export declare function normalize(text: string): string;
export declare function undent(code: string): string;
export declare function repeat(n: number, s: string): string;
export declare function trimNewlines(s: string): string;
export declare function trimLeadingNewlines(s: string): string;
export declare function trimTrailingNewlines(s: string): string;
export declare function replaceTabs(text: string, glyph: string): string;
export declare function indent(depth: number, text: string): string;
export declare function wrap(columns: number, text: string): string;
export declare function isString(x: any): x is string;
export declare function pipe(text: string, fns: ((s: string) => string)[]): string;