/**
 * @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
 */
import { json } from '@angular-devkit/core';
import { BuilderInfo, BuilderInput, BuilderOutput, Target } from './api';
import { JobDescription, JobHandler } from './jobs';
/**
 * BuilderSymbol used for knowing if a function was created using createBuilder(). This is a
 * property set on the function that should be `true`.
 * Using Symbol.for() as it's a global registry that's the same for all installations of
 * Architect (if some libraries depends directly on architect instead of sharing the files).
 */
export declare const BuilderSymbol: unique symbol;
/**
 * BuilderVersionSymbol used for knowing which version of the library createBuilder() came from.
 * This is to make sure we don't try to use an incompatible builder.
 * Using Symbol.for() as it's a global registry that's the same for all installations of
 * Architect (if some libraries depends directly on architect instead of sharing the files).
 */
export declare const BuilderVersionSymbol: unique symbol;
/**
 * A Specialization of the JobHandler type. This exposes BuilderDescription as the job description
 * type.
 */
export declare type BuilderJobHandler<A extends json.JsonObject = json.JsonObject, I extends BuilderInput = BuilderInput, O extends BuilderOutput = BuilderOutput> = JobHandler<A, I, O> & {
    jobDescription: BuilderDescription;
};
/**
 * A Builder description, which is used internally. Adds the builder info which is the
 * metadata attached to a builder in Architect.
 */
export interface BuilderDescription extends JobDescription {
    info: BuilderInfo;
}
/**
 * A Builder instance. Use createBuilder() to create one of these.
 */
export interface Builder<OptionT extends json.JsonObject = json.JsonObject> {
    handler: JobHandler<json.JsonObject, BuilderInput, BuilderOutput>;
    [BuilderSymbol]: true;
    [BuilderVersionSymbol]: string;
}
export interface ArchitectHost<BuilderInfoT extends BuilderInfo = BuilderInfo> {
    /**
     * Get the builder name for a target.
     * @param target The target to inspect.
     */
    getBuilderNameForTarget(target: Target): Promise<string | null>;
    /**
     * Resolve a builder. This needs to return 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 builderName The name of the builder to be used.
     * @returns All the info needed for the builder itself.
     */
    resolveBuilder(builderName: string): Promise<BuilderInfoT | null>;
    loadBuilder(info: BuilderInfoT): Promise<Builder | null>;
    getCurrentDirectory(): Promise<string>;
    getWorkspaceRoot(): Promise<string>;
    getOptionsForTarget(target: Target): Promise<json.JsonObject | null>;
    getProjectMetadata(projectName: string): Promise<json.JsonObject | null>;
    getProjectMetadata(target: Target): Promise<json.JsonObject | null>;
}