import { SQL } from '../query/sql/sql.js';
import { Column } from '../query/column.js';
export interface PwSnapshot {
    version: 'pw1';
    id: string;
    prevId: string;
    tables: Record<string, PwTableSnapshot>;
}
export interface PwTableSnapshot {
    name: string;
    schema: string;
    columns: Record<string, PwColumnSnapshot>;
    indexes: Record<string, PwIndexSnapshot>;
    foreignKeys: Record<string, PwForeignKeySnapshot>;
    checks: Record<string, PwCheckSnapshot>;
    uniqueConstraints: Record<string, PwUniqueSnapshot>;
    compositePrimaryKeys: Record<string, PwCompositePKSnapshot>;
    partitionBy: PwPartitionSnapshot | undefined;
}
export interface PwPartitionSnapshot {
    strategy: 'range';
    /** Column name (snake_case), already projected from the field key. */
    column: string;
}
export interface PwColumnSnapshot {
    name: string;
    type: string;
    primaryKey: boolean;
    notNull: boolean;
    default: string | undefined;
    isUnique: boolean;
    uniqueName: string | undefined;
    generated: {
        as: string;
        type: 'always';
    } | undefined;
    identity: {
        type: 'always' | 'byDefault';
        name: string | undefined;
        options: PwSequenceOptions | undefined;
    } | undefined;
}
export interface PwSequenceOptions {
    increment: string | undefined;
    minValue: string | undefined;
    maxValue: string | undefined;
    startWith: string | undefined;
    cache: string | undefined;
    cycle: boolean | undefined;
}
export interface PwIndexSnapshot {
    name: string;
    columns: PwIndexColumnSnapshot[];
    unique: boolean;
    method: string;
    where: string | undefined;
    concurrently: boolean;
    with: Record<string, unknown> | undefined;
}
export interface PwIndexColumnSnapshot {
    expression: string;
    isExpression: boolean;
    order: string | undefined;
    nulls: string | undefined;
    opClass: string | undefined;
}
export interface PwForeignKeySnapshot {
    name: string;
    columns: string[];
    foreignTable: string;
    foreignSchema: string;
    foreignColumns: string[];
    onUpdate: string | undefined;
    onDelete: string | undefined;
}
export interface PwCheckSnapshot {
    name: string;
    value: string;
}
export interface PwUniqueSnapshot {
    name: string;
    columns: string[];
    nullsNotDistinct: boolean;
}
export interface PwCompositePKSnapshot {
    name: string;
    columns: string[];
}
export declare const EMPTY_SNAPSHOT: PwSnapshot;
export declare function serializeSQL(value: SQL): string;
export declare function serializeDefault(column: Column): string | undefined;
export declare function buildSnapshot(imports: Record<string, unknown>, prevId: string): PwSnapshot;
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