import type { BlockEditProps, BlockReadProps } from "../types.js";
import type { DiffData } from "./diff.config.js";
/**
 * GitHub-style before/after diff block. The read renderer computes a line-level
 * diff, then renders it either unified (one column, `+`/`−` gutters) or split
 * (side-by-side). Long unchanged runs collapse into an expandable "N unchanged
 * lines" row (progressive disclosure). The read surface keeps the GitHub diff
 * shape while using the framework Tailwind theme tokens, so it follows each
 * host app's light/dark appearance instead of bringing its own palette.
 *
 * Lives in core so any app can register the dev-doc block. The line differ is
 * inlined (a small LCS-based `diffLines`) rather than pulling the `diff` package
 * into core; the output shape (`{ value, added, removed }` change records) is
 * identical to what the read renderer consumed before.
 *
 * Editing is panel-driven (config-style, like the HTML block): two monospace
 * textareas (Before / After) plus filename, language, and mode controls.
 */
interface Change {
    value: string;
    added?: boolean;
    removed?: boolean;
}
/**
 * A minimal line-level diff producing jsdiff-compatible `Change[]` records
 * (`{ value }` for context, `{ value, added: true }`, `{ value, removed: true }`).
 * Uses a classic LCS table over line tokens; the inputs here are short code
 * snippets so the O(n·m) table is fine. Removed lines are emitted before added
 * lines within a change region, matching jsdiff's ordering.
 */
export declare function diffLines(before: string, after: string): Change[];
declare function DiffRead({ data, blockId, title, summary, ctx, }: BlockReadProps<DiffData>): import("react").JSX.Element;
declare function DiffEdit({ data, onChange, editable }: BlockEditProps<DiffData>): import("react").JSX.Element;
export { DiffRead, DiffEdit };
//# sourceMappingURL=DiffBlock.d.ts.map