/**
 * @typedef {Object} CompressNode
 * @property {string} text             the symbol's source text (a chunk body)
 * @property {string} [format]         "py" | "js" | "ts" | … — needed for `signature`/`drop` extraction
 * @property {string|null} [symbol]    the chunk's symbol name, used for the `drop` marker when present
 */
/**
 * Render a node at the given fidelity. `signature` and `drop` need a parseable `format`; when a node
 * can't be parsed (markdown, a preamble chunk, a parse failure) `signature` falls back to verbatim
 * text — never throws, never returns less than the body asked for losslessly.
 * @param {CompressNode} node
 * @param {{ level?: "verbatim" | "signature" | "drop" }} [opts]
 * @returns {Promise<string>}
 * @category CE
 * @when Render a code/doc unit at a chosen fidelity (verbatim / signature-only / dropped) to fit a budget.
 * @fails Never throws; an unparseable node (markdown, preamble, parse failure) falls back to verbatim rather than losing content.
 * @signature compress(node: CompressNode, opts?: { level? }) => Promise<string>
 * @example
 * import { compress } from 'litectx'
 * const sig = await compress({ text: fnSource, format: 'js', symbol: 'parseConfig' }, { level: 'signature' })
 */
export function compress(node: CompressNode, opts?: {
    level?: "verbatim" | "signature" | "drop";
}): Promise<string>;
/** The render fidelities, most → least detail. @type {readonly string[]} */
export const COMPRESS_LEVELS: readonly string[];
export type CompressNode = {
    /**
     * the symbol's source text (a chunk body)
     */
    text: string;
    /**
     * "py" | "js" | "ts" | … — needed for `signature`/`drop` extraction
     */
    format?: string | undefined;
    /**
     * the chunk's symbol name, used for the `drop` marker when present
     */
    symbol?: string | null | undefined;
};