export type BrowserRuntimeMode = 'development' | 'production';
export type BrowserRuntimeAssetDeclaration = {
    /** Bare or virtual specifier used by authored/generated browser modules. */
    specifier: string;
    /** Integration, processor, or core subsystem that owns this runtime asset. */
    owner: string;
    /** Source import path used to build or resolve the runtime asset. */
    importPath: string;
    /** Concrete browser URL emitted or served for this runtime asset. */
    publicPath: string;
    /** Runtime mode this declaration applies to. Omit when the URL is mode-independent. */
    mode?: BrowserRuntimeMode;
    /** Specifiers that should be treated as external while building this runtime asset. */
    externals?: readonly string[];
};
export type BrowserRuntimeAsset = BrowserRuntimeAssetDeclaration & {
    externals: readonly string[];
};
export type BrowserRuntimeManifest = {
    assets: readonly BrowserRuntimeAsset[];
    bySpecifier: ReadonlyMap<string, BrowserRuntimeAsset>;
};
export declare class BrowserRuntimeManifestConflictError extends Error {
    readonly specifier: string;
    readonly existing: BrowserRuntimeAsset;
    readonly incoming: BrowserRuntimeAsset;
    constructor(specifier: string, existing: BrowserRuntimeAsset, incoming: BrowserRuntimeAsset);
}
export declare function createBrowserRuntimeManifest(declarations?: readonly BrowserRuntimeAssetDeclaration[]): BrowserRuntimeManifest;
export declare function mergeBrowserRuntimeManifests(...manifests: Array<BrowserRuntimeManifest | undefined>): BrowserRuntimeManifest;
export declare function getBrowserRuntimeSpecifierMap(manifest: BrowserRuntimeManifest): ReadonlyMap<string, string>;
/** Resolves a runtime public URL for an exact specifier. */
export declare function resolveRuntimeSpecifierPublicPath(specifier: string, publicPathsBySpecifier: ReadonlyMap<string, string>): string | undefined;
/** Resolves a manifest-owned runtime public URL for an exact specifier. */
export declare function resolveBrowserRuntimePublicPath(specifier: string, manifest: BrowserRuntimeManifest): string | undefined;