import { type ToolContext, type ToolDef } from "../types.js";
/**
 * The environment variables flattening every registered editor into one, right
 * now.
 *
 * `collapsingEnvWarnings` is answered from the session set, and the session set
 * is not fixed. index.ts computes it once over the projects named on the
 * command line, where the list is empty by design at one editor - and
 * `add_editor` is the only runtime path to a second one, so a server that
 * started single and grew had asked the question exactly once, at the moment
 * the answer was guaranteed to be "nothing to say".
 *
 * Asking again wherever the set is read or changed is the fix. Undefined
 * rather than an empty array when there is nothing to report, so a
 * single-editor response is byte-identical to what it always was.
 */
export declare function envWarningsFor(ctx: ToolContext): string[] | undefined;
export declare const projectTool: ToolDef;