/**
 * A component's native `#private` fields, for the inspector's Private
 * section. A real `#private` field can't be read from outside its class, but
 * under the dev server the plugin's private-fields rewrite
 * (`../../plugins/private-fields.ts`) keys each one by
 * `Symbol.for('@oddsquad/vite-plugin-lit#private:<file>:<class>#<name>')`
 * instead, so an instance's private fields are own symbol-keyed properties.
 * Without the rewrite there are none, and nothing is shown.
 *
 * A field of a string, number or boolean can be set from the panel, as an
 * override (see `prop-overrides.ts`) named by the symbol's description: the
 * short name is not enough, as a base class and a subclass may both declare
 * `#x`.
 */
import { type InspectorPrivateField } from '../../../types/inspector.js';
/** A private field the rewrite made: its name and the class that declared it. */
interface PrivateKey {
    name: string;
    classKey: string;
}
/**
 * The private field `key` stands for, or `undefined` for any other symbol.
 * The name is what follows the last `#`; the class is between it and the
 * `:` before it.
 */
export declare const privateKeyOf: (key: symbol) => PrivateKey | undefined;
type Primitive = string | number | boolean;
/** The element's `#private` fields, serialized for the details pane. */
export declare const collectPrivateFields: (el: Element) => InspectorPrivateField[];
/**
 * Answer a `set-prop` command for the private field `key` (a symbol
 * description, see {@link InspectorPrivateField.key}): override it with
 * `value`, then ask the element to update, as Lit does not watch private
 * fields. Only a field the element already holds as its own, whose value is
 * a primitive of the same type, is written: a command can neither add a
 * field nor change one's type. Returns whether it was applied.
 */
export declare const setPrivateField: (el: Element, key: string, value: Primitive) => boolean;
/**
 * The live value of the private field shown as `name`, or `undefined` when
 * there is none.
 */
export declare const privateValue: (el: Element, name: string) => {
    value: unknown;
} | undefined;
export {};
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