import type { SpooledArtifactConstructor } from "../../../common";
import type { ArtifactMinter } from "../contracts/artifact_minter";
/** A format declaration accepted by the default minter. */
export type ArtifactFormat = {
    /** Stable identifier for the format. */
    id: string;
    /** MIME types handled by the format. */
    mime: string[];
    /** Filename extensions handled by the format. */
    extensions: string[];
    /** Lazy constructor loader; it is called only after the format is selected. */
    ctor: () => Promise<unknown>;
};
/** A pure minter with optional, lazily loaded consumer formats. */
export declare class DefaultArtifactMinter implements ArtifactMinter {
    #private;
    constructor(formats?: readonly ArtifactFormat[]);
    /** Return format metadata without invoking any constructor thunk. */
    formats(): Promise<ArtifactFormat[]>;
    /** Resolve the constructor for a MIME type; unknown types use the base artifact. */
    constructorForMime(mime: string | undefined): Promise<SpooledArtifactConstructor>;
    /** Resolve the constructor from a MIME type, then an extension, without validating content. */
    constructorForPath(path: string, mime?: string): Promise<SpooledArtifactConstructor>;
}
/** The shared default registry. Its format thunks remain lazy until selected. */
export declare const defaultArtifactMinter: DefaultArtifactMinter;
/** Select the default artifact constructor for a path. */
export declare const artifactConstructorForPath: (path: string, mime?: string) => Promise<SpooledArtifactConstructor>;
/** Select a constructor from a caller-provided minter, never throwing on bad metadata. */
export declare const constructorFromMinter: (minter: ArtifactMinter, mime: string | undefined) => Promise<SpooledArtifactConstructor>;