import type { MetaObject, MetaRoot } from "@metaobjectsdev/metadata";
/** Render JUST the fenced ```mermaid erDiagram``` block for the whole model
 *  (entities + identity.reference relationships) — NO per-entity prose. This is
 *  the single neutral ER-diagram builder; both `renderMermaidModel()` (the
 *  standalone model.md body) AND the neutral docs OVERVIEW page (`README.md`,
 *  emitted by the Tier-2 `meta docs` engine) consume it, so there is exactly
 *  ONE place ER topology is computed — no duplicate graph logic (ADR-0020).
 *
 *  Abstract entities are excluded — they have no physical table to put in a
 *  diagram (matches migrate-ts/expected-schema.ts's same filter). */
export declare function renderMermaidErBlock(root: MetaRoot): string;
/** Render a docs/model.md body: Mermaid erDiagram + per-entity prose. Abstract
 *  entities are excluded — they have no physical table to put in a diagram
 *  (matches migrate-ts/expected-schema.ts's same filter). Reuses the shared
 *  `renderMermaidErBlock()` for the diagram so the ER logic is never duplicated. */
export declare function renderMermaidModel(root: MetaRoot): string;
/** Render a Mermaid flowchart for ONE focal entity and its direct neighbors
 *  (1-hop). Three node kinds are surfaced and styled distinctly:
 *
 *    - **focal**       — the entity this page is about (deeper blue)
 *    - **same**        — entity in the focal's own package (blue)
 *    - **external**    — entity in a different package (dashed gray)
 *    - **vo**          — value object referenced via `field.object` (rounded
 *                        purple) — composition rather than FK
 *
 *  Every node has a Mermaid `click <node> "./<node>.md"` directive, so the
 *  rendered SVG is a true navigation surface — click any neighbor to jump to
 *  its page. Edges are labeled with the field name that connects them.
 *
 *  This replaces the previous erDiagram-based renderer: Mermaid 10's erDiagram
 *  has near-zero styling and no click support, while flowchart supports both.
 *  The crow's-foot one-to-many notation is dropped — for a 1-hop context
 *  diagram, "what kind of node is this" matters more than ER cardinality.
 *
 *  Returns `undefined` when the focal entity has no neighbors at all, so a
 *  template can `{{#mini}}…{{/mini}}` and skip the section cleanly. Abstract
 *  entities are excluded as neighbors (no physical rows). */
export declare function renderEntityNeighborhoodErBlock(focal: MetaObject, root: MetaRoot): string | undefined;
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