A Promise that resolves to the dynamically imported module.
 */
export declare function loadEsmModule<T>(modulePath: string | URL): Promise<T>;