/**
 * Read-only, never-throwing reads of a live element's state, shared by the
 * inspector and the timeline. They run in the inspected page on objects from
 * libraries this package does not import, so everything is duck-typed, and a
 * getter on an object we do not recognise is never invoked.
 */
export type Dict = Record<string, unknown>;
export declare const isObject: (v: unknown) => v is Dict;
export declare const clip: (s: string) => string;
export declare const ctorName: (v: object) => string;
/**
 * `obj[key]` only when it is a data property on `obj` or its prototype chain.
 * A getter on an object we do not recognise may compute or have side effects,
 * so it is treated as absent.
 */
export declare const dataProp: (obj: object, key: string) => {
    value: unknown;
} | undefined;
export declare const hasFn: (v: Dict, key: string) => boolean;
/**
 * Lit keeps its controllers in a private `Set`: `__controllers` in the
 * development build, `_$EO` in the minified production build. There is no
 * public accessor, so a build that renames it again yields no controllers.
 */
export declare const controllersOf: (el: Element) => object[];
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