export declare class UnsafeMigrationException extends Error {
    constructor(statement: string);
}
export declare function checkForDrop(s: string): boolean;
export declare class Statements {
    safe: boolean;
    array: string[];
    constructor(...args: Array<string | string[]>);
    [Symbol.iterator](): ArrayIterator<string>;
    /** Use this to reorder statements. The score function receives the statement, the original index and the full statement array (like `.map`). */
    sortBy(fn: (statement: string, index: number, array: string[]) => string | number): void;
    toJSON(): string[];
    concat(other: Statements | string[]): Statements;
    get length(): number;
    join(separator: string): string;
    some(callback: (value: string, index: number, array: string[]) => unknown): boolean;
    push(...items: string[]): number;
    append(s: string): this;
    get sql(): string;
    raiseIfUnsafe(): void;
    add(other: string[] | Statements): this;
}