/**
 * A no-operation function that executes an optional callback.
 *
 * This is a lower-level utility function. For preventing tree-shaking of custom elements,
 * prefer using {@link avoidTreeShaking} which provides a more explicit API.
 *
 * @param callback - An optional function to execute for its side effects.
 * @public
 */
export declare const noop: (fn?: () => void) => void;
/**
 * Explicitly prevents tree-shaking of custom element classes by referencing them.
 *
 * Bundlers may incorrectly remove code that it thinks has no side effects,
 * such as custom element definitions that are only referenced in templates.
 * By passing these classes to `avoidTreeShaking`, we create a side effect
 * that signals to the bundler to preserve the code.
 *
 * @param classes - One or more custom element classes that should not be tree-shaken.
 * @public
 */
export declare const avoidTreeShaking: (...classes: unknown[]) => void;
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