/**
 * SPDX-FileCopyrightText: © 2020 Liferay, Inc. <https://liferay.com>
 * SPDX-License-Identifier: LGPL-3.0-or-later
 */
/** Structure of `config.imports` section of `.npmbundlerrc` */
export interface ImportsConfig {
    /** Version constraints for provider packages theirselves */
    ''?: PackageConstraints;
    /** Version constraints for packages provided by provider packages */
    [index: string]: PackageConstraints | ProviderImports;
}
/** Version constraints indexed by package name */
export interface PackageConstraints {
    /** Version constraints for a package name */
    [index: string]: string;
}
/**
 * Version constraints indexed by package name (may include the provider package
 * itself)
 */
export interface ProviderImports extends PackageConstraints {
    /** Version constraints for the provider package itself */
    '/'?: string;
}
/**
 * Another format form {@link ImportsConfig} unrolled for easy indexing of
 * imported packages.
 */
export interface UnrolledImportsConfig {
    /** Import configuration for a given imported package name */
    [index: string]: UnrolledImport;
}
/** Import configuration for an imported package */
export interface UnrolledImport {
    /** Provider package name */
    name: string;
    /** Provider package version constraints */
    version: string;
}
/**
 * Normalize an imports configuration to canonicalize all syntactic sugar.
 * @param importsConfig the configuration in its original format
 * @param useSlashFormat whether to use slash or empty string format for
 * 			provider packages version constraints
 * @return the normalized configuration after resolving all syntactic sugar
 */
export declare function normalizeImportsConfig(importsConfig: ImportsConfig, useSlashFormat?: boolean): ImportsConfig;
/**
 * Unrolls the imports configuration section of .npmbundlerrc file.
 * @param importsConfig the configuration in its original format
 * @return the unrolled configuration with one entry per module name
 */
export declare function unrollImportsConfig(importsConfig: ImportsConfig): UnrolledImportsConfig;