import { ColumnRefNode } from './ast/column-ref.js';
import { ExprNode, SQLNode } from './ast/node.js';
import { TableRefNode } from './ast/table-ref.js';
import { Query } from './ast/query.js';
import { WithClauseNode } from './ast/with.js';
/**
 * Interface representing a dynamic parameter value.
 */
export interface ParamLike {
    /** The current parameter value. */
    value: unknown;
    /** Add an event listener callback. */
    addEventListener(type: string, callback: EventCallback): void;
    /** Remove an event listener callback. */
    removeEventListener(type: string, callback: EventCallback): void;
}
/**
 * Expression value input to SQL builder method.
 */
export type ExprValue = ExprNode | ParamLike | string | number | boolean | Date | null;
/**
 * Expression values that may be nested in arrays.
 */
export type ExprVarArgs = MaybeArray<ExprValue>;
/**
 * String-typed expression value.
 */
export type StringValue = ExprNode | ParamLike | string;
/**
 * Number-typed expression value.
 */
export type NumberValue = ExprNode | ParamLike | number;
/**
 * Event listener callback function.
 */
export type EventCallback = <T>(value: unknown) => Promise<T> | undefined;
/** Valid window function names. */
export type WindowFunctionName = 'cume_dist' | 'dense_rank' | 'first_value' | 'lag' | 'last_value' | 'lead' | 'nth_value' | 'ntile' | 'percent_rank' | 'rank_dense' | 'rank' | 'row_number';
export type MaybeArray<T> = T | T[];
export type SelectEntry = null | string | ColumnRefNode | [string, ExprNode] | Record<string, ExprValue>;
export type SelectExpr = MaybeArray<SelectEntry>;
export type WithEntry = WithClauseNode | Record<string, Query>;
export type WithExpr = MaybeArray<WithEntry>;
export type FromEntry = string | TableRefNode | SQLNode | [string, SQLNode] | Record<string, string | SQLNode>;
export type FromExpr = MaybeArray<FromEntry>;
export type FilterExpr = MaybeArray<string | boolean | ExprNode>;
export type GroupByExpr = MaybeArray<string | ExprNode>;
export type OrderByExpr = MaybeArray<string | ExprNode>;
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