/**
 * Replaces all spaces with the Unicode No-break space.
 * ref: http://www.fileformat.info/info/unicode/char/a0/index.htm
 *
 * IE would otherwise collapse all spaces into one. This is useful
 * e.g. in tests when you want to compare the actual DOM text content
 * without having to add the unicode character in the place of all spaces.
 */
export declare function sanitize(text: string): string;