import type { PgLiteral, PgLiteralValue } from '../utils';
/**
 * Type that provides auto-suggestions but also any string.
 *
 * @see https://github.com/microsoft/TypeScript/issues/29729#issuecomment-471566609
 */
export type LiteralUnion<TSuggested extends TBase, TBase = string> = TSuggested | (TBase & {
    zz_IGNORE_ME?: never;
});
export type PublicPart<T> = {
    [K in keyof T]: T[K];
};
export type Nullable<T> = {
    [P in keyof T]: T[P] | null;
};
export type Value = null | boolean | string | number | PgLiteral | PgLiteralValue | Value[];
export type Type = string | {
    type: string;
};
export type Name = string | {
    schema?: string;
    name: string;
};
export interface IfNotExistsOption {
    ifNotExists?: boolean;
}
export interface IfExistsOption {
    ifExists?: boolean;
}
export interface CascadeOption {
    cascade?: boolean;
}
export type DropOptions = IfExistsOption & CascadeOption;
/**
 * A function that returns a normal SQL statement or an array of SQL statements.
 *
 * The array is useful for operations that need to return multiple SQL statements like an additional `COMMENT`.
 */
export type OperationFn = (...args: any[]) => string | string[];
/**
 * A function that returns a normal SQL statement or an array of SQL statements.
 *
 * The array is useful for operations that need to return multiple SQL statements like an additional `COMMENT`.
 *
 * The `reverse` property is a function that takes the same arguments and try to infer the reverse SQL statement with that.
 */
export type Operation = OperationFn & {
    /**
     * Reverse the operation if provided.
     */
    reverse?: OperationFn;
};
/**
 * A function that returns a normal SQL statement or an array of SQL statements.
 *
 * The array is useful for operations that need to return multiple SQL statements like an additional `COMMENT`.
 *
 * The `reverse` property is a function that takes the same arguments and try to infer the reverse SQL statement with that.
 */
export type Reversible<TFunction extends (...args: any[]) => string | string[]> = TFunction & {
    /**
     * Reverse the operation.
     *
     * Needs to be the same function definition, because it takes the same
     * arguments and try to infer the reverse SQL statement with that.
     */
    reverse: TFunction;
};