import type { Change } from "./types.js";
/**
 * Thrown when a foreign key's resolved ON DELETE action is "set-null" but one
 * or more of its FK columns map to a NOT NULL field (@required: true).
 *
 * ON DELETE SET NULL requires the FK column(s) to be nullable — Postgres and
 * SQLite both reject the combination at DDL execution time.
 *
 * Fix: either remove @required from the FK field(s), or override the
 * relationship with @onDelete: "restrict" / "no-action" to avoid set-null.
 */
export declare class SetNullNotNullableError extends Error {
    readonly name = "SetNullNotNullableError";
    readonly entityName: string;
    readonly constraintName: string;
    readonly offendingFields: string[];
    constructor(entityName: string, constraintName: string, offendingFields: string[]);
}
export declare class BlockedChangesError extends Error {
    readonly name = "BlockedChangesError";
    readonly blocked: Change[];
    readonly enableHints: string[];
    constructor(blocked: Change[]);
}
/**
 * #258 — a table whose live PRIMARY KEY differs from the metadata identity cannot be
 * migrated: the diff/emit has no primary-key change kind, so the difference degrades
 * silently into an add-column + drop-column (the old PK column is dropped, the new one
 * is never made PK), leaving the table with no primary key and breaking every foreign
 * key that references it at apply time. Migration generation detects the move and throws
 * this instead of emitting un-appliable SQL (detect-and-refuse; the #226→#241 arc for D1
 * FK cascades is the precedent). A pure column RENAME is NOT a key move — the engine
 * preserves the PK through a `RENAME COLUMN` — and does not trigger this.
 */
export declare class PrimaryKeyChangeError extends Error {
    readonly name = "PrimaryKeyChangeError";
    readonly table: string;
    readonly livePrimaryKey: string[];
    readonly expectedPrimaryKey: string[];
    readonly schema?: string;
    constructor(table: string, livePrimaryKey: string[], expectedPrimaryKey: string[], schema?: string);
}
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