/**
 * Determines if the input should show the placeholder. If anything is in
 * in the root the placeholder should not be shown.
 * @param isComposing - Is the editor in composition mode due to an active Input Method Editor?
 * @returns true if the input should show the placeholder, false otherwise.
 */
export declare function $canShowPlaceholder(isComposing: boolean): boolean;
/**
 * Returns a function that executes {@link $canShowPlaceholder}
 * @param isEditorComposing - Is the editor in composition mode due to an active Input Method Editor?
 * @returns A function that executes $canShowPlaceholder with arguments.
 */
export declare function $canShowPlaceholderCurry(isEditorComposing: boolean): () => boolean;