/**
 * `window.open` can execute arbitrary JavaScript if passed an argument with the `javascript` protocol.
 * This function validates the protocol before invoking `window.open`.
 *
 * @remarks This function should be used over `window.open`.
 *
 * @param url - Target url to open.
 *
 * @internal
 */
export declare function safeWindowOpen(url: string): void;
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