/**
 * Brings the JSON of an edition written by an earlier release of the
 * format up to the current shape. The shapes are recognised
 * structurally, so a file that is current already passes through
 * unchanged, and a file may be migrated any number of times.
 *
 * Format 0.1 used the type discriminator of versions and conditions
 * for their typology, held the keeper and the production metadata as
 * strings, and named the roll system on each copy. Some 0.1 files
 * also carry references written as values and two keys the format
 * had renamed before.
 */
type Json = any;
/** A copy's id without the `copy/` that documents of earlier releases put before it. */
export declare const plainCopyId: (id: string) => string;
/**
 * The motivation an edit of a version that derives from another is left
 * with where only the edition can tell what kind of change it is: one
 * that states neither a kind nor a reason, as a collation once left
 * them. `importJsonLd` reads its kind off its shape (`proposedMotivations`).
 */
export declare const uncheckedMotivation = "unchecked";
/**
 * Brings the JSON of an edition written by an earlier release of the
 * format up to the current shape. A document that is current already
 * passes through unchanged, and one may be migrated any number of
 * times. `importJsonLd` migrates what it reads, so this is needed only
 * to look at an old document as JSON.
 * @category Reading and writing
 */
export declare const migrate: (edition: Json) => Json;
export {};