/**
 * URL utility helpers shared across audio facade classes.
 *
 * Uses a simple character-by-character loop rather than a regex so that
 * CodeQL (javascript/polynomial-redos) does not flag calls on
 * user-controlled input. The `/\/+$/` regex is equivalent in behaviour but
 * triggers the "polynomial regular expression used on uncontrolled data" rule
 * because the quantifier runs over external input.
 */
/**
 * Remove one or more trailing forward-slash characters from `url`.
 *
 * @example
 * stripTrailingSlashes("https://api.octomil.com///") // "https://api.octomil.com"
 * stripTrailingSlashes("https://api.octomil.com")    // "https://api.octomil.com"
 */
export declare function stripTrailingSlashes(url: string): string;
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